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In this math lesson, learners make estimates to analyze the number of apples per acre, and visualize the magnitude of one million.

In this activity, learners explore dinosaur fossils by making cast models of a T. rex. First, learners read about and research how dinosaur fossils form.

In this activity, learners solidify their conceptualization of cells by building a model of a cell in a ziplock bag.

In this open-ended multicultural lab activity, learners investigate the effectiveness of herbal remedies.

In this activity, learners consider how a simple machine, a lever, turns a small push or pull (a small force) into a larger--or stronger--push or pull (a larger force).