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In this math activity, learners observe and sketch cracking patterns in pavement.

In this activity, learners will create a home for animal friends in their backyard using recycled materials. Some material suggestions include: pine straw and twigs.

Learners trace, cut out and fly a boomerang, outdoors or in a large indoor space.

In this activity, learners use their feet to estimate distances. Learners calculate the distance of one step in centimeters by measuring 10 steps at a time to reduce measurement error.

In this activity, learners use a hand-made protractor to measure angles they find in playground equipment.

You may have tried to throw a curveball or a slider, or even a screwball, with an ordinary baseball and found it difficult to do.

An ordinary camera has a lens that makes an image on film. In a pinhole camera, a small hole replaces the lens.

In this activity, learners will make seed orbs to grow new trees and plants. Learners will explore ecology and life cycles as well as stewardship through this activity.

Use this Moon Map Guide to help learners identify features on the Moon, while looking through a telescope.

In this activity, learners use cheap, thin plastic garbage bags to quickly build a solar hot air balloon. In doing so, learners will explore why hot air rises.

In this activity, one person acts as a human robot while another acts as their developer by programming their actions.

In this activity, learners capture and observe planaria, which are worms that eat tiny pond critters.

This fun and simple hands-on astronomy activity demonstrates the shadow of the Earth as it rises as a dark blue shadow above the eastern horizon.

In this activity, learners explore the physics of impact craters from their own backyard using mud. Learners are encouraged to match features of real impact craters to their models.

In this kinesthetic activity, learners will play a game with a ball to demonstrate the Coriolis force, which partly explains why hurricanes in the Northern Hemisphere rotate counterclockwise.

In this kinesthetic activity that demonstrates pressure, learners act as air molecules in a "container" as defined by a rope.

In this optics activity, learners split white light into all its component colors using three household items: a compact disc, dishwashing liquid, and a hose (outside).

In this activity, learners model a population of deer and see how the number of deer changes over time.

In this activity, learners use cooperation and logical thinking to find solutions to network problems on the playground.

This fun and simple hands-on astronomy activity lets learners make 3-dimensional models of the Earth and Moon.