PreTeXt Sample Book Abstract Algebra (SAMPLE ONLY)

<exercises xml:id="clickable-area-exercises">

<title>Clickable Area Exercises</title>

<exercise label="clickable-text">

  <title>Clickable Areas, <q>Regular</q> Text</title>

  <statement>

    <p>
      Identify (by clicking, or by circling) all of the nouns in this quotation by Eleanor Roosevelt.
    </p>

  </statement>

  <areas>

  <p>

    <q>The <area>future</area> belongs to <area correct="no">those</area> who believe in the <area correct="yes">beauty</area> of <area correct="no">their</area> <area>dreams</area>.</q>

  </p>

  </areas>

  <feedback>

    <p>
      The incorrect words are pronouns.
    </p>

  </feedback>

</exercise>

<exercise label="clickable-code">

  <title>Clickable Areas, Code</title>

  <statement>

    <p>
      Identify (by clicking, or by circling) all of the assignment statements in this Python function.
    </p>

  </statement>

  <areas language="python">

  <cline><area correct="no">def main():</area></cline>

  <cline>    <area correct="yes">x = 4</area></cline>

  <cline>    for i in range(5):</cline>

  <cline>        <area>y = i</area></cline>

  <cline>        <area correct="no">if y &gt; 2:</area></cline>

  <cline>            print(y)</cline>

  </areas>

  <feedback>

    <p>
      Remember, the operator <c>=</c> is used for assignment.
    </p>

  </feedback>

</exercise>

<exercise label="clickable-table">

  <title>Clickable Areas, Text in a Table</title>

  <statement>

    <p>
      A two-dimensional array was created in Python with the list comprehension:
      <cd>

      <cline>[[0 for x in range(3)] for y in range(2)]</cline>

      </cd>

      Then the values were (mostly) changed from zeros and the final array is shown below.
    </p>

    <p>
      Identify (by clicking, or by circling) all of the boolean values in the array.
    </p>

    <!--

    <p>
      Note that every entry is inline code, authored with a <tag>c</tag>.
    </p>

    -->
  </statement>

  <areas>

  <tabular top="minor" bottom="minor" left="minor" right="minor">

    <row>

      <cell><c>42</c></cell>

      <cell><area><c>True</c></area></cell>

      <cell><area correct="no"><c>'towel'</c></area></cell>

    </row>

    <row>

      <cell><area correct="no"><c>'true'</c></area></cell>

      <cell><c>0</c></cell>

      <cell><area><c>False</c></area></cell>

    </row>

  </tabular>

  <p>
    This second table has no <tag>area</tag>, in order to test CSS for tables.
  </p>

  <tabular top="minor" bottom="minor" left="minor" right="minor">

    <row>

      <cell><c>42</c></cell>

      <cell><c>True</c></cell>

      <cell><c>'towel'</c></cell>

    </row>

    <row>

      <cell><c>'true'</c></cell>

      <cell><c>0</c></cell>

      <cell><c>False</c></cell>

    </row>

  </tabular>

  </areas>

  <hint>

    <p>
      Python boolean variables begin with capital latters.
    </p>

  </hint>

  <feedback>

    <p>
      Python boolean variables are <c>True</c> and <c>False</c>.
      A value in quotation marks is a string, not a boolean.
    </p>

  </feedback>

</exercise>

</exercises>