Companion volume to Fun with Science and Fun with Chemistry. A more difficult subject with which to catch the imagination at any age. If you like figures, you just do (if you don't, you don't). A boy- or girl- who liked figures would find these experiments, with tie-up to familiar problems (how far distant is a specific object, how high is a tree, what distance will a thrown solid reach, what makes a screw push forward, how to tie knote, how to make one-sided bands, etc.) fun to try, and each experiment leads on to the outskirts of solid geometry, trigonometry and higher mathematics painlessly.