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)

Care and maintenance of snails are described. (BB)

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)

Discusses the culturing of microorganisms as a laboratory activity emphaszing the growth of microorganisms in food. Provides background and safety information, procedures, and additional ideas. The complete unit (teacher's guide, student worksheets, evaluation and assessment, and resources for students and teachers) is available from the author.…

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)

A set of instructions for growing algae successfully in the classroom and maintaining the culture is provided. Aids for identification of freshwater organisms are suggested. (SA)

Three activities involving electromagnetism are presented. Discussed are investigations involving the construction of an electromagnet, the effect of the number of turns of wire in the magnet, and the effect of the number of batteries in the circuit. Extension activities are suggested. (CW)

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)

Techniques are described for using living plants in the elementary science classroom including the germination and planting of seeds, transplanting seedlings, vegetative propagation, stem and leaf cuttings, and other plant studies. (DS)

An activity is described in which students learn modeling skills by creating concrete models with familiar objects. Teaching methods, materials, procedures, and outcomes are discussed. (CW)