diff --git a/app/__init__.py b/app/__init__.py
index 3c581ceeb..aa86bfac1 100644
--- a/app/__init__.py
+++ b/app/__init__.py
@@ -1,22 +1,27 @@
 from flask import Flask
 from .db import db, migrate
 from .models import task, goal
+from .routes.task_routes import bp as tasks_bp
+from .routes.goal_routes import bp as goals_bp
 import os
+from dotenv import load_dotenv
+from flask_cors import CORS
 
 def create_app(config=None):
+    load_dotenv()
     app = Flask(__name__)
+    CORS(app)
 
     app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
     app.config['SQLALCHEMY_DATABASE_URI'] = os.environ.get('SQLALCHEMY_DATABASE_URI')
 
     if config:
-        # Merge `config` into the app's configuration
-        # to override the app's default settings for testing
         app.config.update(config)
 
     db.init_app(app)
     migrate.init_app(app, db)
 
-    # Register Blueprints here
+    app.register_blueprint(tasks_bp)
+    app.register_blueprint(goals_bp)
 
     return app
diff --git a/app/models/goal.py b/app/models/goal.py
index 44282656b..e4c40c282 100644
--- a/app/models/goal.py
+++ b/app/models/goal.py
@@ -1,5 +1,27 @@
-from sqlalchemy.orm import Mapped, mapped_column
+from sqlalchemy.orm import Mapped, mapped_column, relationship
 from ..db import db
+from typing import List, Optional
+
+from typing import TYPE_CHECKING
+if TYPE_CHECKING: from .task import Task
 
 class Goal(db.Model):
     id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
+    title: Mapped[str]
+    tasks: Mapped[List["Task"]] = relationship("Task", back_populates="goal")  
+    
+    @classmethod
+    def from_dict(cls, goal_data):
+        new_goal = Goal(title=goal_data["title"])
+        return new_goal
+
+    def to_dict(self, include_tasks=False, include_task_ids=False):
+        goal_dict = {
+            "id": self.id,
+            "title": self.title
+        }
+        if include_tasks:
+            goal_dict["tasks"] = [task.to_dict() for task in self.tasks]
+        if include_task_ids:  
+            goal_dict["task_ids"] = [task.id for task in self.tasks]
+        return goal_dict
\ No newline at end of file
diff --git a/app/models/task.py b/app/models/task.py
index 5d99666a4..66b7ee229 100644
--- a/app/models/task.py
+++ b/app/models/task.py
@@ -1,5 +1,36 @@
-from sqlalchemy.orm import Mapped, mapped_column
+from sqlalchemy.orm import Mapped, mapped_column, relationship
 from ..db import db
+from datetime import datetime
+from typing import Optional
+
+from typing import TYPE_CHECKING
+if TYPE_CHECKING: from .goal import Goal
 
 class Task(db.Model):
     id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
+    title: Mapped[str]
+    description: Mapped[str]
+    completed_at: Mapped[Optional[datetime]] = mapped_column(nullable=True)
+    goal_id: Mapped[Optional[int]] = mapped_column(db.ForeignKey("goal.id"))  
+    goal: Mapped[Optional["Goal"]] = relationship("Goal", back_populates="tasks")  
+
+    @classmethod
+    def from_dict(cls, task_data):
+        new_task = Task(
+            title=task_data["title"],
+            description=task_data["description"],
+            completed_at=task_data.get("completed_at")
+            
+        )
+        return new_task
+
+    def to_dict(self):
+        task_dict = {
+            "id": self.id,
+            "title": self.title,
+            "description": self.description,
+            "is_complete": bool(self.completed_at)
+        }
+        if self.goal_id:
+            task_dict["goal_id"] = self.goal_id
+        return task_dict
diff --git a/app/routes/goal_routes.py b/app/routes/goal_routes.py
index 3aae38d49..0321ab1a0 100644
--- a/app/routes/goal_routes.py
+++ b/app/routes/goal_routes.py
@@ -1 +1,93 @@
-from flask import Blueprint
\ No newline at end of file
+from flask import Blueprint, request, Response, abort, make_response
+from app.models.goal import Goal
+from app.models.task import Task
+from ..db import db
+from .route_utilities import validate_model
+
+bp = Blueprint("goals_bp", __name__, url_prefix="/goals")
+
+@bp.post("")
+def create_goal():
+    request_body = request.get_json()
+
+    try:
+        new_goal = Goal.from_dict(request_body)
+    except KeyError:
+        response = {"details": "Invalid data"}
+        abort(make_response(response, 400))
+
+    db.session.add(new_goal)
+    db.session.commit()
+    
+    return {"goal": new_goal.to_dict()}, 201
+
+@bp.get("")
+def get_all_goals():
+    goals = Goal.query.all()
+    goals_response = [goal.to_dict() for goal in goals]
+    return goals_response
+
+@bp.get("/<goal_id>")
+def get_one_goal(goal_id):
+    goal = validate_model(Goal, goal_id)
+    return {"goal": goal.to_dict()}, 200
+
+@bp.put("/<goal_id>")
+def update_goal(goal_id):
+    goal = validate_model(Goal, goal_id)
+    request_body = request.get_json()
+
+    goal.title = request_body["title"]
+    db.session.commit()
+
+    return Response(status=204, mimetype="application/json")
+
+@bp.delete("/<goal_id>")
+def delete_goal(goal_id):
+    goal = validate_model(Goal, goal_id)
+    db.session.delete(goal)
+    db.session.commit()
+
+    return Response(status=204, mimetype="application/json")
+
+
+
+@bp.route("/<goal_id>/tasks", methods=["POST"])
+def assign_tasks_to_goal(goal_id):
+    goal = validate_model(Goal, goal_id)
+    request_body = request.get_json()
+
+    if not request_body or "task_ids" not in request_body:
+        abort(400, description={"details": "Invalid data"})
+
+    
+    new_tasks = []
+    for task_id in request_body["task_ids"]:
+        task = validate_model(Task, task_id)
+        new_tasks.append(task)
+
+    
+    for task in goal.tasks:
+        task.goal_id = None
+
+    for task in new_tasks:
+        task.goal_id = goal.id
+
+    db.session.commit()
+
+    return {
+        "id": goal.id,
+        "task_ids": request_body["task_ids"]
+    }, 200
+
+
+
+@bp.route("/<goal_id>/tasks", methods=["GET"])
+def get_tasks_for_goal(goal_id):
+    goal = validate_model(Goal, goal_id)
+    
+    return {
+        "id": goal.id,
+        "title": goal.title,
+        "tasks": [task.to_dict() for task in goal.tasks]
+    }, 200
\ No newline at end of file
diff --git a/app/routes/route_utilities.py b/app/routes/route_utilities.py
new file mode 100644
index 000000000..1147740d8
--- /dev/null
+++ b/app/routes/route_utilities.py
@@ -0,0 +1,18 @@
+from flask import abort, make_response
+from ..db import db
+from app.models.task import Task
+from app.models.goal import Goal
+
+def validate_model(cls, model_id):
+    try:
+        model_id = int(model_id)
+    except (ValueError, TypeError):
+        abort(make_response({"message": f"{cls.__name__} {model_id} invalid"}, 400))
+
+    model = db.session.get(cls, model_id)
+    
+    if not model:
+        
+        abort(make_response({"message": f"{cls.__name__.lower()} {model_id} not found"}, 404))
+    
+    return model
\ No newline at end of file
diff --git a/app/routes/task_routes.py b/app/routes/task_routes.py
index 3aae38d49..af3242035 100644
--- a/app/routes/task_routes.py
+++ b/app/routes/task_routes.py
@@ -1 +1,136 @@
-from flask import Blueprint
\ No newline at end of file
+from flask import Blueprint, abort,make_response, request, Response, current_app
+from app.models.task import Task
+from ..db import db
+from datetime import datetime
+from sqlalchemy import asc, desc
+from .route_utilities import validate_model
+import requests
+import os
+
+bp = Blueprint("tasks_bp", __name__, url_prefix="/tasks")
+
+@bp.post("")
+def create_task():
+    request_body = request.get_json()
+
+    try:
+        new_task = Task.from_dict(request_body)
+    except KeyError:
+        response = {"details": "Invalid data"}
+        abort(make_response(response, 400))
+
+    db.session.add(new_task)
+    db.session.commit()  
+    
+    return {"task": new_task.to_dict()}, 201
+
+
+@bp.get("")
+def get_all_tasks():
+    query = db.select(Task)
+
+    title_param = request.args.get("title")
+    if title_param:
+        query = query.where(Task.title.ilike(f"%{title_param}%"))
+
+    description_param = request.args.get("description")
+    if description_param:
+        query = query.where(Task.description.ilike(f"%{description_param}%"))
+
+    sort_param = request.args.get("sort")
+    query = query.order_by(get_sort_order(sort_param))
+    
+    tasks = db.session.scalars(query)
+    tasks_response = [task.to_dict() for task in tasks]
+    return tasks_response
+
+
+@bp.get("/<task_id>")
+def get_one_task(task_id):
+    task = validate_model(Task,task_id)
+    return {"task": task.to_dict()}, 200
+
+
+@bp.put("/<task_id>")
+def update_task(task_id):
+    task = validate_model(Task,task_id)
+    request_body = request.get_json()
+
+    
+    task.title = request_body["title"]
+    task.description = request_body["description"]
+
+
+    completed_at_value = request_body.get("completed_at")
+    if completed_at_value:
+        try:
+            task.completed_at = datetime.fromisoformat(completed_at_value)
+        except ValueError:
+            response = {"message": "Invalid datetime format for completed_at. Expected ISO 8601 format."}
+            abort(make_response(response, 400))
+    else:
+        task.completed_at = None  
+
+    db.session.commit()
+
+    return Response(status=204, mimetype="application/json")
+
+
+@bp.delete("/<task_id>")
+def delete_task(task_id):
+    task = validate_model(Task,task_id)
+    db.session.delete(task)
+    db.session.commit()
+
+    return Response(status=204, mimetype="application/json")
+
+
+@bp.patch("/<task_id>/mark_complete")
+def mark_task_complete(task_id):
+    task = validate_model(Task, task_id)
+
+    task.completed_at = datetime.utcnow()
+    db.session.commit()
+
+    # Slack 
+    slack_token = os.environ.get("SLACK_BOT_TOKEN")
+    channel = os.environ.get("SLACK_CHANNEL", "task-notifications")
+    if slack_token:
+        try:
+            requests.post(
+                "https://slack.com/api/chat.postMessage",
+                headers={
+                    "Authorization": f"Bearer {slack_token}",
+                    "Content-Type": "application/json"
+                },
+                json={
+                    "channel": channel,
+                    "text": f"Someone just completed the task {task.title}"
+                }
+            )
+        except Exception as e:
+            current_app.logger.error(f"Slack error: {e}")
+
+    return Response(status=204, mimetype="application/json")
+
+
+@bp.patch("/<task_id>/mark_incomplete")
+def mark_task_incomplete(task_id):
+    task = validate_model(Task, task_id)
+    
+    task.completed_at = None
+    db.session.commit()
+    
+    return Response(status=204, mimetype="application/json")
+
+
+def get_sort_order(sort_param):
+    if sort_param == "asc":
+        return Task.title.asc()
+    elif sort_param == "desc":
+        return Task.title.desc()
+    elif sort_param == "id":
+        return Task.id.asc()  
+    elif sort_param == "is_complete":
+        return Task.is_complete.asc()  
+    return Task.id
\ No newline at end of file
diff --git a/migrations/README b/migrations/README
new file mode 100644
index 000000000..0e0484415
--- /dev/null
+++ b/migrations/README
@@ -0,0 +1 @@
+Single-database configuration for Flask.
diff --git a/migrations/alembic.ini b/migrations/alembic.ini
new file mode 100644
index 000000000..ec9d45c26
--- /dev/null
+++ b/migrations/alembic.ini
@@ -0,0 +1,50 @@
+# A generic, single database configuration.
+
+[alembic]
+# template used to generate migration files
+# file_template = %%(rev)s_%%(slug)s
+
+# set to 'true' to run the environment during
+# the 'revision' command, regardless of autogenerate
+# revision_environment = false
+
+
+# Logging configuration
+[loggers]
+keys = root,sqlalchemy,alembic,flask_migrate
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARN
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARN
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[logger_flask_migrate]
+level = INFO
+handlers =
+qualname = flask_migrate
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S
diff --git a/migrations/env.py b/migrations/env.py
new file mode 100644
index 000000000..4c9709271
--- /dev/null
+++ b/migrations/env.py
@@ -0,0 +1,113 @@
+import logging
+from logging.config import fileConfig
+
+from flask import current_app
+
+from alembic import context
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+fileConfig(config.config_file_name)
+logger = logging.getLogger('alembic.env')
+
+
+def get_engine():
+    try:
+        # this works with Flask-SQLAlchemy<3 and Alchemical
+        return current_app.extensions['migrate'].db.get_engine()
+    except (TypeError, AttributeError):
+        # this works with Flask-SQLAlchemy>=3
+        return current_app.extensions['migrate'].db.engine
+
+
+def get_engine_url():
+    try:
+        return get_engine().url.render_as_string(hide_password=False).replace(
+            '%', '%%')
+    except AttributeError:
+        return str(get_engine().url).replace('%', '%%')
+
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+config.set_main_option('sqlalchemy.url', get_engine_url())
+target_db = current_app.extensions['migrate'].db
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def get_metadata():
+    if hasattr(target_db, 'metadatas'):
+        return target_db.metadatas[None]
+    return target_db.metadata
+
+
+def run_migrations_offline():
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url, target_metadata=get_metadata(), literal_binds=True
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online():
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+
+    # this callback is used to prevent an auto-migration from being generated
+    # when there are no changes to the schema
+    # reference: http://alembic.zzzcomputing.com/en/latest/cookbook.html
+    def process_revision_directives(context, revision, directives):
+        if getattr(config.cmd_opts, 'autogenerate', False):
+            script = directives[0]
+            if script.upgrade_ops.is_empty():
+                directives[:] = []
+                logger.info('No changes in schema detected.')
+
+    conf_args = current_app.extensions['migrate'].configure_args
+    if conf_args.get("process_revision_directives") is None:
+        conf_args["process_revision_directives"] = process_revision_directives
+
+    connectable = get_engine()
+
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection,
+            target_metadata=get_metadata(),
+            **conf_args
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()
diff --git a/migrations/script.py.mako b/migrations/script.py.mako
new file mode 100644
index 000000000..2c0156303
--- /dev/null
+++ b/migrations/script.py.mako
@@ -0,0 +1,24 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision = ${repr(up_revision)}
+down_revision = ${repr(down_revision)}
+branch_labels = ${repr(branch_labels)}
+depends_on = ${repr(depends_on)}
+
+
+def upgrade():
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade():
+    ${downgrades if downgrades else "pass"}
diff --git a/migrations/versions/c0bec6981113_create_goals_table.py b/migrations/versions/c0bec6981113_create_goals_table.py
new file mode 100644
index 000000000..eda5b869f
--- /dev/null
+++ b/migrations/versions/c0bec6981113_create_goals_table.py
@@ -0,0 +1,32 @@
+"""Create goals table
+
+Revision ID: c0bec6981113
+Revises: c633ca08986d
+Create Date: 2025-05-08 11:26:32.277954
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'c0bec6981113'
+down_revision = 'c633ca08986d'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('goal', schema=None) as batch_op:
+        batch_op.add_column(sa.Column('title', sa.String(), nullable=False))
+
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('goal', schema=None) as batch_op:
+        batch_op.drop_column('title')
+
+    # ### end Alembic commands ###
diff --git a/migrations/versions/c633ca08986d_adds_task_model.py b/migrations/versions/c633ca08986d_adds_task_model.py
new file mode 100644
index 000000000..427503445
--- /dev/null
+++ b/migrations/versions/c633ca08986d_adds_task_model.py
@@ -0,0 +1,39 @@
+"""adds task model
+
+Revision ID: c633ca08986d
+Revises: 
+Create Date: 2025-05-06 02:30:30.781664
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'c633ca08986d'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('goal',
+    sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('task',
+    sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+    sa.Column('title', sa.String(), nullable=False),
+    sa.Column('description', sa.String(), nullable=False),
+    sa.Column('completed_at', sa.DateTime(), nullable=True),
+    sa.PrimaryKeyConstraint('id')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('task')
+    op.drop_table('goal')
+    # ### end Alembic commands ###
diff --git a/migrations/versions/eaffe09e5d8f_.py b/migrations/versions/eaffe09e5d8f_.py
new file mode 100644
index 000000000..206fea8f1
--- /dev/null
+++ b/migrations/versions/eaffe09e5d8f_.py
@@ -0,0 +1,34 @@
+"""empty message
+
+Revision ID: eaffe09e5d8f
+Revises: c0bec6981113
+Create Date: 2025-05-08 12:43:19.653071
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'eaffe09e5d8f'
+down_revision = 'c0bec6981113'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('task', schema=None) as batch_op:
+        batch_op.add_column(sa.Column('goal_id', sa.Integer(), nullable=True))
+        batch_op.create_foreign_key(None, 'goal', ['goal_id'], ['id'])
+
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('task', schema=None) as batch_op:
+        batch_op.drop_constraint(None, type_='foreignkey')
+        batch_op.drop_column('goal_id')
+
+    # ### end Alembic commands ###
diff --git a/tests/conftest.py b/tests/conftest.py
index a01499583..b1fe67753 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -90,6 +90,7 @@ def one_goal(app):
     new_goal = Goal(title="Build a habit of going outside daily")
     db.session.add(new_goal)
     db.session.commit()
+    
 
 
 # This fixture gets called in every test that
diff --git a/tests/test_wave_01.py b/tests/test_wave_01.py
index 55475db79..3b5f44c03 100644
--- a/tests/test_wave_01.py
+++ b/tests/test_wave_01.py
@@ -3,7 +3,7 @@
 import pytest
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_get_tasks_no_saved_tasks(client):
     # Act
     response = client.get("/tasks")
@@ -14,7 +14,7 @@ def test_get_tasks_no_saved_tasks(client):
     assert response_body == []
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_get_tasks_one_saved_tasks(client, one_task):
     # Act
     response = client.get("/tasks")
@@ -33,7 +33,7 @@ def test_get_tasks_one_saved_tasks(client, one_task):
     ]
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_get_task(client, one_task):
     # Act
     response = client.get("/tasks/1")
@@ -52,7 +52,7 @@ def test_get_task(client, one_task):
     }
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_get_task_not_found(client):
     # Act
     response = client.get("/tasks/1")
@@ -60,14 +60,10 @@ def test_get_task_not_found(client):
 
     # Assert
     assert response.status_code == 404
+    assert response_body == {"message": "task 1 not found"}
 
-    raise Exception("Complete test with assertion about response body")
-    # *****************************************************************
-    # **Complete test with assertion about response body***************
-    # *****************************************************************
 
-
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_create_task(client):
     # Act
     response = client.post("/tasks", json={
@@ -97,7 +93,7 @@ def test_create_task(client):
     assert new_task.completed_at == None
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_update_task(client, one_task):
     # Act
     response = client.put("/tasks/1", json={
@@ -117,7 +113,7 @@ def test_update_task(client, one_task):
 
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_update_task_not_found(client):
     # Act
     response = client.put("/tasks/1", json={
@@ -128,14 +124,11 @@ def test_update_task_not_found(client):
 
     # Assert
     assert response.status_code == 404
-
-    raise Exception("Complete test with assertion about response body")
-    # *****************************************************************
-    # **Complete test with assertion about response body***************
-    # *****************************************************************
+    assert "message" in response_body
+    assert response_body["message"] == "task 1 not found"
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_delete_task(client, one_task):
     # Act
     response = client.delete("/tasks/1")
@@ -146,7 +139,7 @@ def test_delete_task(client, one_task):
     query = db.select(Task).where(Task.id == 1)
     assert db.session.scalar(query) == None
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_delete_task_not_found(client):
     # Act
     response = client.delete("/tasks/1")
@@ -154,16 +147,13 @@ def test_delete_task_not_found(client):
 
     # Assert
     assert response.status_code == 404
-
-    raise Exception("Complete test with assertion about response body")
-    # *****************************************************************
-    # **Complete test with assertion about response body***************
-    # *****************************************************************
+    assert "message" in response_body
+    assert response_body["message"] == "task 1 not found"
 
     assert db.session.scalars(db.select(Task)).all() == []
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_create_task_must_contain_title(client):
     # Act
     response = client.post("/tasks", json={
@@ -180,7 +170,7 @@ def test_create_task_must_contain_title(client):
     assert db.session.scalars(db.select(Task)).all() == []
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_create_task_must_contain_description(client):
     # Act
     response = client.post("/tasks", json={
diff --git a/tests/test_wave_02.py b/tests/test_wave_02.py
index a087e0909..651e3aebd 100644
--- a/tests/test_wave_02.py
+++ b/tests/test_wave_02.py
@@ -1,7 +1,7 @@
 import pytest
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_get_tasks_sorted_asc(client, three_tasks):
     # Act
     response = client.get("/tasks?sort=asc")
@@ -29,7 +29,7 @@ def test_get_tasks_sorted_asc(client, three_tasks):
     ]
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_get_tasks_sorted_desc(client, three_tasks):
     # Act
     response = client.get("/tasks?sort=desc")
diff --git a/tests/test_wave_03.py b/tests/test_wave_03.py
index d7d441695..e02bc20fd 100644
--- a/tests/test_wave_03.py
+++ b/tests/test_wave_03.py
@@ -6,7 +6,7 @@
 import pytest
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_mark_complete_on_incomplete_task(client, one_task):
     # Arrange
     """
@@ -34,7 +34,7 @@ def test_mark_complete_on_incomplete_task(client, one_task):
     assert db.session.scalar(query).completed_at
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_mark_incomplete_on_complete_task(client, completed_task):
     # Act
     response = client.patch("/tasks/1/mark_incomplete")
@@ -46,7 +46,7 @@ def test_mark_incomplete_on_complete_task(client, completed_task):
     assert db.session.scalar(query).completed_at == None
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_mark_complete_on_completed_task(client, completed_task):
     # Arrange
     """
@@ -74,7 +74,7 @@ def test_mark_complete_on_completed_task(client, completed_task):
     query = db.select(Task).where(Task.id == 1)
     assert db.session.scalar(query).completed_at
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_mark_incomplete_on_incomplete_task(client, one_task):
     # Act
     response = client.patch("/tasks/1/mark_incomplete")
@@ -86,7 +86,7 @@ def test_mark_incomplete_on_incomplete_task(client, one_task):
     assert db.session.scalar(query).completed_at == None
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_mark_complete_missing_task(client):
     # Act
     response = client.patch("/tasks/1/mark_complete")
@@ -94,14 +94,12 @@ def test_mark_complete_missing_task(client):
 
     # Assert
     assert response.status_code == 404
+    assert response_body == {
+        "message": "task 1 not found"
+    }
 
-    raise Exception("Complete test with assertion about response body")
-    # *****************************************************************
-    # **Complete test with assertion about response body***************
-    # *****************************************************************
 
-
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_mark_incomplete_missing_task(client):
     # Act
     response = client.patch("/tasks/1/mark_incomplete")
@@ -109,8 +107,6 @@ def test_mark_incomplete_missing_task(client):
 
     # Assert
     assert response.status_code == 404
-
-    raise Exception("Complete test with assertion about response body")
-    # *****************************************************************
-    # **Complete test with assertion about response body***************
-    # *****************************************************************
+    assert response_body == {
+        "message": "task 1 not found"
+    }
diff --git a/tests/test_wave_05.py b/tests/test_wave_05.py
index 222d10cf0..4b464d7ba 100644
--- a/tests/test_wave_05.py
+++ b/tests/test_wave_05.py
@@ -1,7 +1,7 @@
 import pytest
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_get_goals_no_saved_goals(client):
     # Act
     response = client.get("/goals")
@@ -12,7 +12,7 @@ def test_get_goals_no_saved_goals(client):
     assert response_body == []
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_get_goals_one_saved_goal(client, one_goal):
     # Act
     response = client.get("/goals")
@@ -29,7 +29,7 @@ def test_get_goals_one_saved_goal(client, one_goal):
     ]
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_get_goal(client, one_goal):
     # Act
     response = client.get("/goals/1")
@@ -46,22 +46,21 @@ def test_get_goal(client, one_goal):
     }
 
 
-@pytest.mark.skip(reason="test to be completed by student")
+# @pytest.mark.skip(reason="test to be completed by student")
 def test_get_goal_not_found(client):
     pass
     # Act
     response = client.get("/goals/1")
     response_body = response.get_json()
 
-    raise Exception("Complete test")
     # Assert
-    # ---- Complete Test ----
-    # assertion 1 goes here
-    # assertion 2 goes here
-    # ---- Complete Test ----
+    assert response.status_code == 404
+    assert response_body == {
+        "message": "goal 1 not found"
+    }
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_create_goal(client):
     # Act
     response = client.post("/goals", json={
@@ -80,34 +79,54 @@ def test_create_goal(client):
     }
 
 
-@pytest.mark.skip(reason="test to be completed by student")
+# @pytest.mark.skip(reason="test to be completed by student")
 def test_update_goal(client, one_goal):
-    raise Exception("Complete test")
+    # Arrange
+    updated_data = {
+        "title": "Updated goal title"
+    }
+
     # Act
-    # ---- Complete Act Here ----
+    response = client.put("/goals/1", json=updated_data)
 
     # Assert
-    # ---- Complete Assertions Here ----
-    # assertion 1 goes here
-    # assertion 2 goes here
-    # assertion 3 goes here
-    # ---- Complete Assertions Here ----
+    # assertion 1: response status code is 204 (No Content)
+    assert response.status_code == 204
+
+    # assertion 2: the response body is empty
+    assert response.data == b''
+
+    # assertion 3: get the updated goal and verify the new title
+    get_response = client.get("/goals/1")
+    response_body = get_response.get_json()
+    
+    assert get_response.status_code == 200
+    assert response_body == {
+        "goal": {
+            "id": 1,
+            "title": "Updated goal title"
+        }
+    }
 
 
-@pytest.mark.skip(reason="test to be completed by student")
+# @pytest.mark.skip(reason="test to be completed by student")
 def test_update_goal_not_found(client):
-    raise Exception("Complete test")
+
     # Act
-    # ---- Complete Act Here ----
+    response = client.put(
+        "/goals/1",
+        json={"title": "Updated Title"}
+    )
+    response_body = response.get_json()
 
     # Assert
-    # ---- Complete Assertions Here ----
-    # assertion 1 goes here
-    # assertion 2 goes here
-    # ---- Complete Assertions Here ----
+    assert response.status_code == 404
+    assert response_body == {
+        "message": "goal 1 not found"  # Matches validate_model's format
+    }
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_delete_goal(client, one_goal):
     # Act
     response = client.delete("/goals/1")
@@ -115,34 +134,33 @@ def test_delete_goal(client, one_goal):
     # Assert
     assert response.status_code == 204
 
-    # Check that the goal was deleted
+    
     response = client.get("/goals/1")
     assert response.status_code == 404
 
     response_body = response.get_json()
     assert "message" in response_body
 
-    raise Exception("Complete test with assertion about response body")
-    # *****************************************************************
-    # **Complete test with assertion about response body***************
-    # *****************************************************************
+    assert response.status_code == 404
+    assert response_body == {
+        "message": "goal 1 not found"  
+    }
 
 
-@pytest.mark.skip(reason="test to be completed by student")
+# @pytest.mark.skip(reason="test to be completed by student")
 def test_delete_goal_not_found(client):
-    raise Exception("Complete test")
-
     # Act
-    # ---- Complete Act Here ----
+    response = client.delete("/goals/1")
+    response_body = response.get_json()
 
     # Assert
-    # ---- Complete Assertions Here ----
-    # assertion 1 goes here
-    # assertion 2 goes here
-    # ---- Complete Assertions Here ----
+    assert response.status_code == 404
+    assert response_body == {
+        "message": "goal 1 not found"  
+    }
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_create_goal_missing_title(client):
     # Act
     response = client.post("/goals", json={})
diff --git a/tests/test_wave_06.py b/tests/test_wave_06.py
index 0317f835a..1301334ec 100644
--- a/tests/test_wave_06.py
+++ b/tests/test_wave_06.py
@@ -3,7 +3,7 @@
 import pytest
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_post_task_ids_to_goal(client, one_goal, three_tasks):
     # Act
     response = client.post("/goals/1/tasks", json={
@@ -25,7 +25,7 @@ def test_post_task_ids_to_goal(client, one_goal, three_tasks):
     assert len(db.session.scalar(query).tasks) == 3
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_post_task_ids_to_goal_already_with_goals(client, one_task_belongs_to_one_goal, three_tasks):
     # Act
     response = client.post("/goals/1/tasks", json={
@@ -45,7 +45,7 @@ def test_post_task_ids_to_goal_already_with_goals(client, one_task_belongs_to_on
     assert len(db.session.scalar(query).tasks) == 2
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_get_tasks_for_specific_goal_no_goal(client):
     # Act
     response = client.get("/goals/1/tasks")
@@ -53,14 +53,10 @@ def test_get_tasks_for_specific_goal_no_goal(client):
 
     # Assert
     assert response.status_code == 404
+    assert response_body == {"message": "goal 1 not found"}
 
-    raise Exception("Complete test with assertion about response body")
-    # *****************************************************************
-    # **Complete test with assertion about response body***************
-    # *****************************************************************
 
-
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_get_tasks_for_specific_goal_no_tasks(client, one_goal):
     # Act
     response = client.get("/goals/1/tasks")
@@ -77,7 +73,7 @@ def test_get_tasks_for_specific_goal_no_tasks(client, one_goal):
     }
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_get_tasks_for_specific_goal(client, one_task_belongs_to_one_goal):
     # Act
     response = client.get("/goals/1/tasks")
@@ -102,7 +98,7 @@ def test_get_tasks_for_specific_goal(client, one_task_belongs_to_one_goal):
     }
 
 
-@pytest.mark.skip(reason="No way to test this feature yet")
+# @pytest.mark.skip(reason="No way to test this feature yet")
 def test_get_task_includes_goal_id(client, one_task_belongs_to_one_goal):
     response = client.get("/tasks/1")
     response_body = response.get_json()