Pyramids January 24, 2012 Build pyramids and see if you can see patterns in the numbers.
http://netapps.marshall.edu/lego/lessonplans/PyramidSeries/PyramidSeries.html 6 times 6 is 36
9 times 9 is 81
Here are some nice patterns.
How many blocks are saved by building hollow? Enough to build
the ones 2 layers smaller and so on.
How much do they weigh? How many to make a pound?