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In this design challenge activity, learners build a shock-absorbing system that will protect two “astronauts” when they land.

In this activity, leaners will observe the process of natural selection on a population of birds called 'Springbeaks' over four seasons of breeding on an isolated environment called 'Clippy Island.' L

In this two-part activity, learners map a navigation plan to get from Earth to Mars and back. In activity one, learners represent the orbital paths of Earth through dance and dramatic movement.

In this activity, learners simulate the behavior of the atmosphere.

In this activity, learners explore how wind tunnels provide feedback to engineers about the performance and durability of products such as planes, cars, and buildings.

This game plays a dozen different sounds, altered to simulate what they would sound like if you had hearing loss.

In this activity, Christina Elson, an archaeologist from the American Museum of Natural History, guides learners as they investigate an "artifact" and record their observations in a field journal.

In this activity, learners simulate Otto von Guericke's famous Magdeburg Hemispheres experiment.

This activity (on page 2 of the PDF under SciGirls Activity: Earthquakes) is a full inquiry investigation into aerial imagery.

In this activity (page 5 of the PDF), learners will create a food web and explore food sources for different organisms. They will identify relationships between organisms in an ecosystem.

April showers bring May flowers, but what do coastal storms bring?

In this activity, learners will model the mechanical weathering and erosion of rocks in a stream or river.

In this activity, learners work in groups to design a parachute out of household items that keeps an egg secure when dropped from a certain height.

Students design and build their own parachutes in this hands-on engineering project.

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.

This simple and engaging astronomy activity explains nuclear fusion and how radiation is generated by stars, using marshmallows as a model.

In this simulation activity, learners will raise a pack of wolves under ten different conditions: without human interference and with human interference.

In this engineering activity, learners design their own board games.

In this activity, learners will train to improve lung, heart, and other muscle endurance as they walk a progressive, measured distance.

Learners create three solutions with different levels of salinity. They compare the density of these solutions by coloring them and layering them in a clear plastic cup and in a soda bottle.