MultipleChoiceRadio1

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Multiple Choice Question with Radio Buttons

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This PG code shows how to write a multiple choice question in which all of the options are displayed to the student and the student can only choose one correct answer (it uses radio buttons).


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PG problem file Explanation

Problem tagging data

Problem tagging:

DOCUMENT();

loadMacros(
"PGstandard.pl",
"MathObjects.pl",
"parserRadioButtons.pl",
);

TEXT(beginproblem());

Initialization: We need parserRadioButtons.pl

Context("Numeric");

$radio = RadioButtons(
  ["Red","Blue","Green","None of these"],
  "Blue", # correct answer
  last => ["None of these"], # can be a list
);

Setup: To create a radio object, use $radio = RadioButtons([choices,...],correct,options); For all options, see parserRadioButtons.pl.html The context is not really necessary, but multiple choice questions are often follow-up questions, so we leave it in.

Context()->texStrings;
BEGIN_TEXT
My favorite color is
$BR
$BR
\{ $radio->buttons() \}
END_TEXT
Context()->normalStrings;

Main Text:

install_problem_grader(~~&std_problem_grader);

$showPartialCorrectAnswers = 0;

ANS( $radio->cmp() );

Answer Evaluation: We withhold feedback by choosing not to show partially correct answers. We use the standard problem grader, which gives full credit or no credit. For other graders, see weighted graders

Context()->texStrings;
BEGIN_SOLUTION
${PAR}SOLUTION:$PAR
The correct answer is \{ $radio->correct_ans() \}
END_SOLUTION
Context()->normalStrings;

COMMENT('MathObject version.');

ENDDOCUMENT();

Solution:

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