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Are balloons porous or non-porous? In this activity, learners watch an entertaining Mr. O video and conduct a simple experiment to find out.

In this math game, learners try to earn the most points by winning stacks of four dice. Learners practice number recognition and addition skills.

This game for one to four players uses a deck of cards to develop mental addition skills.

In this math activity, learners estimate how many pennies are in a jar by predicting and counting handfuls of pennies.

In this activity, learners build a simple pinhole viewer. They use this apparatus to project images from a variety of light sources, including a candle, the Sun, and the Moon.

This is an activity (located on page 4 of the PDF under What's Nano? Activity) about size and scale.