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In this activity, learners will discover how our universe is continuously expanding.

This is a guide for facilitating interaction at a touch tank with marine animals. The instructions are for setting up a display in an informal science center, but could work anywhere.

En esta actividad, los aprendices harán un terrario usando materiales simples.

In this activity, learners will engineer their own weather vane. This activity includes step-by-step instructions with pictures and a "What's Happening?" section explaining how the activity worked.

In this three part activity, learners explore and experiment with shadows to learn about the Sun's relative motion in the sky.

In this activity (located on page 3 of the PDF), learners investigate the way water moves and how we can control and direct water.

In this activity, learners will make a model rocket to test the phrase "what goes up must come down." Learners will power their rockets with air pressure, and soon discover the effects of air resistan

“Exploring the Universe: Imagining Life” is a hands-on activity in which visitors imagine and draw an extreme environment beyond Earth, then invent a living thing that could thrive in it.

In this activity, learners create a map of a hidden surface using a "sounding stick" -- a technique similar to how underwater maps were once made.

In this activity, learners will turn an ordinary tray of sand into a desk-top garden for meditation.

In this activity, learners use maps to locate the Northwest Coastal region.

This activity models the way Landsat satellites use a thermal infrared sensor to measure land surface temperatures.

“Exploring Earth: Bear’s Shadow” is a hands-on activity designed primarily for young visitors and their families. Participants move a flashlight around an object to make and experiment with shadows.

In this two-part activity, learners explore the Earth and Sun's positions in relation to the constellations of the ecliptic with a small model.

In this activity, learners examine ways that Native Americans of the Southwest express their relationship with nature through art.

This lesson familiarizes learners with the term "tropical belt." First, learners locate the equator, Tropic of Cancer and Tropic of Capricorn on a map and trace these lines with a crayon.

In this activity, learners will experiment with different materials that can melt and change ice.

This activity models some of the ways natural processes, such as erosion and sediment pollution, affect Earth’s landscape.

This activity attempts to clear up the common misconception that deserts are always hot, totally dry, and uninhabitable.

This activity encourages visitors to build an electroscope—a simplified version of one of the tools scientists use to study the invisible forces on Earth and in space.