This repository has been archived by the owner on May 11, 2021. It is now read-only.
Add exercise: One Step Equations 0.5 #7532
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,111 @@ | ||
| <!DOCTYPE html> | ||
| <html data-require="math math-format expressions"> | ||
| <head> | ||
| <meta charset="UTF-8" /> | ||
| <title>One-step equations 0.5</title> | ||
| <script src="../khan-exercise.js"></script> | ||
| </head> | ||
| <body> | ||
| <div class="exercise"> | ||
| <div class="vars"> | ||
| <var id="LETTERS">"abkmnpvxy"</var> | ||
| <var id="X">LETTERS.charAt( randRange( 0, LETTERS.length - 1 ) )</var> | ||
|
There was a problem hiding this comment. Maybe we need a There was a problem hiding this comment. Or just |
||
| </div> | ||
| <div class="problems"> | ||
| <div id="add-subtract" data-weight="4"> | ||
| <div class="vars" data-ensure="Y !== Z"> | ||
| <var id="INDEX">randRange( 0, 1 )</var> | ||
| <var id="Y">randRangeNonZero( -20, 19 )</var> | ||
| <var id="Z" data-ensure="Z > Y">randRange( 1, 20 )</var> | ||
| <var id="Y_SIGN">Y > 0 ? "-" : "+"</var> | ||
| <var id="LEFT">[expr( ["+", X, Y] ), Z][INDEX]</var> | ||
| <var id="RIGHT">[Z, expr( ["+", X, Y] )][INDEX]</var> | ||
| </div> | ||
| <p class="question">Solve for <var>X</var>.</p> | ||
| <p><code>\large{<var>LEFT</var> = <var>RIGHT</var>}</code></p> | ||
| <div class="solution" data-forms="integer"><var>Z - Y</var></div> | ||
| <div class="hints"> | ||
| <div> | ||
| <p><var>Y > 0 ? "Subtract" : "Add"</var> <var>abs(Y)</var> <var>Y > 0 ? "from" : "to"</var> both sides.</p> | ||
| <p data-if="INDEX === 0"><code>\large{<var>X</var>\color{blue}{<var>Y_SIGN</var><var>abs( Y )</var>} = <var>RIGHT</var>\color{blue}{<var>Y_SIGN</var><var>abs( Y )</var>}}</code></p> | ||
| <p data-else><code>\large{<var>LEFT</var>\color{blue}{<var>Y_SIGN</var><var>abs( Y )</var>} = <var>X</var>\color{blue}{<var>Y_SIGN</var><var>abs( Y )</var>}}</code></p> | ||
| </div> | ||
|
There was a problem hiding this comment. I wonder if it makes sense to split this into two hints. It could be that people know how to add/subtract to/from both sides but don't know that they should? |
||
| <div> | ||
| <p>Simplify.</p> | ||
| <div data-if="INDEX === 0"> | ||
| <p><code>\large{<var>X</var> = <var>Z - Y</var>}</code></p> | ||
| </div> | ||
| <div data-else> | ||
| <p><code>\large{<var>Z - Y</var> = <var>X</var>}</code></p> | ||
| </div> | ||
| </div> | ||
| </div> | ||
| </div> | ||
| <div id="multiply" data-weight="2"> | ||
| <div class="vars"> | ||
| <var id="INDEX">randRange( 0, 1 )</var> | ||
| <var id="Y">randRange( 2, 10 )</var> | ||
| <var id="Z">randRange( 1, 9) * Y</var> | ||
| <var id="LEFT">[expr( ["*", Y, X] ), Z][INDEX]</var> | ||
| <var id="RIGHT">[Z, expr( ["*", Y, X] )][INDEX]</var> | ||
| </div> | ||
| <p class="question">Solve for <var>X</var>.</p> | ||
| <p><code>\large{<var>LEFT</var> = <var>RIGHT</var>}</code></p> | ||
| <div class="solution" data-type="rational"><var>Z / Y</var></div> | ||
| <div class="hints"> | ||
| <div data-if="INDEX === 0"> | ||
| <p>Divide both sides by <var>Y</var>.</p> | ||
| <p><code>\large{\dfrac{<var>X</var>}{\color{blue}{<var>Y</var>}} = \dfrac{<var>Z</var>}{\color{blue}{<var>Y</var>}}}</code></p> | ||
| </div> | ||
| <div data-else> | ||
| <p>Divide both sides by <var>Y</var>.</p> | ||
| <p><code>\large{\dfrac{<var>Z</var>}{\color{blue}{<var>Y</var>}} = \dfrac{<var>X</var>}{\color{blue}{<var>Y</var>}}}</code></p> | ||
| </div> | ||
| <div> | ||
| <p>Simplify.</p> | ||
| <div data-if="INDEX === 0"> | ||
| <p><code>\large{<var>X</var> = <var>Z / Y</var>}</code></p> | ||
| </div> | ||
| <div data-else> | ||
| <p><code>\large{<var>Z / Y</var> = <var>X</var>}</code></p> | ||
| </div> | ||
| </div> | ||
| </div> | ||
| </div> | ||
| <div id="divide" data-weight="1"> | ||
| <div class="vars"> | ||
| <var id="INDEX">randRange( 0, 1 )</var> | ||
| <var id="Y">randRange( 2, 10 )</var> | ||
| <var id="Z">randRange( 2, 10)</var> | ||
| </div> | ||
| <p class="problem"><b>Solve for <var>X</var>.</b></p> | ||
| <p class="question"><code>\large{\dfrac{<var>X</var>}{<var>Y</var>} = <var>Z</var>}</code></p> | ||
| <div class="solution" data-type="rational"><var>Z * Y</var></div> | ||
| <div class="hints"> | ||
| <div> | ||
| <p>Multiply both sides by <var>Y</var>.</p> | ||
| <p><code>\large{\dfrac{<var>X</var>}{<var>Y</var>} \cdot {\color{blue}{<var>Y</var>}} = <var>Z</var> \cdot {\color{blue}{<var>Y</var>}}}</code></p> | ||
| </div> | ||
| <div> | ||
| <p>Simplify.</p> | ||
| <p><code>\large{<var>X</var> = <var>Z * Y</var>}</code></p> | ||
| </div> | ||
| </div> | ||
| </div> | ||
| <div id="divide-right" data-type="divide" data-weight="1"> | ||
| <p class="question"><code>\large{<var>Z</var> = \dfrac{<var>X</var>}{<var>Y</var>}}</code></p> | ||
| <div class="hints"> | ||
| <div> | ||
| <p>Multiply both sides by <var>Y</var>.</p> | ||
| <p><code>\large{<var>Z</var> \cdot {\color{blue}{<var>Y</var>}} = \dfrac{<var>X</var>}{<var>Y</var>} \cdot {\color{blue}{<var>Y</var>}}}</code></p> | ||
| </div> | ||
| <div> | ||
| <p>Simplify.</p> | ||
| <p><code>\large{<var>Z * Y</var> = <var>X</var>}</code></p> | ||
| </div> | ||
|
There was a problem hiding this comment. Maybe an extra X = ZY hint at the end? |
||
| </div> | ||
| </div> | ||
| </div> | ||
| </div> | ||
| </body> | ||
| </html> | ||
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
If you leave off the type completely (
<p class="solution">), it will accept decimals like 37.0 as well.