We now KNOW that 20 moves is always enough to solve a standard 3x3x3 Rubik's cube.
Tom Rokicki, the man who proved that, reveals all here:
www.youtube.com/watch?v=0FAY...
#Gathering4Gardner
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Soma Cubes made from 1 cm connecting cubes in little plastic jared
Soma Tubes.
Still not quite wide enough to build Soma Cube and drop the jar over it. The pieces fit and it is very inexpensive and cute. Grade 3 and 4 kids activity in Feb.
#puzzle #Gathering4Gardner #MathSky #ITeachMath
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After exactly 4 years, I've stepped down as Chair* of Gathering 4 Gardner. ney.us:9090 or 209.127.13.34:9090 #Gathering4Gardner #MartinGardner
It was a privilege to serve. I remain on the board.
* there will be no Chair from now on.
G4G will be lead by previous Chair Nancy Blachman, as President.
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