Hope you can see a picture here. I am at the Glasgow Science Museum with my 6 year old. The picture shows one large square and two smaller squares, each on one edge of a right angled triangle. The squares have water in them - just enough to fill the big square. You spin the shape and the water moves around and there is just enough water to fill the two smaller squares. I've known pythagorus' theorum for years and understood it; now I believe it.
Wish they'd had one of these at school.
Clarke Ching - www.clarkeching.com +44(0)7920114893 - Author of Rocks Into Gold - www.RocksIntoGold.com - and, coming soon, Rolling Rocks Downhill, a business novel.
