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To: MicroWorlds Forum <mwforum@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: MIA, Ask an Expert: using lists to generate random questions
From: Susan Weiss <sweiss@xxxxxxxxxxxxxxxxxx>
Date: Sun, 20 Mar 2011 23:52:40 -0400

My students made 15 questions so I used excel and generated the list of
combinations.  There is really 75 questions since there are 15 per grade for
K-5.   I am just going to print out the three choices and make 15 stars to
select the question for each grade and each star goes to a different
question.  Thanks again.
Susan

On Sun, Mar 20, 2011 at 12:40 PM, Daniel Ajoy <da.ajoy@xxxxxxxxx> wrote:

>  from: Susan <sweiss@xxxxxxxxxxxxxxxxxx>
>> date: Sun Mar 20 06:02:02 2011
>> platform: Platform not specified
>> version: MicroWorlds Ex
>>
>> My students made 5 questions with answers.   They want to choose only 3
>> questions randomly .   Each  question is a separate program since the answer
>> causes a mouse to move.   How can we randomize the order of the questions.
>>
>
> These are all the 3 element permutations of a 5 element set:
>
>
> [[1 2 3] [1 2 4] [1 2 5] [1 3 2] [1 3 4] [1 3 5] [1 4 2] [1 4 3] [1 4 5]
> [1 5 2] [1 5 3] [1 5 4] [2 1 3] [2 1 4] [2 1 5] [2 3 1] [2 3 4] [2 3 5] [2 4
> 1] [2 4 3] [2 4 5] [2 5 1] [2 5 3] [2 5 4] [3 1 2] [3 1 4] [3 1 5] [3 2 1]
> [3 2 4] [3 2 5] [3 4 1] [3 4 2] [3 4 5] [3 5 1] [3 5 2] [3 5 4] [4 1 2] [4 1
> 3] [4 1 5] [4 2 1] [4 2 3] [4 2 5] [4 3 1] [4 3 2] [4 3 5] [4 5 1] [4 5 2]
> [4 5 3] [5 1 2] [5 1 3] [5 1 4] [5 2 1] [5 2 3] [5 2 4] [5 3 1] [5 3 2] [5 3
> 4] [5 4 1] [5 4 2] [5 4 3]]
>
> You can put that into a variable:
>
>
> make "p [[1 2 3] [1 2 4] [1 2 5] [1 3 2] [1 3 4] [1 3 5] [1 4 2] [1 4 3]
> [1 4 5] [1 5 2] [1 5 3] [1 5 4] [2 1 3] [2 1 4] [2 1 5] [2 3 1] [2 3 4] [2 3
> 5] [2 4 1] [2 4 3] [2 4 5] [2 5 1] [2 5 3] [2 5 4] [3 1 2] [3 1 4] [3 1 5]
> [3 2 1] [3 2 4] [3 2 5] [3 4 1] [3 4 2] [3 4 5] [3 5 1] [3 5 2] [3 5 4] [4 1
> 2] [4 1 3] [4 1 5] [4 2 1] [4 2 3] [4 2 5] [4 3 1] [4 3 2] [4 3 5] [4 5 1]
> [4 5 2] [4 5 3] [5 1 2] [5 1 3] [5 1 4] [5 2 1] [5 2 3] [5 2 4] [5 3 1] [5 3
> 2] [5 3 4] [5 4 1] [5 4 2] [5 4 3]]
>
> Then use "pick"
>
> make "mythree pick :p
>
> show :mythree
> 3 2 1
>
> Then use the elements of :mythree in this way:
>
> show item 1 :mythree
> 3
>
> show item 2 :mythree
> 2
>
> show item 3 :mythree
> 1
>
>
> ... The questions would have to be numerated.
>
> Daniel
> OpenWorld Learning
>
>
>

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