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>

    </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>