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In this activity, learners consider the water features they might enjoy at a community park--a pond, brook, water playground (or "sprayground"), or pool--and what happens to the water over time.

In this water activity, learners discover ways to move water across the water table.

In this activity, learners work in groups to build simple solar stills filled with salt water. After the stills are complete, learners observe what happens when they place the stills in the sun.

In this activity, learners use sieves with different-sized holes to sort balls by size.

In this activity, learners build water-propelled engines from soft drink cans.

In this activity, learners conduct three experiments to examine temperature, the different stages of the water cycle, and how convection creates wind.

Learners design, build, and test models of "dragon boats" made from up to three milk cartons.

No glue is needed for learners of any age to become marshmallow architects or engineers.

In this activity, learners explore atoms as the smallest building blocks of matter. With adult help, learners start by dividing play dough in half, over and over again.

In this activity, learners try pouring water out of a regular cup and a miniature cup. It’s harder than it sounds! Learners discover that different forces dominate at different size scales.

Learners make their own paper using old newspaper. Learners can make their paper colorful by adding construction paper.

In this Bob the Builder(TM)-themed activity, learners explore what it means to work together as a team.

Learners explore soybeans, soak them in water to remove their coat, and then split them open to look inside. They also make a musical shaker out of paper cups, a cardboard tube, and soybeans.

In this outdoor activity, learners explore UV rays from the Sun and ways to protect against these potentially harmful rays.