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16-mm movie 30 miles per 3M x 4-inch apparatus assigned for study Astigmatism astronomy atmosphere at sunrise attitudes and appreciations automobile best-answer bicycle brakes brakes are applied carbon cellophane CHARLES F chemistry and physics chemistry or physics CHICAGO concave mirrors conclusions Convection Convex correct cotton demonstration equipment Demonstration Experiments demonstration table Demonstrations described desirable viewpoint Directions discussion Display models distances required earth effect effects of refraction electric electric charges electromagnetic waves entering our atmosphere equipment evaluation example experiment false fatal accidents occur feet to stop film film roll following pages function given laboratory activity headlights high-school home-made home-made telescope horsepower hydrogen important Inclined Plane individual ing function interests interpretive viewpoint kinds of waves laboratory activities laboratory period learning lens light Machine Age machines MANUAL FOR TEACHERS mastery of facts material means ment miles per hour molecule motion pictures Nearsightedness objective test objective test items Oersted's Opaque projector outcomes parentheses PASADENA JUNIOR COLLEGE phasis physical science physical science course Physical World plishment possible preliminary outline prepare prepare films principles prisms problem products of science projector propaganda pupil questions Radiant energy radio rayon rays rays of light reading refraction required to stop retina schools science course science education Scientific method Scoring recommended significance simple machines sion social specialized science speed statement Steam engine still slides stop a car stopping distance student STUDENT ACTIVITIES subjects suggested sunrise sunrise and sunset sunset tained term report text are found true true-false true-false test understanding unemployment Unit VII velocity visual aids watts wave length waves weigh or measure word or phrase x 4-inch slide