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In this activity, learners will build a simple electromagnet. They will test variables that would make the electromagnet stronger.

In this activity, high voltage is applied across a pickle to emit a yellow glow. This activity should only be conducted by skilled adults and is best suited as a demonstration.

In this design challenge activity, learners invent a device that will make their friends and family ask, "What's buzzing?" Learners design an alarm with an on/off switch that is small enough to hide.

In this activity (26th on the page), learners construct an easy-to-build device and test motor learning.

In this activity about electricity, learners identify closed and open circuits. First, learners examine and label diagrams of open and closed circuits.