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In this activity, learners investigate color vision as well as plan and conduct their own experiments.

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 observe and describe the physical and behavioral characteristics of insects, including crickets.

In this two-part activity, learners explore the Earth and Sun's positions in relation to the constellations of the ecliptic with a small model.

In this activity, learners participate in a simulated dig to discover fossilized dinosaur bones. Learners take notes, make a map and propose theories about dinosaurs.

In this math lesson, learners are introduced to proportional reasoning through modeling, sharing, and questioning techniques.

In this two-part math lesson, learners investigate problems that foster algebraic thinking across content strands. In the first part, learners explore even and odd numbers linked to quilts.

In this outdoor activity, learners work in pairs using their senses—especially touch—to learn more about individual trees.

In this activity, learners construct a projector out of cardboard to view their favorite images (such as storybook illustrations) on the wall.