Thursday, May 11, 2006

171. Bulletin board

A while back I asked for suggestions for the school bulletin board. A number of you asked what I ended up doing. I had my students choose a number and make a small poster for that number with information on that umber. I laminated them and put them up.

Here is some of the information from the posters (in the students' words:

For 22 you mean maximum, right? the minimum must frequently be 1, or even 0.
Choco, I think you misunderstand the statement.

It is saying that, given a Rubik's cube, it can be solved in 22 moves or fewer. 22 is the minimum such number.

Sort of like the four-color theorem for maps. Only this is the 22 turn theorem for Rubik's cubes.
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