Presented is an alternative approach to teaching the Physical Science Study Committee (PSSC) wave model of light, using microwaves. Effectiveness of the alternate approach was determined by student achievement of six objectives. Both experimental and conventional PSSC methods were satisfactory for reaching the objectives. (DS)

Discusses the consequences and possible impact of changes being caused by outside agencies rather than by science teachers. Such agencies are National Assessment, national curriculum committees, and outside groups determining teacher adequacy. Suggested teacher initiated changes include changing the sequence of high school courses, developing new…

Presents the procedures, results, and conclusions of a study to compare the effectiveness of the open-ended chemistry laboratory with the traditional laboratory. Different classes of high school students in a college-preparatory chemistry course were exposed to the two laboratory techniques. The achievement tests and the Watson-Glaser Critical…