Suggestions for the design and production of power supplies and meters for use in school physics laboratories and classrooms are provided. Details of these apparatus are given including circuit diagrams. (CW)

The question of how children solve force and motion problems in computer simulations without explicit knowledge of the underlying physics was investigated. Keystroke sequences made by children were saved and analyzed, and children were interviewed to understand their perception of the relationship between keyboard input and on-screen action. (CW)

Presented is a brief review of the historical importance and knowledge of pneumonia which emphasizes the importance of type transformation. The results of a survey of textbook coverage of this topic are given. The significance of type transformations are discussed. (CW)

The construction of a model that is useful for teaching stereochemistry from a sealed empty envelope is described. Detailed steps with accompanying diagrams are given. (CW)

The construction of a model that is useful for teaching stereochemistry from two sealed empty envelopes is described. Detailed steps with accompanying diagrams are given. (CW)

Reviewed are two 35MM slide sets "Halley's Comet Revealed" and "Supernova 1987A"; and a videotape entitled "Experiments; Physics Level 1. Magnetic Fields." Features, availability, strengths and weaknesses are discussed. (CW)

Presents ideas on how common household light bulbs can be used to develop interest in learning physics. Focuses on supermarket data taking and analyses, filament temperatures, detective work with three-way bulbs, and lifetime statistics. (YP)

Defines and discusses jerk, the time rate of change of the acceleration. Presents some cases of jerk with mathematical expressions. Provides questions and problems for classroom use. Lists seven references. (YP)

Presents a demonstration that gives students an opportunity to observe how the composition of food can be analyzed. Outlines materials, directions, and background enrichment information. Cites additional references for use. (RT)

Presents an identification method which uses the process of elimination to identify pollination systems. Provides the polyclave key, methodology for using the key, a sample worksheet, and abbreviation codes for pollination systems. (MVL)

Investigated were the effects of interactive computer-generated homework on unit tests, a final examination, and a comprehensive test given near the end of a Physical Science I course. The results indicated that the use of the homework reduced the effectiveness of the American College Test scores as a predictor of course achievement. (YP)

Reviews the problem of certain logical and conceptual shortcomings in textbook presentations of the energy concepts in introductory physics. Discusses concepts and principles related to thermodynamics and echanics. Provides many formulas and diagrams. (YP)

Suggests an apparatus to improve the measurement of the mechanical equivalent of heat. Describes the materials needed to construct the apparatus; the methodology of an experiment to measure the heat gained by lead shot falling through a distance of 100 meters; and the calculations made to register that gain. (MDH)

Described is a project which was designed to take advantage of the use of a videocassette recorder to produce science lessons which could be viewed by children and their parents at home. Examples of several home lessons are provided. Feedback for the program is discussed. (CW)

Discusses visual style in instructional science materials; describes problems with science media, including too much print on a page or screen and inappropriate designs for children; and highlights new products that have good design style as well as good content, including books, computer simulations, videos, computer software, and microworlds.…