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Learners will compare the growth rate and appearance of crystals forming on small rocks to those growing on miscellaneous objects. Learners will also investigate how temperature (warm vs.

In this activity (page 2 of PDF under GPS: Glaciers Activity), learners will measure the rate at which water streams out of a leaky cup.

In this demonstration, learners explore a variation of a Foucault pendulum, but upside down.

This activity helps learners understand how the angle of the Sun affects temperatures around the globe.