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In this activity, learners will use Google Sky to observe features of the night sky and share their observations.

In this activity, learners explore the different salinities of various sources of water by taste-testing.

In this activity, learners working in pairs saturate a cotton ball using water drops from an eyedropper to demonstrate the high water capacity of clouds.

In this activity, learners experiment with shadows and light sources to understand the relationship between the angle illumination and the shadow's length.

Space telescopes can offer us better, clearer views of the universe (and of our own planet) than Earth-based telescopes can, but getting these large, delicate pieces of equipment into orbit is tricky.

In this activity, learners observe what would happen to their bodies if they went to outer space without a space suit.

In this activity, learners make their own "tornado" using two soda bottles and water.

In this physics activity, learners build their own rockets out of film canisters and construction paper.

In this activity (on page 8), learners model how marble statues and buildings are affected by acid rain.

In this activity on page 4 of the PDF (Water in Our World), learners conduct some quick and easy tests to determine the differences between water and other liquids that look very similar to water.

In this activity, learners will see how UV light affects colors over time by making their own sunprint on construction paper.

In this activity (located on page 10 of the PDF), learners explore the properties of spraying and dripping water, while making art.

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.

This fun and simple hands-on astronomy activity lets learners explore the difference between telescope magnification and resolution.

In this game, learners cutout a model black hole "cone" and attempt to roll around a marble or other small spherical object without touching the event horizon.

In this activity (on page 5 of PDF), learners use dry ice and household materials to make scientifically accurate models of comets.

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

Coins are everyday objects which tell a lot about the people who use them.

In this activity, young learners explore the basic shapes of constellations by making their own scope out of a cardboard tube and paper with pinpricks.

In this activity, learners investigate soil erosion. Learners set up a simulation to observe how water can change the land and move nutrients from one place to another.