This Child Development Associate (CDA) training module, one of a series of 18, provides a guide to science activities for preschool children. Objectives state that upon completion of the module the CDA trainee will be able to provide daily opportunities for science concept development; enhance children's problem solving abilities; stimulate creative thinking and problem solving through discovery learning; provide a science center; plan, execute and evaluate a minimum of 10 learning experiences in the biological and physical sciences; execute and evaluate five incidental science experiences; and expand the science experiences to include all sciences, such as hydrology, botany, chemistry and physics. Early sections of the module define terms and suggest a procedure by which trainees can evaluate their strengths and weaknesses. Subsequent chapters discuss the teacher's responsibility for science in the preschool, teaching science in the preschool, and activity development. The module also provides 15 learning activities, ranging from resource unit development to constructing a terrarium. Supplemental reference books, pamphlets, films, and children's books are listed. (RH)