MultipleChoiceRadio1

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).

• File location in OPL: FortLewis/Authoring/Templates/Misc/MultipleChoiceRadio1.pg

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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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