> >I teach an intensive summer geometry class in Santa Cruz, CA. It's 4 >hours a day and the kids and I are suffering from the heat. Any >suggestions on what we can do at the beach that I can relate to geometry. >( We are going to start similar triangles on Monday) > Hi, The idea of going to the beach sounds great! At the NCTM conference, I heard that the Egyptians developed the Pythagorean theorem to help restore boundaries between properties after the flood. They did theis somehow by using the shoreline and ropes with knots. Has anyone else heard of this? Can anyone else explain how to replicate it? I know one rope has to have, say five knots, and another 12, in other words, they used the 3,4,5 and 5,12, 13 figures. Anyway, a shore is a shore and maybe you can improvise something on this theme.
Also, the volume of holes that students could dig in the sand could be another area to explore.