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In this activity, young learners use different-sized paper 'caterpillars' and various household items to predict and measure their height.

In this math activity, learners pretend there is a special store that lets you pay for toys by their height in pennies.

In this activity, learners work in pairs to measure each other's ankles with lengths of string.

In this activity, learners make an astrolabe, a device used for measuring altitude, including the height of objects in the sky.

In this math activity, learners trace their hands and estimate the number of beans that can fit into their hand tracings. Then, learners glue the beans to the tracing to test out their estimations.

The demonstration/experiment provides quick proof that air has mass.

In this activity, learners "go fishing," then practice ruler use and size/pattern comparison with the animals they catch.

In this activity, learners will construct a measuring device (snake "string") to improve their observation skills.

In this quick activity, learners drink Avogadro's number worth of molecules - 6.02x10^23 molecules!

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

In this activity, learners will make their own prism and use a glass of water to separate sunlight into different colors.