1.
Here is a question.
Section 16.3 Divisions of <exercise>s
You can also put several
<exercise>s as part of an <exercises> element within a division, which is the typical way for creating a collection of exercises togther at the end of a division such as a chapter or section. The content of an <exercises> division is rather limited. It can begin with an <introduction> (perhaps a set of common instructions), followed by a mixture of <exercise> and <exercisegroup> (see Subsection 16.3.1) elements, followed by an optional <conclusion>. The sample code in Listing 16.3.1 illustrates this structure, which is rendered later as “16.4 Exercises”. An alternative structure for an
<exercises> division is to use a sequence of <subsexercises> elements, optionally preceded by an <introduction> and followed by a <conclusion>. The content of a <subexercises> element is identical to what was described above for an <exercises> element, but we emphasize that a strong rationale for using <subexercises> (as opposed to <exercisegroup>) is that a <subexercises> element can begin with a <title>, providing a clear way of organizing the <exercise>s for the reader.
Subsection 16.3.1 <exercisegroup>
Sometimes you have several exercises that should all have a common set of instructions, which is when you will use the
<exercisegroup> tag. An <exercisegroup> can only be used as part of an <exercises> element or a <subexercises> element, however! The portion of this section headed as “16.4 Exercises” is produced using the code in Listing 16.3.1.<exercises xml:id="basics-s-sample-exercises">
<exercisegroup>
<introduction>
<p>
Here's where you put the common instructions.
</p>
</introduction>
<exercise>
<statement>
<p>
First exercise.
<idx><h sortby="statement"><tag>statement</tag></h><h sortby="of an exercise">of an <tag>exercise</tag></h></idx>
<idx><h sortby="exercise"><tag>exercise</tag></h><h sortby="statement"><tag>statement</tag></h></idx>
You can add all the usual bells and whistles after,
but we'll keep it short here.
(The <tag>statement</tag> may be omitted if none of
<tag>hint</tag>, <tag>answer</tag>, or <tag>solution</tag>
are present as a child of the <tag>exercise</tag>.)
</p>
</statement>
</exercise>
<exercise>
<statement>
<p>
Second exercise.
</p>
</statement>
<hint>
<p>
The <tag>statement</tag> for this exercise is necessary because we
have included at least one of
<tag>hint</tag>, <tag>answer</tag>, or <tag>solution</tag>
(namely, <tag>hint</tag>).
</p>
</hint>
</exercise>
<exercise>
<p>
Third exercise.
(No <tag>statement</tag> necessary here because no
<tag>hint</tag>, <tag>answer</tag>, or <tag>solution</tag>.)
</p>
</exercise>
</exercisegroup>
<exercise>
<p>
This <tag>exercise</tag> is not inside the <tag>exercisegroup</tag>.
</p>
</exercise>
</exercises>
<exercisegroup>. If you want the contents of an
<exercisegroup> to be put in multiple columns, you can add a @cols attribute to the <exercisegroup> with value (for example) 3. The integer value of @cols must be between 2 and 6 (inclusive). The code in Listing 16.3.1 produces the output seen in Exercises 16.4.
Subsection 16.3.2 Reading questions
Another specialized division,
<reading-questions>, can be used to house <exercise>s designed to test or guide a reader’s comprehension of the material in that division. The structure of a <reading-questions> element is similar to an <exercises> element, but without the grouping options of <subexercises> and <exercisegroup>. The portion of this section headed as “16.3.3 Check your understanding!” is produced using the code in Listing 16.3.2.<reading-questions xml:id="basics-reading-questions">
<title>Check your understanding!</title>
<introduction>
<p>
Here is a spot to explain the purpose of these questions. It's
optional, like most introductions.
</p>
</introduction>
<exercise>
<statement>
<p>
Here is a question.
</p>
</statement>
<hint>
<p>
A little hint.
</p>
</hint>
<answer>
<p>
Just the answer.
</p>
</answer>
<solution>
<p>
All the glorious details about an answer.
</p>
</solution>
</exercise>
<exercise>
<statement>
<p>
A second comprehension question. We don't bother with answers
or solutions.
</p>
</statement>
</exercise>
<conclusion>
<p>
A little wrap up, perhaps giving guidance or encouragement if
the student struggled with the questions. Optional like most
conclusions.
</p>
</conclusion>
</reading-questions>
<reading-questions>.Reading Questions 16.3.3 Check your understanding!
Here is a spot to explain the purpose of these questions. It’s optional, like most introductions.
2.
A second comprehension question. We don’t bother with answers or solutions.
A little wrap up, perhaps giving guidance or encouragement if the student struggled with the questions. Optional like most conclusions.
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