Uses discarded light bulbs to make balanced aquaria. (AL)

Simple soap bubbles can be used to have children make educationally valuable discoveries about how materials behave, what their properties are, and how they can be used or changed. (Author/BB)

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

Care and maintenance of snails are described. (BB)

Suggests methods of teaching principles of geological inference by observation of sidewalks, parking lots, school grounds, and vacant lots. (AL)

Describes the process of collecting and maintaining a culture of protozoa. Instructions are also given for constructing a micropipette for transfering small organisms. (SA)

Described is the use of ordinary ceramic magnets to replace the more expensive bar magnets commonly used. Suggestions for 11 task cards to help introduce children to the uses and principles of magnetism are provided. (CW)

Described is a third-grade science unit using feathers. Children use the feathers to learn about measurement, observation, and inference. Procedures and results are discussed. (CW)

Some of the background factors and deleterious effects of oil spills are discussed. A classroom activity which demonstrates an oil spill, how the oil affects feathers, and one clean-up method is presented. A list of recent oil spills and three additional resources are included. (CW)

A hands-on science lesson which allows young students to apply stains in the classroom and then try to remove them is presented. Included are a list of materials, procedures, and a discussion of probable results. (CW)

Described is an experiment designed to illustrate photosynthesis. The experiment is based on a classic experiment performed by vanHelmont in the sixteenth century. A list of materials, procedures, and concepts are discussed. Variations are suggested. (CW)