EMS

Two gallon-sized paint cans–one made out of clear plastic and the other metal– are side by side on a table. Behind them, two youths are seated at the table. Together they place a handheld, hand crank radio with a long antenna into the plastic paint can.

Radio Explorers: Radio Silence

Learners compare and contrast how a variety of materials can block radio waves.

A family looks at an image through a blue filter

Exploring the Universe: Filtered Light

In this activity, learners discover how colored filters can help reveal more about an image and we can use light and filters to learn more about an object.