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Learners observe a model of a cell and its chromosomal DNA made from a plastic egg and dental floss. Use this model to illustrate how much DNA is held in one cell.

Build a catapult that transforms the potential energy of a twisted rubber band into kinetic energy. Experiment with design variations so that you can hit a target with a projectile.

This demonstration activity models how Venus appears from Earth.

This fun and simple hands-on astronomy activity lets learners build a scale model of the universe with little more than adding machine tape.

In this activity, learners make a model of the hot water of a deep sea vent in the cold water of the ocean to learn about one of the ocean's most amazing and bizarre underwater habitats.

This experiment is designed to illustrate how fluids, including water, have the ability to flow.

This is a classic exercise for visualizing the scale of the Solar System.

In this activity, learners will explore how a hydrometer works by building a working model and conducting experiments.