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In this activity, learners can create five-layer density columns by employing one of three (or all) methods.

In this activity related to magnetism and electricity, learners observe as two parallel, current-carrying wires exert forces on each other.

This activity provides instructions for learners to create models of the Earth and then to model a "day" on Earth as well as modeling the seasons.

In this activity related to magnetism and electricity, learners create a magnetic field that's stronger than the Earth's magnetic field.

In this activity, learners build scaled-down structures and cantilevers in a series of "building out" challenges with bamboo skewers and tape.