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In this activity, learners make "solar cookies," edible models of the Sun's outer layers using sugar cookies and toppings.

Many people get water from a source deep underground, called groundwater.

In this activity, learners build one or more edible coral polyps and place them together to form a colony.

In this activity (located on page 5 of PDF), learners work in groups to create dig sites for display.

This fun and simple hands-on astronomy activity lets learners experiment with marbles and weights to discover some basics about gravity and black holes.

In this activity, learners build large-scale structures and cantilevers in a series of "building out" challenges with garden poles and tape.

In this activity, learners sort different natural phenomena into categories (they occur on Earth, on the Moon, or on both), and then model how energy moves during a quake using spring toys.

The Let's Do Chemistry "Build a Battery" activity lets participants learn how batteries work and how materials behave, change, and interact by building their own simple battery out of metal and felt w

An estuary is a body of water that is created when freshwater from rivers and streams flows into the saltwater of an ocean.

In this activity, learners create volcanoes like those they have examined on Earth and Mars through images taken by spacecraft.

Where rainwater goes after the rain stops? And why there are rivers and lakes in some parts of the land but not in others?

In this activity, learners investigate what happens when you build up static electricity on plastic balls.

This fun and simple hands-on astronomy activity lets learners imagine what would happen if our Sun were replaced with a black hole.