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In this design challenge, learners use their creativity and imagination to design and test a wildlife crossing for their favorite animal.

In this outdoor activity and bingo-like game, learners explore why and how seeds spread far from the plants that produce them.

Some aquatic organisms live in open water, while some live in soil at the bottom of a body of water.

In this activity, learners listen to a story and tell a story of their own as they learn about the importance of elders in Native American cultures.

In this activity, learners will explore reptile biology by taking temperature readings in various places and comparing them.

In this collecting/comparing activity, learners work with samples of sand from different places like a lakefront, river, or ocean beach.

The goal of this activity is to design, build and test a house or toy for an animal.

In this activity, learners will discover what colors are in different markers, and may be surprised at the results.

In this activity, learners make homemade journals featuring seashell rubbings. First, learners transfer the texture of a seashell onto a piece of paper using a crayon.

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

In this hands-on activity, learners will become familiar with the special adaptations of rainforest plants and discover the conditions needed for tropical trees to survive along with what can impinge

In this outdoor activity, learners discover that plants aren't just shoots (stem, branches, leaves, and flowers) growing above ground, but contain plenty of roots growing underground—more than half th

In this activity (located on page 2), learners will construct tiny model geysers out of film canisters, warm water, and antacid seltzer tablets.

In this activity, learners will engineer three different parachutes to test how well each one works.

In this outdoor activity, learners discover how the environment around a building affects the growth of plants.

In this activity (page 1 of PDF under SciGirls Activity: Forecasting), learners will construct an air cannon by cutting a hole in the bottom of a bucket and stretching a garbage bag over the other end

In this yummy activity about soil (page 9 of PDF), learners will create layers of soil using food. They will learn about the composition and role of each layer.

This is an activity about discovering the colors and beauty of nature. Learners will spend time outdoors, matching paint chip samples, colored paper, or colors of clothing to those found in nature.

In this activity, learners explore the Great Plains.

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