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In this activity, learners explore the relative size of the Sun and Earth as well as the distance between them.

In this nanoscience activity, learners discover that it's easy to pour water out of a regular-sized cup, but not out of a miniature cup.

In this demonstration, learners compare the relative sizes and masses of scale models of the planets as represented by fruits and other foods.

Learners engage in close observation of falling objects. They determine it is the amount of air resistance, not the weight of an object, which determines how quickly an object falls.

In this fun and simple hands-on astronomy activity, learners construct a model of our place in the Milky Way Galaxy and the distribution of stars, with a quarter and some birdseed.

In this activity, learners explore how distance can affect the way we perceive the size of an object.

In this physics activity, learners construct a small-scale version of a classic carnival game.

This three-part activity consists of an activity that groups of learners develop themselves, a given procedure, and an optional demonstration.

Working in groups, learners model the continuous destruction and creation of ozone (O3) molecules, which occur in the ozone layer.