Advocates a simplified procedure for assessing the validity of experimental data. Suggests using the range of the results of a limited number of repeated measurements to obtain confidence limits about the probable over-all average of repeating the same procedure a great many times. Bibliography. (LC)

Describes a course on environmental pollution which stresses physical and chemical principles. Course presents a unified discussion of air and water pollution and solid waste with special treatment of pesticides, thermal pollution, radioactivity, and electric power generation. Uses historical and current statistics extensively to set pollution…

The administration of a test based on Jean Piaget's method of determining logical thinking revealed that only 33 of 131 freshmen could meet the criteria for formal operations. Reviews research which indicates that logical thought can be enhanced by inquiry-oriented courses. Elementary and secondary teachers do not use inquiry teaching because…

Describes the revision of a college biology sequence, and outlines the content of some courses in the core. (AL)

Lists and describes simple and inexpensive equipment for student use for units on electricity, mechanics, and waves and optics. (DS)