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In this activity, learners confront their perceptions of gravity in the solar system.

In this math lesson, learners explore the concept of using units to measure length. Learners first read "How Big is a Foot" by Rolf Myller and learn about units.

In this activity (on pages 18-28), learners explore how the shape of seeds affects how they are dispersed by wind, birds, ocean currents and other means.

In this math lesson, learners practice estimation and measurement skills as they move from station to station calculating length, volume, weight, and area.