diff --git a/app/src/main/java/org/oppia/android/app/resumelesson/ResumeLessonActivity.kt b/app/src/main/java/org/oppia/android/app/resumelesson/ResumeLessonActivity.kt
index 9ffbd1969e3..18fd3178e31 100644
--- a/app/src/main/java/org/oppia/android/app/resumelesson/ResumeLessonActivity.kt
+++ b/app/src/main/java/org/oppia/android/app/resumelesson/ResumeLessonActivity.kt
@@ -9,8 +9,10 @@ import org.oppia.android.app.home.RouteToExplorationListener
 import org.oppia.android.app.model.ExplorationActivityParams
 import org.oppia.android.app.model.ExplorationCheckpoint
 import org.oppia.android.app.model.ProfileId
+import org.oppia.android.app.model.ReadingTextSize
 import org.oppia.android.app.model.ResumeLessonActivityParams
 import org.oppia.android.app.model.ScreenName.RESUME_LESSON_ACTIVITY
+import org.oppia.android.app.player.exploration.DefaultFontSizeStateListener
 import org.oppia.android.app.player.exploration.ExplorationActivity
 import org.oppia.android.util.extensions.getProtoExtra
 import org.oppia.android.util.extensions.putProtoExtra
@@ -20,6 +22,7 @@ import javax.inject.Inject
 /** Activity that allows the user to resume a saved exploration. */
 class ResumeLessonActivity :
   InjectableAutoLocalizedAppCompatActivity(),
+  DefaultFontSizeStateListener,
   RouteToExplorationListener {
   @Inject
   lateinit var resumeLessonActivityPresenter: ResumeLessonActivityPresenter
@@ -87,6 +90,7 @@ class ResumeLessonActivity :
     parentScreen: ExplorationActivityParams.ParentScreen,
     isCheckpointingEnabled: Boolean
   ) {
+    resumeLessonActivityPresenter.setReadingTextSizeNormal()
     startActivity(
       ExplorationActivity.createExplorationActivityIntent(
         this,
@@ -100,4 +104,13 @@ class ResumeLessonActivity :
     )
     finish()
   }
+
+  override fun onDefaultFontSizeLoaded(readingTextSize: ReadingTextSize) {
+    resumeLessonActivityPresenter.loadResumeLessonFragment(readingTextSize)
+  }
+
+  override fun onBackPressed() {
+    resumeLessonActivityPresenter.setReadingTextSizeNormal()
+    finish()
+  }
 }
diff --git a/app/src/main/java/org/oppia/android/app/resumelesson/ResumeLessonActivityPresenter.kt b/app/src/main/java/org/oppia/android/app/resumelesson/ResumeLessonActivityPresenter.kt
index e6cbc39c507..104a119e820 100644
--- a/app/src/main/java/org/oppia/android/app/resumelesson/ResumeLessonActivityPresenter.kt
+++ b/app/src/main/java/org/oppia/android/app/resumelesson/ResumeLessonActivityPresenter.kt
@@ -2,19 +2,40 @@ package org.oppia.android.app.resumelesson
 
 import androidx.appcompat.app.AppCompatActivity
 import androidx.databinding.DataBindingUtil
+import androidx.fragment.app.Fragment
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.Transformations
 import org.oppia.android.R
 import org.oppia.android.app.model.ExplorationActivityParams
 import org.oppia.android.app.model.ExplorationCheckpoint
+import org.oppia.android.app.model.Profile
 import org.oppia.android.app.model.ProfileId
+import org.oppia.android.app.model.ReadingTextSize
+import org.oppia.android.app.player.exploration.DefaultFontSizeStateListener
+import org.oppia.android.app.utility.FontScaleConfigurationUtil
 import org.oppia.android.databinding.ResumeLessonActivityBinding
+import org.oppia.android.domain.oppialogger.OppiaLogger
+import org.oppia.android.domain.profile.ProfileManagementController
+import org.oppia.android.util.data.AsyncResult
+import org.oppia.android.util.data.DataProviders.Companion.toLiveData
 import javax.inject.Inject
 
 private const val RESUME_LESSON_TAG = "ResumeLesson"
 
 /** The presenter for [ResumeLessonActivity]. */
 class ResumeLessonActivityPresenter @Inject constructor(
-  private val activity: AppCompatActivity
+  private val activity: AppCompatActivity,
+  private val profileManagementController: ProfileManagementController,
+  private val fontScaleConfigurationUtil: FontScaleConfigurationUtil,
+  private val oppiaLogger: OppiaLogger
 ) {
+  private lateinit var profileId: ProfileId
+
+  private lateinit var topicId: String
+  private lateinit var storyId: String
+  private lateinit var explorationId: String
+  private lateinit var parentScreen: ExplorationActivityParams.ParentScreen
+  private lateinit var explorationCheckpoint: ExplorationCheckpoint
 
   /** Handles onCreate() method of the [ResumeLessonActivity]. */
   fun handleOnCreate(
@@ -29,29 +50,82 @@ class ResumeLessonActivityPresenter @Inject constructor(
       activity,
       R.layout.resume_lesson_activity
     )
+    this.profileId = profileId
+    this.topicId = topicId
+    this.storyId = storyId
+    this.explorationId = explorationId
+    this.explorationCheckpoint = explorationCheckpoint
+    this.parentScreen = parentScreen
     val resumeLessonToolbar = binding.resumeLessonActivityToolbar
     activity.setSupportActionBar(resumeLessonToolbar)
 
+    retrieveReadingTextSize().observe(
+      activity as ResumeLessonActivity,
+      { result ->
+        (activity as DefaultFontSizeStateListener).onDefaultFontSizeLoaded(result)
+      }
+    )
+
     resumeLessonToolbar.setNavigationOnClickListener {
+      fontScaleConfigurationUtil.adjustFontScale(
+        context = activity,
+        ReadingTextSize.MEDIUM_TEXT_SIZE
+      )
       @Suppress("DEPRECATION") // TODO(#5404): Migrate to a back pressed dispatcher.
       activity.onBackPressed()
     }
+  }
 
-    if (getResumeLessonFragment() == null) {
-      val resumeLessonFragment = ResumeLessonFragment.newInstance(
-        profileId,
-        topicId,
-        storyId,
-        explorationId,
-        parentScreen,
-        explorationCheckpoint
-      )
-      activity.supportFragmentManager.beginTransaction().add(
-        R.id.resume_lesson_fragment_placeholder,
-        resumeLessonFragment,
-        RESUME_LESSON_TAG
-      ).commitNow()
-    }
+  /** Loads [ResumeLessonFragment]. */
+  fun loadResumeLessonFragment(readingTextSize: ReadingTextSize) {
+    if (getResumeLessonFragment() != null)
+      activity.supportFragmentManager.beginTransaction()
+        .remove(getResumeLessonFragment() as Fragment).commitNow()
+
+    val resumeLessonFragment = ResumeLessonFragment.newInstance(
+      profileId,
+      topicId,
+      storyId,
+      explorationId,
+      parentScreen,
+      explorationCheckpoint,
+      readingTextSize
+    )
+    activity.supportFragmentManager.beginTransaction().add(
+      R.id.resume_lesson_fragment_placeholder,
+      resumeLessonFragment,
+      RESUME_LESSON_TAG
+    ).commitNow()
+  }
+
+  private fun retrieveReadingTextSize(): LiveData<ReadingTextSize> {
+    return Transformations.map(
+      profileManagementController.getProfile(profileId).toLiveData(),
+      ::processReadingTextSizeResult
+    )
+  }
+
+  private fun processReadingTextSizeResult(
+    profileResult: AsyncResult<Profile>
+  ): ReadingTextSize {
+    return when (profileResult) {
+      is AsyncResult.Failure -> {
+        oppiaLogger.e(
+          "ResumeLessonActivity",
+          "Failed to retrieve profile",
+          profileResult.error
+        )
+        Profile.getDefaultInstance()
+      }
+      is AsyncResult.Pending -> {
+        oppiaLogger.d(
+          "ResumeLessonActivity",
+          "Result is pending"
+        )
+        Profile.getDefaultInstance()
+      }
+      is AsyncResult.Success -> profileResult.value
+    }.readingTextSize
   }
 
   private fun getResumeLessonFragment(): ResumeLessonFragment? {
@@ -61,4 +135,12 @@ class ResumeLessonActivityPresenter @Inject constructor(
         R.id.resume_lesson_fragment_placeholder
       ) as ResumeLessonFragment?
   }
+
+  /** Set reading text size normal. */
+  fun setReadingTextSizeNormal() {
+    fontScaleConfigurationUtil.adjustFontScale(
+      context = activity,
+      ReadingTextSize.MEDIUM_TEXT_SIZE
+    )
+  }
 }
diff --git a/app/src/main/java/org/oppia/android/app/resumelesson/ResumeLessonFragment.kt b/app/src/main/java/org/oppia/android/app/resumelesson/ResumeLessonFragment.kt
index 10a05914af6..df371344331 100644
--- a/app/src/main/java/org/oppia/android/app/resumelesson/ResumeLessonFragment.kt
+++ b/app/src/main/java/org/oppia/android/app/resumelesson/ResumeLessonFragment.kt
@@ -10,6 +10,7 @@ import org.oppia.android.app.fragment.InjectableFragment
 import org.oppia.android.app.model.ExplorationActivityParams
 import org.oppia.android.app.model.ExplorationCheckpoint
 import org.oppia.android.app.model.ProfileId
+import org.oppia.android.app.model.ReadingTextSize
 import org.oppia.android.app.model.ResumeLessonFragmentArguments
 import org.oppia.android.util.extensions.getProto
 import org.oppia.android.util.extensions.putProto
@@ -18,7 +19,9 @@ import javax.inject.Inject
 /** Fragment that allows the user to resume a saved exploration. */
 class ResumeLessonFragment : InjectableFragment() {
   companion object {
-    private const val ARGUMENTS_KEY = "ResumeExplorationFragment.arguments"
+
+    /** Arguments key for [ResumeLessonFragment]. */
+    const val ARGUMENTS_KEY = "ResumeExplorationFragment.arguments"
 
     /** Creates new instance of [ResumeLessonFragment] for the provided parameters. */
     fun newInstance(
@@ -27,7 +30,8 @@ class ResumeLessonFragment : InjectableFragment() {
       storyId: String,
       explorationId: String,
       parentScreen: ExplorationActivityParams.ParentScreen,
-      checkpoint: ExplorationCheckpoint
+      checkpoint: ExplorationCheckpoint,
+      readingTextSize: ReadingTextSize
     ): ResumeLessonFragment {
       val args = ResumeLessonFragmentArguments.newBuilder().apply {
         this.profileId = profileId
@@ -36,6 +40,7 @@ class ResumeLessonFragment : InjectableFragment() {
         this.explorationId = explorationId
         this.parentScreen = parentScreen
         this.checkpoint = checkpoint
+        this.readingTextSize = readingTextSize
       }.build()
       return ResumeLessonFragment().apply {
         arguments = Bundle().apply {
@@ -51,6 +56,7 @@ class ResumeLessonFragment : InjectableFragment() {
   override fun onAttach(context: Context) {
     super.onAttach(context)
     (fragmentComponent as FragmentComponentImpl).inject(this)
+    resumeLessonFragmentPresenter.handleAttach(context)
   }
 
   override fun onCreateView(
diff --git a/app/src/main/java/org/oppia/android/app/resumelesson/ResumeLessonFragmentPresenter.kt b/app/src/main/java/org/oppia/android/app/resumelesson/ResumeLessonFragmentPresenter.kt
index b3775e5607f..c03b5db684e 100644
--- a/app/src/main/java/org/oppia/android/app/resumelesson/ResumeLessonFragmentPresenter.kt
+++ b/app/src/main/java/org/oppia/android/app/resumelesson/ResumeLessonFragmentPresenter.kt
@@ -1,5 +1,6 @@
 package org.oppia.android.app.resumelesson
 
+import android.content.Context
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
@@ -12,7 +13,9 @@ import org.oppia.android.app.model.EphemeralChapterSummary
 import org.oppia.android.app.model.ExplorationActivityParams
 import org.oppia.android.app.model.ExplorationCheckpoint
 import org.oppia.android.app.model.ProfileId
+import org.oppia.android.app.model.ResumeLessonFragmentArguments
 import org.oppia.android.app.translation.AppLanguageResourceHandler
+import org.oppia.android.app.utility.FontScaleConfigurationUtil
 import org.oppia.android.databinding.ResumeLessonFragmentBinding
 import org.oppia.android.domain.exploration.ExplorationDataController
 import org.oppia.android.domain.oppialogger.OppiaLogger
@@ -20,6 +23,7 @@ import org.oppia.android.domain.topic.TopicController
 import org.oppia.android.domain.translation.TranslationController
 import org.oppia.android.util.data.AsyncResult
 import org.oppia.android.util.data.DataProviders.Companion.toLiveData
+import org.oppia.android.util.extensions.getProto
 import org.oppia.android.util.gcsresource.DefaultResourceBucketName
 import org.oppia.android.util.parser.html.HtmlParser
 import javax.inject.Inject
@@ -31,6 +35,7 @@ class ResumeLessonFragmentPresenter @Inject constructor(
   private val resumeLessonViewModel: ResumeLessonViewModel,
   private val topicController: TopicController,
   private val explorationDataController: ExplorationDataController,
+  private val fontScaleConfigurationUtil: FontScaleConfigurationUtil,
   private val htmlParserFactory: HtmlParser.Factory,
   private val translationController: TranslationController,
   @DefaultResourceBucketName private val resourceBucketName: String,
@@ -54,6 +59,11 @@ class ResumeLessonFragmentPresenter @Inject constructor(
     getChapterSummary()
   }
 
+  /** Handles the [Fragment.onAttach] portion of [ResumeLessonFragment]'s lifecycle. */
+  fun handleAttach(context: Context) {
+    fontScaleConfigurationUtil.adjustFontScale(context, retrieveArguments().readingTextSize)
+  }
+
   /** Handles onCreateView() method of the [ResumeLessonFragment]. */
   fun handleOnCreate(
     inflater: LayoutInflater,
@@ -70,7 +80,6 @@ class ResumeLessonFragmentPresenter @Inject constructor(
       container,
       /* attachToRoot= */ false
     )
-
     this.profileId = profileId
     this.topicId = topicId
     this.storyId = storyId
@@ -105,10 +114,15 @@ class ResumeLessonFragmentPresenter @Inject constructor(
         parentScreen
       )
     }
-
     return binding.root
   }
 
+  private fun retrieveArguments(): ResumeLessonFragmentArguments {
+    return fragment.requireArguments().getProto(
+      ResumeLessonFragment.ARGUMENTS_KEY, ResumeLessonFragmentArguments.getDefaultInstance()
+    )
+  }
+
   private fun subscribeToChapterSummary() {
     chapterSummaryLiveData.observe(
       fragment,
diff --git a/app/src/main/java/org/oppia/android/app/topic/questionplayer/QuestionPlayerActivity.kt b/app/src/main/java/org/oppia/android/app/topic/questionplayer/QuestionPlayerActivity.kt
index 1f4a1c57e74..70239733952 100644
--- a/app/src/main/java/org/oppia/android/app/topic/questionplayer/QuestionPlayerActivity.kt
+++ b/app/src/main/java/org/oppia/android/app/topic/questionplayer/QuestionPlayerActivity.kt
@@ -11,9 +11,11 @@ import org.oppia.android.app.hintsandsolution.RevealSolutionInterface
 import org.oppia.android.app.model.HelpIndex
 import org.oppia.android.app.model.ProfileId
 import org.oppia.android.app.model.QuestionPlayerActivityParams
+import org.oppia.android.app.model.ReadingTextSize
 import org.oppia.android.app.model.ScreenName.QUESTION_PLAYER_ACTIVITY
 import org.oppia.android.app.model.State
 import org.oppia.android.app.model.WrittenTranslationContext
+import org.oppia.android.app.player.exploration.DefaultFontSizeStateListener
 import org.oppia.android.app.player.state.listener.RouteToHintsAndSolutionListener
 import org.oppia.android.app.player.state.listener.StateKeyboardButtonListener
 import org.oppia.android.app.player.stopplaying.RestartPlayingSessionListener
@@ -41,6 +43,7 @@ class QuestionPlayerActivity :
   RevealHintListener,
   RevealSolutionInterface,
   HintsAndSolutionQuestionManagerListener,
+  DefaultFontSizeStateListener,
   ConceptCardListener {
 
   @Inject
@@ -57,6 +60,7 @@ class QuestionPlayerActivity :
 
   override fun onBackPressed() {
     showStopExplorationDialogFragment()
+    questionPlayerActivityPresenter.setReadingTextSizeNormal()
   }
 
   override fun restartSession() = questionPlayerActivityPresenter.restartSession()
@@ -130,4 +134,8 @@ class QuestionPlayerActivity :
   override fun stopSession() {
     questionPlayerActivityPresenter.stopTrainingSession()
   }
+
+  override fun onDefaultFontSizeLoaded(readingTextSize: ReadingTextSize) {
+    questionPlayerActivityPresenter.loadFragments(readingTextSize)
+  }
 }
diff --git a/app/src/main/java/org/oppia/android/app/topic/questionplayer/QuestionPlayerActivityPresenter.kt b/app/src/main/java/org/oppia/android/app/topic/questionplayer/QuestionPlayerActivityPresenter.kt
index c705384c950..4eb9804a176 100644
--- a/app/src/main/java/org/oppia/android/app/topic/questionplayer/QuestionPlayerActivityPresenter.kt
+++ b/app/src/main/java/org/oppia/android/app/topic/questionplayer/QuestionPlayerActivityPresenter.kt
@@ -3,18 +3,26 @@ package org.oppia.android.app.topic.questionplayer
 import android.view.inputmethod.EditorInfo
 import androidx.appcompat.app.AppCompatActivity
 import androidx.databinding.DataBindingUtil
+import androidx.fragment.app.Fragment
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.Transformations
 import org.oppia.android.R
 import org.oppia.android.app.activity.ActivityScope
 import org.oppia.android.app.hintsandsolution.HintsAndSolutionDialogFragment
 import org.oppia.android.app.model.HelpIndex
+import org.oppia.android.app.model.Profile
 import org.oppia.android.app.model.ProfileId
 import org.oppia.android.app.model.QuestionPlayerActivityParams
+import org.oppia.android.app.model.ReadingTextSize
 import org.oppia.android.app.model.State
 import org.oppia.android.app.model.WrittenTranslationContext
+import org.oppia.android.app.player.exploration.DefaultFontSizeStateListener
 import org.oppia.android.app.player.exploration.TAG_HINTS_AND_SOLUTION_DIALOG
 import org.oppia.android.app.topic.questionplayer.QuestionPlayerActivity.Companion.QUESTION_PLAYER_ACTIVITY_PARAMS_KEY
+import org.oppia.android.app.utility.FontScaleConfigurationUtil
 import org.oppia.android.databinding.QuestionPlayerActivityBinding
 import org.oppia.android.domain.oppialogger.OppiaLogger
+import org.oppia.android.domain.profile.ProfileManagementController
 import org.oppia.android.domain.question.QuestionTrainingController
 import org.oppia.android.util.data.AsyncResult
 import org.oppia.android.util.data.DataProviders.Companion.toLiveData
@@ -29,11 +37,14 @@ private const val TAG_HINTS_AND_SOLUTION_QUESTION_MANAGER = "HINTS_AND_SOLUTION_
 class QuestionPlayerActivityPresenter @Inject constructor(
   private val activity: AppCompatActivity,
   private val questionTrainingController: QuestionTrainingController,
-  private val oppiaLogger: OppiaLogger
+  private val oppiaLogger: OppiaLogger,
+  private val profileManagementController: ProfileManagementController,
+  private val fontScaleConfigurationUtil: FontScaleConfigurationUtil
 ) {
   private lateinit var profileId: ProfileId
   private lateinit var state: State
   private lateinit var writtenTranslationContext: WrittenTranslationContext
+  private lateinit var readingTextSize: ReadingTextSize
 
   fun handleOnCreate(profileId: ProfileId) {
     this.profileId = profileId
@@ -54,14 +65,31 @@ class QuestionPlayerActivityPresenter @Inject constructor(
       activity.onBackPressed()
     }
 
+    retrieveReadingTextSize().observe(
+      activity as QuestionPlayerActivity
+    ) { result ->
+      (activity as DefaultFontSizeStateListener).onDefaultFontSizeLoaded(result)
+    }
+  }
+
+  private fun loadQuestionPlayerFragment(readingTextSize: ReadingTextSize) {
+    startTrainingSessionWithCallback {
+      activity.supportFragmentManager.beginTransaction().add(
+        R.id.question_player_fragment_placeholder,
+        QuestionPlayerFragment.newInstance(profileId, readingTextSize),
+        TAG_QUESTION_PLAYER_FRAGMENT
+      ).commitNow()
+    }
+  }
+
+  fun loadFragments(readingTextSize: ReadingTextSize) {
+    this.readingTextSize = readingTextSize
     if (getQuestionPlayerFragment() == null) {
-      startTrainingSessionWithCallback {
-        activity.supportFragmentManager.beginTransaction().add(
-          R.id.question_player_fragment_placeholder,
-          QuestionPlayerFragment.newInstance(profileId),
-          TAG_QUESTION_PLAYER_FRAGMENT
-        ).commitNow()
-      }
+      loadQuestionPlayerFragment(readingTextSize)
+    } else {
+      activity.supportFragmentManager.beginTransaction()
+        .remove(getQuestionPlayerFragment() as Fragment).commitNow()
+      loadQuestionPlayerFragment(readingTextSize)
     }
 
     if (getHintsAndSolutionExplorationManagerFragment() == null) {
@@ -72,6 +100,36 @@ class QuestionPlayerActivityPresenter @Inject constructor(
     }
   }
 
+  private fun retrieveReadingTextSize(): LiveData<ReadingTextSize> {
+    return Transformations.map(
+      profileManagementController.getProfile(profileId).toLiveData(),
+      ::processReadingTextSizeResult
+    )
+  }
+
+  private fun processReadingTextSizeResult(
+    profileResult: AsyncResult<Profile>
+  ): ReadingTextSize {
+    return when (profileResult) {
+      is AsyncResult.Failure -> {
+        oppiaLogger.e(
+          "QuestionPlayerActivity",
+          "Failed to retrieve profile",
+          profileResult.error
+        )
+        Profile.getDefaultInstance()
+      }
+      is AsyncResult.Pending -> {
+        oppiaLogger.d(
+          "QuestionPlayerActivity",
+          "Result is pending"
+        )
+        Profile.getDefaultInstance()
+      }
+      is AsyncResult.Success -> profileResult.value
+    }.readingTextSize
+  }
+
   private fun getHintsAndSolutionExplorationManagerFragment(): HintsAndSolutionQuestionManagerFragment? { // ktlint-disable max-line-length
     return activity.supportFragmentManager.findFragmentByTag(
       TAG_HINTS_AND_SOLUTION_QUESTION_MANAGER
@@ -93,7 +151,7 @@ class QuestionPlayerActivityPresenter @Inject constructor(
         // Re-add the player fragment when the new session is ready.
         activity.supportFragmentManager.beginTransaction().add(
           R.id.question_player_fragment_placeholder,
-          QuestionPlayerFragment.newInstance(profileId),
+          QuestionPlayerFragment.newInstance(profileId, readingTextSize),
           TAG_QUESTION_PLAYER_FRAGMENT
         ).commitNow()
       }
@@ -143,10 +201,12 @@ class QuestionPlayerActivityPresenter @Inject constructor(
             oppiaLogger.d("QuestionPlayerActivity", "Stopping training session")
           is AsyncResult.Failure -> {
             oppiaLogger.e("QuestionPlayerActivity", "Failed to stop training session", it.error)
+            setReadingTextSizeNormal()
             activity.finish() // Can't recover from the session failing to stop.
           }
           is AsyncResult.Success -> {
             oppiaLogger.d("QuestionPlayerActivity", "Successfully stopped training session")
+            setReadingTextSizeNormal()
             callback()
           }
         }
@@ -221,4 +281,12 @@ class QuestionPlayerActivityPresenter @Inject constructor(
       TAG_HINTS_AND_SOLUTION_DIALOG
     ) as? HintsAndSolutionDialogFragment
   }
+
+  /** Set reading text size normal. */
+  fun setReadingTextSizeNormal() {
+    fontScaleConfigurationUtil.adjustFontScale(
+      context = activity,
+      ReadingTextSize.MEDIUM_TEXT_SIZE
+    )
+  }
 }
diff --git a/app/src/main/java/org/oppia/android/app/topic/questionplayer/QuestionPlayerFragment.kt b/app/src/main/java/org/oppia/android/app/topic/questionplayer/QuestionPlayerFragment.kt
index f92e0884e3d..23cb0b8afe0 100644
--- a/app/src/main/java/org/oppia/android/app/topic/questionplayer/QuestionPlayerFragment.kt
+++ b/app/src/main/java/org/oppia/android/app/topic/questionplayer/QuestionPlayerFragment.kt
@@ -9,6 +9,8 @@ import org.oppia.android.app.fragment.FragmentComponentImpl
 import org.oppia.android.app.fragment.InjectableFragment
 import org.oppia.android.app.model.HelpIndex
 import org.oppia.android.app.model.ProfileId
+import org.oppia.android.app.model.QuestionPlayerFragmentArguments
+import org.oppia.android.app.model.ReadingTextSize
 import org.oppia.android.app.model.UserAnswer
 import org.oppia.android.app.player.state.answerhandling.InteractionAnswerErrorOrAvailabilityCheckReceiver
 import org.oppia.android.app.player.state.answerhandling.InteractionAnswerReceiver
@@ -42,6 +44,7 @@ class QuestionPlayerFragment :
   override fun onAttach(context: Context) {
     super.onAttach(context)
     (fragmentComponent as FragmentComponentImpl).inject(this)
+    questionPlayerFragmentPresenter.handleAttach(context)
   }
 
   override fun onCreateView(
@@ -52,7 +55,9 @@ class QuestionPlayerFragment :
     val args = checkNotNull(arguments) {
       "Expected arguments to be passed to QuestionPlayerFragment"
     }
-    val profileId = args.getProto(PROFILE_ID_ARGUMENT_KEY, ProfileId.getDefaultInstance())
+    val arguments =
+      args.getProto(ARGUMENTS_KEY, QuestionPlayerFragmentArguments.getDefaultInstance())
+    val profileId = arguments.profileId
     return questionPlayerFragmentPresenter.handleCreateView(inflater, container, profileId)
   }
 
@@ -96,7 +101,9 @@ class QuestionPlayerFragment :
   fun dismissConceptCard() = questionPlayerFragmentPresenter.dismissConceptCard()
 
   companion object {
-    private const val PROFILE_ID_ARGUMENT_KEY = "QuestionPlayerFragment.profile_id"
+
+    /** Arguments key for [QuestionPlayerFragment]. */
+    const val ARGUMENTS_KEY = "QuestionPlayerFragment.arguments"
 
     /**
      * Creates a new fragment to play a question session.
@@ -104,12 +111,17 @@ class QuestionPlayerFragment :
      * @param profileId the profile in which the question play session will be played
      * @return a new [QuestionPlayerFragment] to start a question play session
      */
-    fun newInstance(profileId: ProfileId): QuestionPlayerFragment {
-      return QuestionPlayerFragment().apply {
-        arguments = Bundle().apply {
-          putProto(PROFILE_ID_ARGUMENT_KEY, profileId)
+    fun newInstance(profileId: ProfileId, readingTextSize: ReadingTextSize):
+      QuestionPlayerFragment {
+        val args = QuestionPlayerFragmentArguments.newBuilder().apply {
+          this.profileId = profileId
+          this.readingTextSize = readingTextSize
+        }.build()
+        return QuestionPlayerFragment().apply {
+          arguments = Bundle().apply {
+            putProto(ARGUMENTS_KEY, args)
+          }
         }
       }
-    }
   }
 }
diff --git a/app/src/main/java/org/oppia/android/app/topic/questionplayer/QuestionPlayerFragmentPresenter.kt b/app/src/main/java/org/oppia/android/app/topic/questionplayer/QuestionPlayerFragmentPresenter.kt
index 78a978ba51c..e32c7349360 100644
--- a/app/src/main/java/org/oppia/android/app/topic/questionplayer/QuestionPlayerFragmentPresenter.kt
+++ b/app/src/main/java/org/oppia/android/app/topic/questionplayer/QuestionPlayerFragmentPresenter.kt
@@ -18,6 +18,7 @@ import org.oppia.android.app.model.EphemeralQuestion
 import org.oppia.android.app.model.EphemeralState
 import org.oppia.android.app.model.HelpIndex
 import org.oppia.android.app.model.ProfileId
+import org.oppia.android.app.model.QuestionPlayerFragmentArguments
 import org.oppia.android.app.model.State
 import org.oppia.android.app.model.UserAnswer
 import org.oppia.android.app.player.state.ConfettiConfig.MINI_CONFETTI_BURST
@@ -26,6 +27,7 @@ import org.oppia.android.app.player.state.listener.RouteToHintsAndSolutionListen
 import org.oppia.android.app.player.stopplaying.RestartPlayingSessionListener
 import org.oppia.android.app.player.stopplaying.StopStatePlayingSessionListener
 import org.oppia.android.app.topic.conceptcard.ConceptCardFragment
+import org.oppia.android.app.utility.FontScaleConfigurationUtil
 import org.oppia.android.app.utility.SplitScreenManager
 import org.oppia.android.databinding.QuestionPlayerFragmentBinding
 import org.oppia.android.domain.oppialogger.OppiaLogger
@@ -34,6 +36,7 @@ import org.oppia.android.domain.question.QuestionAssessmentProgressController
 import org.oppia.android.util.data.AsyncResult
 import org.oppia.android.util.data.DataProvider
 import org.oppia.android.util.data.DataProviders.Companion.toLiveData
+import org.oppia.android.util.extensions.getProto
 import org.oppia.android.util.gcsresource.QuestionResourceBucketName
 import javax.inject.Inject
 
@@ -48,7 +51,8 @@ class QuestionPlayerFragmentPresenter @Inject constructor(
   private val analyticsController: AnalyticsController,
   @QuestionResourceBucketName private val resourceBucketName: String,
   private val assemblerBuilderFactory: StatePlayerRecyclerViewAssembler.Builder.Factory,
-  private val splitScreenManager: SplitScreenManager
+  private val splitScreenManager: SplitScreenManager,
+  private val fontScaleConfigurationUtil: FontScaleConfigurationUtil
 ) {
   // TODO(#503): Add tests for the question player.
 
@@ -66,6 +70,11 @@ class QuestionPlayerFragmentPresenter @Inject constructor(
   private lateinit var helpIndex: HelpIndex
   private lateinit var profileId: ProfileId
 
+  /** Handles the [Fragment.onAttach] portion of [QuestionPlayerFragment]'s lifecycle. */
+  fun handleAttach(context: Context) {
+    fontScaleConfigurationUtil.adjustFontScale(context, retrieveArguments().readingTextSize)
+  }
+
   fun handleCreateView(
     inflater: LayoutInflater,
     container: ViewGroup?,
@@ -117,6 +126,12 @@ class QuestionPlayerFragmentPresenter @Inject constructor(
     ConceptCardFragment.dismissAll(fragment.childFragmentManager)
   }
 
+  private fun retrieveArguments(): QuestionPlayerFragmentArguments {
+    return fragment.requireArguments().getProto(
+      QuestionPlayerFragment.ARGUMENTS_KEY, QuestionPlayerFragmentArguments.getDefaultInstance()
+    )
+  }
+
   fun handleAnswerReadyForSubmission(answer: UserAnswer) {
     // An interaction has indicated that an answer is ready for submission.
     handleSubmitAnswer(answer)
diff --git a/app/src/main/java/org/oppia/android/app/topic/revisioncard/RevisionCardActivity.kt b/app/src/main/java/org/oppia/android/app/topic/revisioncard/RevisionCardActivity.kt
index 4f6e87509e7..0dc515a04b7 100644
--- a/app/src/main/java/org/oppia/android/app/topic/revisioncard/RevisionCardActivity.kt
+++ b/app/src/main/java/org/oppia/android/app/topic/revisioncard/RevisionCardActivity.kt
@@ -6,9 +6,11 @@ import android.os.Bundle
 import org.oppia.android.app.activity.ActivityComponentImpl
 import org.oppia.android.app.activity.InjectableAutoLocalizedAppCompatActivity
 import org.oppia.android.app.model.ProfileId
+import org.oppia.android.app.model.ReadingTextSize
 import org.oppia.android.app.model.RevisionCardActivityParams
 import org.oppia.android.app.model.ScreenName.REVISION_CARD_ACTIVITY
 import org.oppia.android.app.player.exploration.BottomSheetOptionsMenuItemClickListener
+import org.oppia.android.app.player.exploration.DefaultFontSizeStateListener
 import org.oppia.android.app.topic.RouteToRevisionCardListener
 import org.oppia.android.app.topic.conceptcard.ConceptCardListener
 import org.oppia.android.util.extensions.getProtoExtra
@@ -24,6 +26,7 @@ class RevisionCardActivity :
   ReturnToTopicClickListener,
   ConceptCardListener,
   RouteToRevisionCardListener,
+  DefaultFontSizeStateListener,
   BottomSheetOptionsMenuItemClickListener {
 
   @Inject
@@ -112,7 +115,13 @@ class RevisionCardActivity :
     revisionCardActivityPresenter.dismissConceptCard()
   }
 
+  @Deprecated("Deprecated in Java")
   override fun onBackPressed() {
+    revisionCardActivityPresenter.setReadingTextSizeMedium()
     onReturnToTopicRequested()
   }
+
+  override fun onDefaultFontSizeLoaded(readingTextSize: ReadingTextSize) {
+    revisionCardActivityPresenter.loadRevisionCardFragment(readingTextSize)
+  }
 }
diff --git a/app/src/main/java/org/oppia/android/app/topic/revisioncard/RevisionCardActivityPresenter.kt b/app/src/main/java/org/oppia/android/app/topic/revisioncard/RevisionCardActivityPresenter.kt
index 1d1036c3ef0..a6873bfd685 100644
--- a/app/src/main/java/org/oppia/android/app/topic/revisioncard/RevisionCardActivityPresenter.kt
+++ b/app/src/main/java/org/oppia/android/app/topic/revisioncard/RevisionCardActivityPresenter.kt
@@ -4,18 +4,24 @@ import android.widget.TextView
 import androidx.appcompat.app.AppCompatActivity
 import androidx.appcompat.widget.Toolbar
 import androidx.databinding.DataBindingUtil
+import androidx.fragment.app.Fragment
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.Transformations
 import org.oppia.android.R
 import org.oppia.android.app.activity.ActivityScope
 import org.oppia.android.app.help.HelpActivity
 import org.oppia.android.app.model.EphemeralRevisionCard
+import org.oppia.android.app.model.Profile
 import org.oppia.android.app.model.ProfileId
+import org.oppia.android.app.model.ReadingTextSize
 import org.oppia.android.app.options.OptionsActivity
 import org.oppia.android.app.player.exploration.BottomSheetOptionsMenu
+import org.oppia.android.app.player.exploration.DefaultFontSizeStateListener
+import org.oppia.android.app.utility.FontScaleConfigurationUtil
 import org.oppia.android.databinding.RevisionCardActivityBinding
 import org.oppia.android.domain.oppialogger.OppiaLogger
 import org.oppia.android.domain.oppialogger.analytics.AnalyticsController
+import org.oppia.android.domain.profile.ProfileManagementController
 import org.oppia.android.domain.topic.TopicController
 import org.oppia.android.domain.translation.TranslationController
 import org.oppia.android.util.accessibility.AccessibilityService
@@ -24,13 +30,16 @@ import org.oppia.android.util.data.DataProviders.Companion.toLiveData
 import javax.inject.Inject
 
 /** The presenter for [RevisionCardActivity]. */
+@Suppress("DEPRECATION")
 @ActivityScope
 class RevisionCardActivityPresenter @Inject constructor(
   private val activity: AppCompatActivity,
   private val oppiaLogger: OppiaLogger,
   private val analyticsController: AnalyticsController,
   private val topicController: TopicController,
-  private val translationController: TranslationController
+  private val translationController: TranslationController,
+  private val profileManagementController: ProfileManagementController,
+  private val fontScaleConfigurationUtil: FontScaleConfigurationUtil,
 ) {
   @Inject lateinit var accessibilityService: AccessibilityService
 
@@ -40,6 +49,7 @@ class RevisionCardActivityPresenter @Inject constructor(
   private lateinit var profileId: ProfileId
   private lateinit var topicId: String
   private var subtopicId: Int = 0
+  private var subtopicListSize: Int = 0
 
   fun handleOnCreate(
     internalProfileId: Int,
@@ -54,11 +64,18 @@ class RevisionCardActivityPresenter @Inject constructor(
     profileId = ProfileId.newBuilder().setInternalId(internalProfileId).build()
     this.topicId = topicId
     this.subtopicId = subtopicId
+    this.subtopicListSize = subtopicListSize
 
     binding.apply {
       lifecycleOwner = activity
     }
 
+    retrieveReadingTextSize().observe(
+      activity
+    ) { result ->
+      (activity as DefaultFontSizeStateListener).onDefaultFontSizeLoaded(result)
+    }
+
     revisionCardToolbar = binding.revisionCardToolbar
     revisionCardToolbarTitle = binding.revisionCardToolbarTitle
     activity.setSupportActionBar(revisionCardToolbar)
@@ -66,6 +83,8 @@ class RevisionCardActivityPresenter @Inject constructor(
 
     binding.revisionCardToolbar.setNavigationOnClickListener {
       (activity as ReturnToTopicClickListener).onReturnToTopicRequested()
+      fontScaleConfigurationUtil.adjustFontScale(activity, ReadingTextSize.MEDIUM_TEXT_SIZE)
+      activity.onBackPressed()
     }
     if (!accessibilityService.isScreenReaderEnabled()) {
       binding.revisionCardToolbarTitle.setOnClickListener {
@@ -79,17 +98,41 @@ class RevisionCardActivityPresenter @Inject constructor(
       val bottomSheetOptionsMenu = BottomSheetOptionsMenu()
       bottomSheetOptionsMenu.showNow(activity.supportFragmentManager, bottomSheetOptionsMenu.tag)
     }
+  }
 
-    if (getReviewCardFragment() == null) {
-      activity.supportFragmentManager.beginTransaction().add(
-        R.id.revision_card_fragment_placeholder,
-        RevisionCardFragment.newInstance(topicId, subtopicId, profileId, subtopicListSize)
-      ).commitNow()
-    }
+  private fun retrieveReadingTextSize(): LiveData<ReadingTextSize> {
+    return Transformations.map(
+      profileManagementController.getProfile(profileId).toLiveData(),
+      ::processReadingTextSizeResult
+    )
+  }
+
+  private fun processReadingTextSizeResult(
+    profileResult: AsyncResult<Profile>
+  ): ReadingTextSize {
+    return when (profileResult) {
+      is AsyncResult.Failure -> {
+        oppiaLogger.e(
+          "RevisionCardActivity",
+          "Failed to retrieve profile",
+          profileResult.error
+        )
+        Profile.getDefaultInstance()
+      }
+      is AsyncResult.Pending -> {
+        oppiaLogger.d(
+          "RevisionCardActivity",
+          "Result is pending"
+        )
+        Profile.getDefaultInstance()
+      }
+      is AsyncResult.Success -> profileResult.value
+    }.readingTextSize
   }
 
   /** Action for onOptionsItemSelected. */
   fun handleOnOptionsItemSelected(itemId: Int): Boolean {
+    setReadingTextSizeMedium()
     return when (itemId) {
       R.id.action_options -> {
         val intent = OptionsActivity.createOptionsActivity(
@@ -172,4 +215,25 @@ class RevisionCardActivityPresenter @Inject constructor(
         R.id.revision_card_fragment_placeholder
       ) as RevisionCardFragment?
   }
+
+  fun loadRevisionCardFragment(readingTextSize: ReadingTextSize) {
+    if (getReviewCardFragment() != null)
+      activity.supportFragmentManager.beginTransaction()
+        .remove(getReviewCardFragment() as Fragment).commitNow()
+
+    activity.supportFragmentManager.beginTransaction().add(
+      R.id.revision_card_fragment_placeholder,
+      RevisionCardFragment.newInstance(
+        topicId,
+        subtopicId,
+        profileId,
+        subtopicListSize,
+        readingTextSize
+      )
+    ).commitNow()
+  }
+
+  fun setReadingTextSizeMedium() {
+    fontScaleConfigurationUtil.adjustFontScale(activity, ReadingTextSize.MEDIUM_TEXT_SIZE)
+  }
 }
diff --git a/app/src/main/java/org/oppia/android/app/topic/revisioncard/RevisionCardFragment.kt b/app/src/main/java/org/oppia/android/app/topic/revisioncard/RevisionCardFragment.kt
index 303c9c04478..54716b5db25 100755
--- a/app/src/main/java/org/oppia/android/app/topic/revisioncard/RevisionCardFragment.kt
+++ b/app/src/main/java/org/oppia/android/app/topic/revisioncard/RevisionCardFragment.kt
@@ -8,6 +8,7 @@ import android.view.ViewGroup
 import org.oppia.android.app.fragment.FragmentComponentImpl
 import org.oppia.android.app.fragment.InjectableDialogFragment
 import org.oppia.android.app.model.ProfileId
+import org.oppia.android.app.model.ReadingTextSize
 import org.oppia.android.app.model.RevisionCardFragmentArguments
 import org.oppia.android.util.extensions.getProto
 import org.oppia.android.util.extensions.putProto
@@ -25,12 +26,19 @@ class RevisionCardFragment : InjectableDialogFragment() {
      * Returns a new [RevisionCardFragment] to display the specific subtopic for the given topic &
      * profile.
      */
-    fun newInstance(topicId: String, subtopicId: Int, profileId: ProfileId, subtopicListSize: Int):
+    fun newInstance(
+      topicId: String,
+      subtopicId: Int,
+      profileId: ProfileId,
+      subtopicListSize: Int,
+      readingTextSize: ReadingTextSize
+    ):
       RevisionCardFragment {
         val args = RevisionCardFragmentArguments.newBuilder().apply {
           this.topicId = topicId
           this.subtopicId = subtopicId
           this.subtopicListSize = subtopicListSize
+          this.readingTextSize = readingTextSize
         }.build()
         return RevisionCardFragment().apply {
           arguments = Bundle().apply {
@@ -47,6 +55,7 @@ class RevisionCardFragment : InjectableDialogFragment() {
   override fun onAttach(context: Context) {
     super.onAttach(context)
     (fragmentComponent as FragmentComponentImpl).inject(this)
+    revisionCardFragmentPresenter.handleAttach(context)
   }
 
   override fun onCreateView(
@@ -70,12 +79,16 @@ class RevisionCardFragment : InjectableDialogFragment() {
     val subtopicId = args?.subtopicId ?: -1
     val profileId = arguments.extractCurrentUserProfileId()
     val subtopicListSize = args?.subtopicListSize ?: -1
-
     return revisionCardFragmentPresenter.handleCreateView(
       inflater, container, topicId, subtopicId, profileId, subtopicListSize
     )
   }
 
+  override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+    super.onViewCreated(view, savedInstanceState)
+    revisionCardFragmentPresenter.handleViewCreated()
+  }
+
   /** Dismisses the concept card fragment if it's currently active in this fragment. */
   fun dismissConceptCard() = revisionCardFragmentPresenter.dismissConceptCard()
 }
diff --git a/app/src/main/java/org/oppia/android/app/topic/revisioncard/RevisionCardFragmentPresenter.kt b/app/src/main/java/org/oppia/android/app/topic/revisioncard/RevisionCardFragmentPresenter.kt
index 5ac95363353..49da009045c 100755
--- a/app/src/main/java/org/oppia/android/app/topic/revisioncard/RevisionCardFragmentPresenter.kt
+++ b/app/src/main/java/org/oppia/android/app/topic/revisioncard/RevisionCardFragmentPresenter.kt
@@ -1,17 +1,26 @@
 package org.oppia.android.app.topic.revisioncard
 
+import android.content.Context
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.fragment.app.Fragment
 import org.oppia.android.app.fragment.FragmentScope
 import org.oppia.android.app.model.ProfileId
+import org.oppia.android.app.model.ReadingTextSize
+import org.oppia.android.app.model.RevisionCardFragmentArguments
 import org.oppia.android.app.topic.conceptcard.ConceptCardFragment
+import org.oppia.android.app.topic.revisioncard.RevisionCardFragment.Companion.REVISION_CARD_FRAGMENT_ARGUMENTS_KEY
 import org.oppia.android.app.translation.AppLanguageResourceHandler
+import org.oppia.android.app.utility.FontScaleConfigurationUtil
 import org.oppia.android.databinding.RevisionCardFragmentBinding
 import org.oppia.android.domain.oppialogger.OppiaLogger
 import org.oppia.android.domain.oppialogger.analytics.AnalyticsController
+import org.oppia.android.domain.profile.ProfileManagementController
 import org.oppia.android.domain.translation.TranslationController
+import org.oppia.android.util.data.AsyncResult
+import org.oppia.android.util.data.DataProviders.Companion.toLiveData
+import org.oppia.android.util.extensions.getProto
 import org.oppia.android.util.gcsresource.DefaultResourceBucketName
 import org.oppia.android.util.parser.html.HtmlParser
 import org.oppia.android.util.parser.html.TopicHtmlParserEntityType
@@ -28,10 +37,18 @@ class RevisionCardFragmentPresenter @Inject constructor(
   @TopicHtmlParserEntityType private val entityType: String,
   private val translationController: TranslationController,
   private val appLanguageResourceHandler: AppLanguageResourceHandler,
-  private val revisionCardViewModelFactory: RevisionCardViewModel.Factory
+  private val revisionCardViewModelFactory: RevisionCardViewModel.Factory,
+  private val fontScaleConfigurationUtil: FontScaleConfigurationUtil,
+  private val profileManagementController: ProfileManagementController
 ) : HtmlParser.CustomOppiaTagActionListener {
   private lateinit var profileId: ProfileId
 
+  /** Handles the [Fragment.onAttach] portion of [RevisionCardFragment]'s lifecycle. */
+  fun handleAttach(context: Context) {
+    fontScaleConfigurationUtil.adjustFontScale(context, retrieveReadingTextSize())
+  }
+
+  /** Handles the [Fragment.onCreateView] portion of [RevisionCardFragment]'s lifecycle. */
   fun handleCreateView(
     inflater: LayoutInflater,
     container: ViewGroup?,
@@ -83,6 +100,23 @@ class RevisionCardFragmentPresenter @Inject constructor(
     return binding.root
   }
 
+  /** Handles the [Fragment.onCreateView] portion of [RevisionCardFragment]'s lifecycle. */
+  fun handleViewCreated() {
+    val profileDataProvider = profileManagementController.getProfile(profileId)
+    profileDataProvider.toLiveData().observe(
+      fragment
+    ) { result ->
+      val readingTextSize = retrieveReadingTextSize()
+      if (result is AsyncResult.Success) {
+        if (result.value.readingTextSize != readingTextSize) {
+          // Since text views are based on sp for sizing, the activity needs to be recreated so that
+          // sp can be correctly recomputed.
+          fragment.requireActivity().recreate()
+        }
+      }
+    }
+  }
+
   /** Dismisses the concept card fragment if it's currently active in this fragment. */
   fun dismissConceptCard() {
     ConceptCardFragment.dismissAll(fragment.childFragmentManager)
@@ -98,4 +132,12 @@ class RevisionCardFragmentPresenter @Inject constructor(
   override fun onConceptCardLinkClicked(view: View, skillId: String) {
     ConceptCardFragment.bringToFrontOrCreateIfNew(skillId, profileId, fragment.childFragmentManager)
   }
+
+  private fun retrieveReadingTextSize(): ReadingTextSize {
+    return fragment.requireArguments()
+      .getProto(
+        REVISION_CARD_FRAGMENT_ARGUMENTS_KEY,
+        RevisionCardFragmentArguments.getDefaultInstance()
+      ).readingTextSize
+  }
 }
diff --git a/app/src/sharedTest/java/org/oppia/android/app/resumelesson/ResumeLessonFragmentTest.kt b/app/src/sharedTest/java/org/oppia/android/app/resumelesson/ResumeLessonFragmentTest.kt
index 015955e6dde..b220e95051b 100644
--- a/app/src/sharedTest/java/org/oppia/android/app/resumelesson/ResumeLessonFragmentTest.kt
+++ b/app/src/sharedTest/java/org/oppia/android/app/resumelesson/ResumeLessonFragmentTest.kt
@@ -40,10 +40,12 @@ import org.oppia.android.app.devoptions.DeveloperOptionsStarterModule
 import org.oppia.android.app.model.ExplorationActivityParams
 import org.oppia.android.app.model.ExplorationCheckpoint
 import org.oppia.android.app.model.ProfileId
+import org.oppia.android.app.model.ReadingTextSize
 import org.oppia.android.app.player.state.itemviewmodel.SplitScreenInteractionModule
 import org.oppia.android.app.shim.ViewBindingShimModule
 import org.oppia.android.app.translation.testing.ActivityRecreatorTestModule
 import org.oppia.android.app.utility.EspressoTestsMatchers.withDrawable
+import org.oppia.android.app.utility.FontSizeMatcher.Companion.withFontSize
 import org.oppia.android.app.utility.OrientationChangeAction.Companion.orientationLandscape
 import org.oppia.android.data.backends.gae.NetworkConfigProdModule
 import org.oppia.android.data.backends.gae.NetworkModule
@@ -83,8 +85,10 @@ import org.oppia.android.domain.topic.RATIOS_STORY_ID_0
 import org.oppia.android.domain.topic.RATIOS_TOPIC_ID
 import org.oppia.android.domain.workmanager.WorkManagerConfigurationModule
 import org.oppia.android.testing.OppiaTestRule
+import org.oppia.android.testing.RunOn
 import org.oppia.android.testing.TestImageLoaderModule
 import org.oppia.android.testing.TestLogReportingModule
+import org.oppia.android.testing.TestPlatform
 import org.oppia.android.testing.firebase.TestAuthenticationModule
 import org.oppia.android.testing.junit.InitializeDefaultLocaleRule
 import org.oppia.android.testing.robolectric.RobolectricModule
@@ -292,6 +296,62 @@ class ResumeLessonFragmentTest {
     )
   }
 
+  @Test @Config(qualifiers = "w360dp-h640dp-xxhdpi")
+  @RunOn(TestPlatform.ROBOLECTRIC)
+  fun testResumeLessonFragment_extraLargeTextSize_hasCorrectDimension() {
+    launch<ResumeLessonActivity>(createResumeLessonActivityIntent()).use {
+      it.onActivity { activity ->
+        activity.resumeLessonActivityPresenter
+          .loadResumeLessonFragment(ReadingTextSize.EXTRA_LARGE_TEXT_SIZE)
+      }
+      onView(withId(R.id.resume_lesson_chapter_description_text_view)).check(
+        matches(withFontSize(67F))
+      )
+    }
+  }
+
+  @Test @Config(qualifiers = "w360dp-h640dp-xxhdpi")
+  @RunOn(TestPlatform.ROBOLECTRIC)
+  fun testResumeLessonFragment_largeTextSize_hasCorrectDimension() {
+    launch<ResumeLessonActivity>(createResumeLessonActivityIntent()).use {
+      it.onActivity { activity ->
+        activity.resumeLessonActivityPresenter
+          .loadResumeLessonFragment(ReadingTextSize.LARGE_TEXT_SIZE)
+      }
+      onView(withId(R.id.resume_lesson_chapter_description_text_view)).check(
+        matches(withFontSize(58F))
+      )
+    }
+  }
+
+  @Test @Config(qualifiers = "w360dp-h640dp-xxhdpi")
+  @RunOn(TestPlatform.ROBOLECTRIC)
+  fun testResumeLessonFragment_mediumTextSize_hasCorrectDimension() {
+    launch<ResumeLessonActivity>(createResumeLessonActivityIntent()).use {
+      it.onActivity { activity ->
+        activity.resumeLessonActivityPresenter
+          .loadResumeLessonFragment(ReadingTextSize.MEDIUM_TEXT_SIZE)
+      }
+      onView(withId(R.id.resume_lesson_chapter_description_text_view)).check(
+        matches(withFontSize(48F))
+      )
+    }
+  }
+
+  @Test @Config(qualifiers = "w360dp-h640dp-xxhdpi")
+  @RunOn(TestPlatform.ROBOLECTRIC)
+  fun testResumeLessonFragment_smallTextSize_hasCorrectDimension() {
+    launch<ResumeLessonActivity>(createResumeLessonActivityIntent()).use {
+      it.onActivity { activity ->
+        activity.resumeLessonActivityPresenter
+          .loadResumeLessonFragment(ReadingTextSize.SMALL_TEXT_SIZE)
+      }
+      onView(withId(R.id.resume_lesson_chapter_description_text_view)).check(
+        matches(withFontSize(38F))
+      )
+    }
+  }
+
   // TODO(#59): Figure out a way to reuse modules instead of needing to re-declare them.
   @Singleton
   @Component(
diff --git a/app/src/sharedTest/java/org/oppia/android/app/topic/questionplayer/QuestionPlayerActivityTest.kt b/app/src/sharedTest/java/org/oppia/android/app/topic/questionplayer/QuestionPlayerActivityTest.kt
index c2aacc1d4b0..1225e4aa29a 100644
--- a/app/src/sharedTest/java/org/oppia/android/app/topic/questionplayer/QuestionPlayerActivityTest.kt
+++ b/app/src/sharedTest/java/org/oppia/android/app/topic/questionplayer/QuestionPlayerActivityTest.kt
@@ -63,6 +63,7 @@ import org.oppia.android.app.devoptions.DeveloperOptionsModule
 import org.oppia.android.app.devoptions.DeveloperOptionsStarterModule
 import org.oppia.android.app.model.OppiaLanguage
 import org.oppia.android.app.model.ProfileId
+import org.oppia.android.app.model.ReadingTextSize
 import org.oppia.android.app.model.ScreenName
 import org.oppia.android.app.model.WrittenTranslationLanguageSelection
 import org.oppia.android.app.player.state.itemviewmodel.SplitScreenInteractionModule
@@ -77,6 +78,7 @@ import org.oppia.android.app.recyclerview.RecyclerViewMatcher.Companion.atPositi
 import org.oppia.android.app.recyclerview.RecyclerViewMatcher.Companion.hasItemCount
 import org.oppia.android.app.shim.ViewBindingShimModule
 import org.oppia.android.app.translation.testing.ActivityRecreatorTestModule
+import org.oppia.android.app.utility.FontSizeMatcher
 import org.oppia.android.app.utility.OrientationChangeAction.Companion.orientationLandscape
 import org.oppia.android.data.backends.gae.NetworkConfigProdModule
 import org.oppia.android.data.backends.gae.NetworkModule
@@ -556,6 +558,73 @@ class QuestionPlayerActivityTest {
     }
   }
 
+  @Test
+  @Config(qualifiers = "w360dp-h640dp-xxhdpi")
+  @RunOn(TestPlatform.ROBOLECTRIC)
+  fun testQuestionPlayer_extraLargeTextSize_hasCorrectDimension() {
+    launchForSkillList(SKILL_ID_LIST).use {
+      it.onActivity { activity ->
+        activity.questionPlayerActivityPresenter
+          .loadFragments(ReadingTextSize.EXTRA_LARGE_TEXT_SIZE)
+      }
+      verifyFontSizeMatches(67F)
+    }
+  }
+
+  @Test
+  @Config(qualifiers = "w360dp-h640dp-xxhdpi")
+  @RunOn(TestPlatform.ROBOLECTRIC)
+  fun testQuestionPlayer_largeTextSize_hasCorrectDimension() {
+    launchForSkillList(SKILL_ID_LIST).use {
+      it.onActivity { activity ->
+        activity.questionPlayerActivityPresenter
+          .loadFragments(ReadingTextSize.LARGE_TEXT_SIZE)
+      }
+      verifyFontSizeMatches(58F)
+    }
+  }
+
+  @Test @Config(qualifiers = "w360dp-h640dp-xxhdpi")
+  @RunOn(TestPlatform.ROBOLECTRIC)
+  fun testQuestionPlayer_mediumTextSize_hasCorrectDimension() {
+    launchForSkillList(SKILL_ID_LIST).use {
+      it.onActivity { activity ->
+        activity.questionPlayerActivityPresenter
+          .loadFragments(ReadingTextSize.MEDIUM_TEXT_SIZE)
+      }
+      verifyFontSizeMatches(48F)
+    }
+  }
+
+  @Test @Config(qualifiers = "w360dp-h640dp-xxhdpi")
+  @RunOn(TestPlatform.ROBOLECTRIC)
+  fun testQuestionPlayer_smallTextSize_hasCorrectDimension() {
+    launchForSkillList(SKILL_ID_LIST).use {
+      it.onActivity { activity ->
+        activity.questionPlayerActivityPresenter
+          .loadFragments(ReadingTextSize.SMALL_TEXT_SIZE)
+      }
+      verifyFontSizeMatches(38F)
+    }
+  }
+
+  private fun verifyFontSizeMatches(fontSize: Float) {
+    scrollToViewType(CONTENT)
+    onView(
+      atPositionOnView(
+        recyclerViewId = R.id.question_recycler_view,
+        position = 0,
+        targetViewId = R.id.content_text_view
+      )
+    ).check(
+      matches(
+        FontSizeMatcher.withFontSize(
+          fontSize = fontSize
+        )
+      )
+    )
+  }
+
   private fun setUpTestApplicationComponent() {
     ApplicationProvider.getApplicationContext<TestApplication>().inject(this)
   }
diff --git a/app/src/sharedTest/java/org/oppia/android/app/topic/revisioncard/RevisionCardFragmentTest.kt b/app/src/sharedTest/java/org/oppia/android/app/topic/revisioncard/RevisionCardFragmentTest.kt
index d70c6c13791..2ace43dd119 100644
--- a/app/src/sharedTest/java/org/oppia/android/app/topic/revisioncard/RevisionCardFragmentTest.kt
+++ b/app/src/sharedTest/java/org/oppia/android/app/topic/revisioncard/RevisionCardFragmentTest.kt
@@ -59,6 +59,7 @@ import org.oppia.android.app.model.HelpActivityParams
 import org.oppia.android.app.model.OppiaLanguage
 import org.oppia.android.app.model.OptionsActivityParams
 import org.oppia.android.app.model.ProfileId
+import org.oppia.android.app.model.ReadingTextSize
 import org.oppia.android.app.model.RevisionCardActivityParams
 import org.oppia.android.app.model.WrittenTranslationLanguageSelection
 import org.oppia.android.app.options.OptionsActivity
@@ -67,6 +68,7 @@ import org.oppia.android.app.player.state.itemviewmodel.SplitScreenInteractionMo
 import org.oppia.android.app.shim.ViewBindingShimModule
 import org.oppia.android.app.topic.revisioncard.RevisionCardActivity.Companion.createRevisionCardActivityIntent
 import org.oppia.android.app.translation.testing.ActivityRecreatorTestModule
+import org.oppia.android.app.utility.FontSizeMatcher.Companion.withFontSize
 import org.oppia.android.app.utility.OrientationChangeAction.Companion.orientationLandscape
 import org.oppia.android.data.backends.gae.NetworkConfigProdModule
 import org.oppia.android.data.backends.gae.NetworkModule
@@ -232,6 +234,96 @@ class RevisionCardFragmentTest {
     }
   }
 
+  @Test @Config(qualifiers = "w360dp-h640dp-xxhdpi")
+  @RunOn(TestPlatform.ROBOLECTRIC)
+  fun testRevisionCard_extraLargeTextSize_hasCorrectDimension() {
+    launch<RevisionCardActivity>(
+      createRevisionCardActivityIntent(
+        context,
+        profileId.internalId,
+        FRACTIONS_TOPIC_ID,
+        subtopicId = 2,
+        FRACTIONS_SUBTOPIC_LIST_SIZE
+      )
+    ).use {
+      it.onActivity { activity ->
+        activity.revisionCardActivityPresenter
+          .loadRevisionCardFragment(ReadingTextSize.EXTRA_LARGE_TEXT_SIZE)
+      }
+      onView(withId(R.id.revision_card_explanation_text)).check(
+        matches(withFontSize(67F))
+      )
+    }
+  }
+
+  @Test @Config(qualifiers = "w360dp-h640dp-xxhdpi")
+  @RunOn(TestPlatform.ROBOLECTRIC)
+  fun testRevisionCard_largeTextSize_hasCorrectDimension() {
+    launch<RevisionCardActivity>(
+      createRevisionCardActivityIntent(
+        context,
+        profileId.internalId,
+        FRACTIONS_TOPIC_ID,
+        subtopicId = 2,
+        FRACTIONS_SUBTOPIC_LIST_SIZE
+      )
+    ).use {
+      it.onActivity { activity ->
+        activity.revisionCardActivityPresenter
+          .loadRevisionCardFragment(ReadingTextSize.LARGE_TEXT_SIZE)
+      }
+      onView(withId(R.id.revision_card_explanation_text)).check(
+        matches(withFontSize(58F))
+      )
+    }
+  }
+
+  @Test @Config(qualifiers = "w360dp-h640dp-xxhdpi")
+  @RunOn(TestPlatform.ROBOLECTRIC)
+  fun testRevisionCard_mediumTextSize_hasCorrectDimension() {
+    launch<RevisionCardActivity>(
+      createRevisionCardActivityIntent(
+        context,
+        profileId.internalId,
+        FRACTIONS_TOPIC_ID,
+        subtopicId = 2,
+        FRACTIONS_SUBTOPIC_LIST_SIZE
+      )
+    ).use {
+      it.onActivity { activity ->
+        activity.revisionCardActivityPresenter
+          .loadRevisionCardFragment(
+            ReadingTextSize.MEDIUM_TEXT_SIZE
+          )
+      }
+      onView(withId(R.id.revision_card_explanation_text)).check(
+        matches(withFontSize(48F))
+      )
+    }
+  }
+
+  @Test @Config(qualifiers = "w360dp-h640dp-xxhdpi")
+  @RunOn(TestPlatform.ROBOLECTRIC)
+  fun testRevisionCard_smallTextSize_hasCorrectDimension() {
+    launch<RevisionCardActivity>(
+      createRevisionCardActivityIntent(
+        context,
+        profileId.internalId,
+        FRACTIONS_TOPIC_ID,
+        subtopicId = 2,
+        FRACTIONS_SUBTOPIC_LIST_SIZE
+      )
+    ).use {
+      it.onActivity { activity ->
+        activity.revisionCardActivityPresenter
+          .loadRevisionCardFragment(ReadingTextSize.SMALL_TEXT_SIZE)
+      }
+      onView(withId(R.id.revision_card_explanation_text)).check(
+        matches(withFontSize(38F))
+      )
+    }
+  }
+
   @Test
   fun testRevisionCardTest_initialise_openBottomSheet_showsBottomSheet() {
     launch<ExplorationActivity>(
diff --git a/model/src/main/proto/arguments.proto b/model/src/main/proto/arguments.proto
index 2aca58d5e01..e42bbf09266 100644
--- a/model/src/main/proto/arguments.proto
+++ b/model/src/main/proto/arguments.proto
@@ -206,6 +206,9 @@ message ResumeLessonFragmentArguments {
 
   // The checkpoint that may be used to resume the exploration play session.
   ExplorationCheckpoint checkpoint = 6;
+
+  // The text size at which content in the resume lesson should be rendered.
+  ReadingTextSize reading_text_size = 7;
 }
 
 // Params required when creating a new ReadingTextSizeActivity.
@@ -328,6 +331,15 @@ message SurveyActivityParams {
   string exploration_id = 3;
 }
 
+// Arguments required when creating a QuestionPlayerFragment.
+message QuestionPlayerFragmentArguments{
+  // The ID of current profile.
+  ProfileId profile_id = 1;
+
+  // The ReadingTextSize previously selected by the user (upon opening the fragment).
+  ReadingTextSize reading_text_size = 2;
+}
+
 // Represents the parameters needed to create TopicActivity.
 message TopicActivityParams {
   // The ID of the topic to be loaded.
@@ -801,6 +813,9 @@ message RevisionCardFragmentArguments {
 
   // The sub topic list size.
   int32 subtopic_list_size = 3;
+
+  // The text size at which content in the resume lesson should be rendered.
+  ReadingTextSize reading_text_size = 7;
 }
 
 // Represents the parameters needed to create TestFontScaleConfigurationUtilActivity.
diff --git a/scripts/assets/kdoc_validity_exemptions.textproto b/scripts/assets/kdoc_validity_exemptions.textproto
index a41ece30e6e..c82f70cd255 100644
--- a/scripts/assets/kdoc_validity_exemptions.textproto
+++ b/scripts/assets/kdoc_validity_exemptions.textproto
@@ -250,7 +250,6 @@ exempted_file_path: "app/src/main/java/org/oppia/android/app/topic/revision/Topi
 exempted_file_path: "app/src/main/java/org/oppia/android/app/topic/revision/TopicRevisionViewModel.kt"
 exempted_file_path: "app/src/main/java/org/oppia/android/app/topic/revisioncard/RevisionCardActivityPresenter.kt"
 exempted_file_path: "app/src/main/java/org/oppia/android/app/topic/revisioncard/RevisionCardFragment.kt"
-exempted_file_path: "app/src/main/java/org/oppia/android/app/topic/revisioncard/RevisionCardFragmentPresenter.kt"
 exempted_file_path: "app/src/main/java/org/oppia/android/app/view/ViewComponentImpl.kt"
 exempted_file_path: "app/src/main/java/org/oppia/android/app/walkthrough/WalkthroughActivity.kt"
 exempted_file_path: "app/src/main/java/org/oppia/android/app/walkthrough/WalkthroughActivityPresenter.kt"