Multiple Choice Questions - mkraska/meclib GitHub Wiki

This page shows the steps to create an MC input. Based on the official STACK documentation on MC input. Nothing below is specific to Meclib. Yet it might be helpful.

Input, PRT and General feedback are different for single correct choices and multiple correct choices.

Question variables

XX_mcq is the definition of the options, which of them is correct and how to display them. This goes to the model solution field of the mcq input field. The first entry in each option is the so called value. It should match the position of the entry in the list. For multiple correct choices you should add an entry "none of the other" to distinguish non-answered questions from deliberate response that none is correct.

XX is the base name of the input.

XX_mcq: [
  [1, true, "display"],
  [2, false, "display2" ],
  [3, false, "display3" ]
];

Question text

As usual, a set of input, validation and feedback is allocated:

Select the correct answer: [input:S_XX](/mkraska/meclib/wiki/input:S_XX) [validation:S_XX](/mkraska/meclib/wiki/validation:S_XX), [feedback:XX](/mkraska/meclib/wiki/feedback:XX)

Input S_XX

There are three options for MC input:

• Drop down list (only single correct choices)
• Radio buttons (only single correct choices)
• Checkbox (list) Use this if there could be more than one correct choice.

Option	value
Input type	Checkbox or Drop down list or Radio
Model solution	XX_mcq
Student must validate	No
Show validation	No

Potential response tree XX

PRT for single correct choice

Option	value
Feedback variables
PRT feedback style	compact
Answer test	AlgEquiv
SAns	S_XX
TAns	mcq_correct(XX_mcq)[1]

PRT for multiple correct choices

Option	value
Feedback variables	OK: is(length(sublist(fb_mcq, lambda([x], x[2] # member(x[1], S_fb))))=0);
PRT feedback style	compact
Answer test	AlgEquiv
SAns	OK
TAns	true

General feedback

The list of correct choices can be displayed using

{@mcq_correct(XX_mcq)[3][1]@}  /* single correct choice */

{@stack_disp_comma_separate(makelist(XX_mcq[x][3], x, XX))@}  /* multiple correct choices */