Procedures for using soap films to determine the shortest series of lines connecting several points. (CP)

In a poster session, students explain an experiment with the help of a poster that outlines the experimental procedures followed. Suggestions for preparing posters and conducting poster sessions are provided. A sample poster on the strength of electromagnets is also provided. (JN)

Discusses a research project of testing detergents that resulted from students' classroom observations of and questions about water pollution and suds. Outlines procedures and responsibilities necessary for conducting the experiment. A sample student data sheet is included. (RT)

Describes an elementary school science activity in which students conduct experiments to verify their hypotheses relating to the effect of salt and other chemicals on the melting point on ice. (JR)

Describes an experiment, conducted by sixth-grade students, with mice that demonstrates the importance of a balanced diet. (JR)

Describes precautions that should be taken and procedures that should be followed to minimize the risk of accidents in the school science laboratory. (JR)

Presents chemistry activities suitable for elementary students. Lists chemicals commonly used in elementary science, their common names, and where they may be obtained. (DS)

Describes science activities which use simple chemical tests to distinguish between materials and to determine some of their properties. Explains the water, iodine, heat, acid, baking soda, acid/base indicator, glucose, and sugar tests. Includes activities to enhance chemical testing and a list of suggested powders for use. (RT)

Garlic is an ideal plant for the elementary classroom. It grows rapidly in water without aeration for several weeks and remains relatively free of microbial contamination. Simple experiments with garlic purchased at grocery stores can illustrate various aspects of plant growth. (PR)

Discusses some of the ways that a cabbage can be used to produce a universal indicator of pH. Describes the methods for producing the indicator, experiments students can do on ordinary household chemicals, and a student take-home assignment for producing pH indicators. (TW)

The harmful effects of smoking tobacco are discussed. Instructions, lists of materials, and discussion questions for three activities to investigate these effects are provided. A glossary of tobacco-use terms is given. (CW)

Explains a science project conducted by the Boston Museum of Science to provide enrichment activities through an interaction between children and scientists. Provides information on the packets of creative problem-solving experiences, a description of the program, the culminating event, and joining procedures. (RT)