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Investigating Science: Space, Creative Teaching Press, 1987

Burning Mirror, Paths of Light, Circles in the Water

Fascinating Experiments in Physics by François Cherrier, Sterling Publishing, NY, 1979 (originally published in France as Experiences de Physique Amusante, 1975)

Ideas and Integrities

Ideas and Integrities by Buckminster Fuller, Collier Books, 1963 (1972 edition)