Meaning Of Adolescence (1953) An overview of the social, emotional, mental and physical changes which occur in the adolescent with suggestions on how … meaning-of-adolescence-1953
Meaning Of Pi (1949) A dorky kid tries to figure out what pi is. Explains how pi denotes the ratio of a circle to its diameter. Shows the use of circles in art, industry and commerce. Outlines a procedure by which the numerical value of pi can be checked and reviewed, and describes the discovery […]
Illustrates principles for measuring distance, mass and time–the basic quantities in physical science. Emphasizes the importance of accuracy. Provides laboratory