248 lines
9.5 KiB
YAML
248 lines
9.5 KiB
YAML
---
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metadata:
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display_name: Problem Written in LaTeX
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source_code: |
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% Nearly any kind of edX problem can be authored using LaTeX as
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% the source language. Write LaTeX as usual, including equations. The
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% key feature is the \edXabox{} macro, which specifies an "answer
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% box" that queries students for a response, and specifies what the
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% expected (correct) answer is.
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\subsection{Example "option" problem}
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Which of the following countries celebrates its independence on August 15?
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\edXabox{options='India','Spain','China','Bermuda' expect='India'}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\subsection{Example "multiple choice" problem}
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Which of the following countries has the largest population?
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\edXabox{ type="multichoice" expect="Indonesia" options="Brazil","Germany","Indonesia","Russia" }
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\subsection{Example "symbolic" problem}
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What is Einstein's equation for the energy equivalent of a mass $m$?
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\edXabox{type='symbolic' size='90' expect='m*c^2' }
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\subsection{Example "numerical" problem}
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Estimate the energy savings (in J/y) if all the people
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($3\times 10^8$) in the U.~S. switched from U.~S. code to low-flow
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shower heads.
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\edXinline{Energy saved = }\edXabox{expect="0.52" type="numerical" tolerance='0.02' inline='1' } %
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\edXinline{~EJ/year}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\subsection{Example "string response" problem}
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What was the first post-secondary school in China to allow both male and female students?
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\edXabox{ type="string" expect="Nanjing Higher Normal Institute" options="ci" }
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You can include an explanation of the answer by using the edXsolution
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macro. Click "Show Answer" to see the explanation.
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\begin{edXsolution}
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Nanjing Higher Normal Institute first admitted female students in 1920.
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\end{edXsolution}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\subsection{Example "custom response" problem}
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In this problem, a custom Python script determines if the answer is correct.
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\begin{edXscript}
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def sumtest(expect,ans):
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(a1,a2) = map(float,eval(ans))
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return (a1+a2)==10
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\end{edXscript}
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Enter a Python list of two numbers that sum to 10. For example, your answer might be [9,1] or [4,6].
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\edXabox{expect="[1,9]" type="custom" cfn="sumtest"}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\subsection{Example image}
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Include an image by using the following macro:
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\edXxml{<img src="https://courses.edx.org/static/images/placeholder-image.png"/>}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\subsection{Example show/hide explanation}
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You can provide additional information that only appears at certain times by including a "showhide" flag.
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\edXshowhide{sh1}{More explanation}{This is a hidden explanation. It
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can contain equations, such as $\alpha = \frac{2}{\sqrt{1+\gamma}}$ }.
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This is additional text after the hidden explanation.
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markdown: !!null
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data: |
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<?xml version="1.0"?>
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<problem>
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<p>
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If you have a problem that is already written in LaTeX, you can use this problem type to
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easily convert your code into XML. After you paste your code into the LaTeX editor,
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you only need to make a few minor adjustments.
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</p>
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<p>
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For more information, see
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<a href="https://docs.openedx.org/en/latest/educators/how-tos/course_development/exercise_tools/create_problem_in_latex.html" target="_blank">
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Problem Written in LaTeX</a> in <i>Building and Running an Open edX Course</i>.
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</p>
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<p>You can use the following example problems as models.</p>
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<p><strong>Example Option Problem</strong></p>
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<br/>
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<optionresponse>
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<label>Which of the following countries celebrates its independence on August 15?</label>
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<optioninput options="('India','Spain','China','Bermuda')" correct="India"></optioninput>
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<solution>
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<div class="detailed-solution">
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<p>Explanation</p>
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<p>India became an independent nation on August 15, 1947.</p>
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</div>
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</solution>
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</optionresponse>
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<br/>
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<p><strong>Example Multiple Choice Problem</strong></p>
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<multiplechoiceresponse>
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<label>Which of the following countries has the largest population?</label>
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<choicegroup type="MultipleChoice">
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<choice correct="false" name="brazil">Brazil</choice>
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<choice correct="false" name="germany">Germany</choice>
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<choice correct="true" name="indonesia">Indonesia</choice>
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<choice correct="false" name="russia">Russia</choice>
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</choicegroup>
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<solution>
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<div class="detailed-solution">
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<p>Explanation</p>
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<p>According to September 2014 estimates:</p>
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<p>The population of Indonesia is approximately 250 million.</p>
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<p>The population of Brazil is approximately 200 million.</p>
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<p>The population of Russia is approximately 146 million.</p>
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<p>The population of Germany is approximately 81 million.</p>
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</div>
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</solution>
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</multiplechoiceresponse>
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<br/>
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<p><strong>Example Math Expression Problem</strong></p>
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<symbolicresponse expect="m*c^2">
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<p>What is Einstein's equation for the energy equivalent of a mass [mathjaxinline]m[/mathjaxinline]?</p>
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<textline size="90" correct_answer="m*c^2" math="1"/>
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</symbolicresponse>
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<br/>
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<p><strong>Example Numerical Problem</strong></p>
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<numericalresponse inline="1" answer="0.52">
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<label>Estimate the energy savings (in J/y) if all the people ([mathjaxinline]3\times 10^8[/mathjaxinline]) in the U. S. switched from U. S. code to low-flow shower heads.</label>
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<formulaequationinput trailing_text="EJ/year" />
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<responseparam type="tolerance" default="0.02"/>
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</numericalresponse>
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<br/>
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<p><strong>Example Fill-in-the-Blank Problem</strong></p>
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<stringresponse answer="Nanjing Higher Normal Institute" type="ci" >
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<label>What was the first post-secondary school in China to allow both male and female students?</label>
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<additional_answer>National Central University</additional_answer>
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<additional_answer>Nanjing University</additional_answer>
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<textline size="40"/>
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<solution>
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<div class="detailed-solution">
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<p>Explanation</p>
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<p>Nanjing Higher Normal Institute first admitted female students in 1920.</p>
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</div>
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</solution>
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</stringresponse>
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<br/>
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<p><strong>Example Custom Python-Evaluated Input Problem</strong></p>
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<customresponse cfn="test_add_to_ten">
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<script type="loncapa/python">
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def test_add_to_ten(expect, ans):
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return test_add(10, ans)
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</script>
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<p>Enter two integers that sum to 10.</p>
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<textline size="40" correct_answer="3"/><br/>
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<textline size="40" correct_answer="7"/>
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<solution>
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<div class="detailed-solution">
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<p>Explanation</p>
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<p>Any set of integers on the line \(y = 10 - x\) satisfy these constraints.</p>
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</div>
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</solution>
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</customresponse>
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<customresponse cfn="test_add" expect="20">
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<script type="loncapa/python">
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def test_add(expect, ans):
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try:
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a1=int(ans[0])
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a2=int(ans[1])
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return (a1+a2) == int(expect)
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except ValueError:
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return False
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</script>
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<p>Enter two integers that sum to 20.</p>
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<textline size="40" correct_answer="11"/><br/>
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<textline size="40" correct_answer="9"/>
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<solution>
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<div class="detailed-solution">
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<p>Explanation</p>
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<p>Any set of integers on the line \(y = 20 - x\) satisfy these constraints.</p>
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<p>To add an image to the solution, use an HTML "img" tag. Make sure to include alt text.</p>
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<img src="/static/images/placeholder-image.png" width="400" alt="Description of image"/>
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</div>
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</solution>
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</customresponse>
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<br/>
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<p><strong>Example Image Mapped Input Problem</strong></p>
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<imageresponse>
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<p>
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What country is home to the Great Pyramid of Giza as well as the cities
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of Cairo and Memphis? Click the country on the map below.
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</p>
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<imageinput src="https://studio.edx.org/c4x/edX/DemoX/asset/Africa.png"
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width="600" height="638" rectangle="(338,98)-(412,168)" alt="Map of
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Africa"/>
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<solution>
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<div class="detailed-solution">
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<p>Explanation</p>
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<p>Egypt is home to not only the Pyramids, Cairo, and Memphis, but also
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the Sphinx and the ancient Royal Library of Alexandria.</p>
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</div>
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</solution>
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</imageresponse>
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<br/>
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<p><strong>Example Hidden Explanation</strong></p>
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<p>You can provide additional information that only appears at certain times by including a "showhide" flag. </p>
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<p>
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<table class="wikitable collapsible collapsed">
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<tbody>
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<tr>
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<th> More Information [<a href="javascript:$('#sh1').toggle()" id="sh1l">show</a>]</th>
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</tr>
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<tr id="sh1" style="display:none">
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<td>
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<p>This is a hidden explanation. It can contain equations, such as [mathjaxinline]\alpha = \frac{2}{\sqrt {1+\gamma }}[/mathjaxinline]. </p>
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<p>This is additional text after the hidden explanation. </p>
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</td>
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</tr>
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</tbody>
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</table>
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</p>
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</problem>
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