Teacher2Teacher Q&A #4347

Grouping students

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From: Gail (for Teacher2Teacher Service)
Date: Jul 28, 2000 at 20:11:07
Subject: Re: Grouping students

OK, now I am intrigued by this... so I tried it too, but I wrote the names on one cylinder in the reverse order of the other cylinder, and I found that if you started with an even number of students, and rotated the cylinder an even number of spaces you could make partners without conflict, because the names always paired up with each other. Here is what I mean: (pretend each letter stands for a name...) A B C D E F G H I J (this is how they look at the start...) J I H G F E D C B A A B C D E F G H I J (this is after 1 twist... I H G F E D C B A J some of the people have the same partner) A B C D E F G H I J (this is after 2 twists...) H G F E D C B A J I A B C D E F G H I J (this is after 3 twists... G F E D C B A J I H some of the people have the same partner) A B C D E F G H I J (this is after 4 twists...) F E D C B A J I H G A B C D E F G H I J (this is after 5 twists... E D C B A J I H G F some of the people have the same partner) A B C D E F G H I J (this is after 6 twists...) D C B A J I H G F E I realize it doesn't answer your question about Websites, but it sure is interesting to me, so I hope I haven't bored you... now I am wondering why this works with even numbers, but not with odd numbers. (I tried it, and always got doubled partners, no matter how many twists). I am also wondering if you do indeed get all the students partnered up with other people, like you wanted... eventually... :-) -Gail, for the Teacher2Teacher service

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