Oh you know what else is good? Euclid! The original guy I mean! wink We've only dabbled with it, but it's actually a fairly accessible text for messing around with things and doing compass-and-straightedge constructions. I have a companion book by Benno Artmann that makes it even more straightforward (and mentions a lot of what has been done since the ancient Greeks... LOL). That one is called Euclid: The Creation of Mathematics.

Erica