# Difference between revisions of "PopUpListsLong"

## Pop-Up Lists For Many Questions With Common Answers

Often you may have many questions that have the same set of answers, such as a list of true or false questions, or a list of multiple choice questions in which the choices are the same for each question. This PG code allows takes the hassle out of creating such a PG problem by requiring only that you modify an array of questions and answers, the instructions for the student, and the list of choices for every question. To prevent students from being able to copy each other's answers verbatim, we shuffle the order of the questions. It is also possible to include random elements into each question (but not each answer, since the list of answers is a list of strings and needs to be the same for all questions).

This code shows how to create lengthy pop-up lists in a WeBWorK problem using newer constructs. This example comes from /Library/Rochester/setMAAtutorial/popuplistexample.pg

PG problem file Explanation
DOCUMENT();

"PGchoicemacros.pl",
"PGcourse.pl",
);

TEXT(beginproblem);


Initialization: The first three macros are required.

# Create and use pop up lists
$tf = new_select_list();$tf->rf_print_q(~~&pop_up_list_print_q);

# Specify choices presented to students
$tf -> ra_pop_up_list( [ No_answer => "?", T => "True", F => "False"] ); # Questions and answers$tf -> qa (
"All continuous functions are differentiable.",
"F",
"All differentiable functions are continuous.",
"T",
"All polynomials are differentiable.",
"T",
"All functions with positive derivatives are increasing.",
"T",
"All compact sets are closed",
"T",
"All closed sets are compact",
"F",
"All increasing functions have positive deriviatives",
"F",
"All differentiable strictly increasing functions have non-negative derivatives
at every point",
"T",
);

# Number of randomly chosen questions to display to students
$tf ->choose(4);  Setup: Make a new select list$tf that "contains" the select list object. Then, change the printing mechanism of the object to use pop-up list instead of an answer rule. Construct the choices, and note how the list is constructed [ answer => list element text, answer => list element text ] What should the pop-up list contain, and what string should it submit for an answer when selected? Submit T when the student selects True and F when False. The first choice is a blank to make the students select something. Insert some questions and their answers (note: each entry has to end with a comma).

BEGIN_TEXT

Are the following statements true or false?
$BR \{$tf-> print_q \}

END_TEXT


Instructions and Question for all parts: You may modify the instructions if you want. You should explicitly say what all of the possible answers are so that students who have a pdf or a paper copy can work directly from it.

ANS(str_cmp($tf->ra_correct_ans));$showPartialCorrectAnswers=0;

ENDDOCUMENT();


Main Text and Answer Evaluation: You should not need to modify this section at all.

This code shows how to create lengthy pop-up lists in a WeBWorK problem using older-style answer checkers, some deprecated elements such as shuffle, and elementary bits of code to build things from scratch.

PG problem file Explanation
DOCUMENT();

"PG.pl",
"PGstandard.pl",
"PGcourse.pl",
"PGchoicemacros.pl",
);

TEXT(beginproblem);


Initialization: We need to include the PGchoicemacros.pl macro file.

$a = random(1,5,1); @questions_and_answers = ( "True", "Larry is one of the three stooges.", "False", "Gandalf is one of the three stooges.", "False", "$$\pi + a$$ is rational.", ); @choices = ("True", "False");  Set-up: Create an array in which questions alternate with answers. Answers may be any string. For true or false questions, this is the only part of the example that needs to be modified. We added a randomized element to the question about pi. Do not use the names$numq, $qn, or$qns to avoid conflicts with the code below.

BEGIN_TEXT

Are the following statements true or false?
$BR$BR

END_TEXT


Instructions and Question for all parts: You may modify the instructions if you want. You should explicitly say what all of the possible answers are so that students who have a pdf or a paper copy can work directly from it.

$numq = scalar(@questions_and_answers)/2; #$numq = number of questions
@shuffle = shuffle($numq); @abc = (a..z); # or (A..Z) or (1..$numq)

for $qn (0..$numq-1) { # $qn = question number$qns = $shuffle[$qn];  # $qns = question number shuffled BEGIN_TEXT @abc[$qn]. \{ pop_up_list(['?', @choices]) \} $SPACE$questions_and_answers[2*$qns+1]$BR$BR END_TEXT ANS(str_cmp($questions_and_answers[2*$qns], filters=>["trim_whitespace","compress_whitespace"])); }$showPartialCorrectAnswers=0;

ENDDOCUMENT();


Main Text and Answer Evaluation: You should not need to modify this section at all. We shuffle the order of the questions and use a for loop to generate one question and one answer evaluator for each pair in the array @questions_and_answers.