Describes how to measure the daily rhythm of activity (photoperiodism) of small mammals. Three methods for recording information are reviewed including instructions for making a recorder. Includes suggestions for activities and experiments. (PR)

Described are the basic materials and procedures used to study defensive burying behavior and suggested laboratory projects. Discusses live targets, non-living targets, social variables, and previous experiences of the subjects. (CW)

Describes animal behavior experiments that can be easily performed by secondary school students. The experiments illustrate territorial behavior, social order, and exploratory behavior in Mongolian gerbils. (JR)