Summarizes practical projects, science activities, and teaching aids usable in teaching of the astronomy section of physics courses at the pre-O, O and A-level stages. Indicates that the teacher interest is the decisive factor influencing introduction of astronomy into schools. (CC)

Analyzes the role of experiments in science teaching, and applies this analysis to the teaching of Millikan's experiment in physics. Critically examines an article written by T. J. Harvey entitled Millikan made easy'' which was previously published in The School Science Review. (JR)

Research supported by the School of Criminal Justice, Michigan State University, East Lansing, Michigan. (VM)

Applications of wheels are shown to be an invaluable tool in teaching the processes and technology of science. (DF)

An experiment in which both Raman-Nath and Bragg diffraction of light by acoustic waves in water are observed in the sound frequency range from 5 to 45 MHz. The apparatus consists of a laser, light detector, rf power source, quartz transducer, and homemade water cell. (Author/DF)

A description is given in which a computer program can be used to illustrate principles of statistical mechanics. The concepts of ensembles, statistical averages, and responses are classified particularly with respect to the role of statistical fluctuations. (DF)