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Conway, Gregory J. – Science Teacher, 1989
Describes an activity in which students graph changes in tides and ocean levels over a period in order to obtain a visual representation of the changes taking place and their effects upon the Earth. Provides questions for students to answer after construction of the graphs. (RT)
Descriptors: Climate, Earth Science, Environmental Influences, Experiential Learning

Shugrue, Sylvia K. – Science Activities, 1992
Presents year-long, elementary science projects that address the question of why daylight hours vary in length according to locality. Provides three instructional units designed to commence in September, including data collection activities for sunny days encouraging later classroom calculations; on-going graphing activities; and modeling…
Descriptors: Astronomy, Earth Science, Elementary Education, Elementary School Science