Describes procedure to make electric circuit cards by using paper cards and aluminum foil. Detailed instructions and illustrations are included. (PS)

Describes a physics laboratory course which operates without written instructions and with no required experiments. Course is based upon one- or two-week topics in mechanics, heat, electromagnetism and optics with a student-designed experiment in modern physics as an extended project. (DF)

Students need a wide range of experiences in considering the biological, social, economic, and psychological aspects of crowding on their lives and on their community. (DF)

Describes a simulated experiment in which a ship's position is determined by the Doppler principle. The formulas derived for the real satellite system are given. (CC)

An introductory course is designed with relevance for directly instilling into the students a sense of the unity and coherence of chemical ideas. The sequence also has the flavor'' of a research project. (DF)