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>