Edmund Reid

The focus of this film is on Canada's nuclear research centre at Chalk River, Ontario. Key to atomic progress are the radioactive isotopes. The insertion and handling of these isotopes in the deadly interior of the reactor are shown in detail. Also shown are the applications of radioactive isotopes in various fields of endeavor, particularly medicine, agriculture, and manufacturing industries. Co-produced by the NFB and Crawley Films Ltd. with the assistance of Atomic Energy of Canada Limited.

Discusses how the emotional and physical development of children from ten to twelve years manifests itself in their behavior, their attitudes toward their parents, their teachers, and each other. Shows the children of one family in various situations in the home, at school, and in group play, and explains that much of their conflicting behavior is actually a normal part of their growing process