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Hill, Doug; Oludontun, James – School Science and Mathematics, 1990
Improvements in the mechanism of the whirlybird used in the Science Curriculum Improvement Study (SCIS) unit "Subsystems and Variables" are presented. Variables which can be investigated using this device are discussed. An illustration of the improved device is provided. (CW)
Descriptors: Elementary Education, Elementary School Science, Experiential Learning, Laboratory Experiments

Orlans, F. Barbara; And Others – Science Teacher, 1991
Discussed are the two sides to the question of laboratory dissections. Alternatives to dissection are proposed as well as the importance of incorporating dissections in a science curriculum. (KR)
Descriptors: Controversial Issues (Course Content), Dissection, Ethics, Experiential Learning