CODEWITHSUNDEEP
moodler-exams
uzsolt
uzsolt

Reputation: 6027

Embedded answers in math mode (cloze, moodle)

I want create questions with R-exams to Moodle. In my case I want use cloze type and embed answers into math mode:

<<echo=FALSE,hide=TRUE>>=
@
\exname{foo}
\exsection{bar}
\extype{cloze}
\exclozetype{num|num}
\exsolution{1|1}
\begin{question}
  What are the answers?
  \[x_1=\frac{##ANSWER1##}{##ANSWER2##}\]
\end{question}

I can build Moodle-compatible XML but when I import it into Moodle it goes wrong: bad result

I tried \text{##ANSWER1##} but same result. I think the MathJax wants parse it too.

How can I use ##ANSWERx## in math mode?

Upvotes: 1

Views: 1030

Answers (1)

Achim Zeileis
Achim Zeileis

Reputation: 17193

I didn't find a solution that works inside LaTeX math when rendered by MathJax. My impression is that when the numerical fill-in-the-blank fields are inserted to the mathematical formula, the MathJax rendering does not work.

I see two possible workarounds: (1) Use a {table} with math markup for certain elements. (2) Use MathML rather than MathJax (i.e., works in Firefox and Safari but not Chrome).

1. Use a {table} instead.

\begin{question}
What are the answers?

\begin{tabular}{rc}
        & ##ANSWER1##                        \\
$x_1 =$ & \rule{\linewidth}{2\linethickness} \\
        & ##ANSWER2##
\end{tabular}
\end{question}

\exname{frac}
\extype{cloze}
\exclozetype{num|num}
\exsolution{1|1}

If you store the exercise code above in a file called frac.Rnw then using

exams2moodle("frac.Rnw")

and importing it into Moodle yields:

frac table

2. Use MathML

\begin{question}
What are the answers?

\[ x_1 = \frac{\text{##ANSWER1##}}{\text{##ANSWER2##}} \]
\end{question}

\exname{frac}
\extype{cloze}
\exclozetype{num|num}
\exsolution{1|1}

If you store this exercise code above in frac.Rnw and then use

exams2moodle("frac.Rnw", converter = "ttm")

the resulting Moodle import looks like this in Firefox:

frac MathML

Upvotes: 1

Related Questions