Does a curve ball really curve? Why does a golf ball have dimples? Answers to these and hundreds of other questions in this entertaining, well-illustrated account of scientific principles underlying major sports activities. Includes a chapter on athlete's body and its performance related to physical principles.
Science Research Experiments for Young People by George Barr Intriguing collection of 40 illustrated experiments to attract and stimulate young minds. Flight-test homemade rocket balloons, track electricity around the house, and more.
Calculator Puzzles, Tricks and Games by Norvin Pallas Perform amazing feats of mathematical magic, answer clever riddles, solve a baffling murder and much more with this clever introduction to calculator games. Answers included.
Fun with Science: 46 Entertaining Demonstrations by George Barr The Mystery of the Balancing Butterflies, The Invisible Movie Screen, The Suspended Paper Clip and other feats that demonstrate basic scientific principles with materials that are safe, inexpensive, and easily available.
