Described is the subject of biological scaling for physics teachers including examples and in-depth reading. Topics are elements of scaling, terminal velocities, Lilliputian and Brobdingnagian, brain evolution, dolphin echolocation, surface tension, gravity change, food and oxygen, and seeing. Ten references on physics and size, and ten questions…

Describes the development of the Chicago Museum of Science and Industry and its exhibits, which rely on participatory techniques in furthering public understanding of science and technology. Two thousand exhibit units cover seventy-five diverse fields, and the museum's educational program comprises twenty scientific demonstrations. Special…

Answers a student's question about the emission of a positron from a nucleus. Discusses the problem from the aspects of the uncertainty principle, beta decay, the Fermi Theory, and modern physics. (YP)