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In this activity, learners make their own pinhole viewer in order to measure the size of the sun.

In this activity, learners will predict the size of a giant scale model of a comb or other rectangular object, then make one. If you tripled the size of a dollar bill, could you sit on it?

In this activity, learners will participate in a scavenger hunt involving sizes, shapes, and numbers. This activity works well with a whole group, individuals, or families.

In this activity, learners follow clues to find five puzzle pieces, then assemble them. This activity works well with a whole group, individuals, or families.

This lesson focuses on surface area and how the shape of sugar crystals may differ as they are grown from sugars of different coarseness.