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In this design challenge, learners will engineer a structure and see if it can survive an earthquake they create.

In this activity, learners explore how the area of Arctic sea ice has changed over recent years. First, learners graph the area of Arctic sea ice over time from 1979 to 2007.

This activity has three story puzzles learners can solve to learn about life in the Arctic.

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

In this activity about problem-solving, learners build a house for the Three Little Pigs using twenty straws and two index cards.

Learners draw comic-style pictures to show the water cycle. From a starting picture, one learner draws what happens to the water in the next panel, then passes the comic strip to another learner.

In this activity, learners construct a traditional handicraft toy that illustrates a motion commonly associated with violins and earthquakes.

In this activity, learners create their own icons for a forecast-at-a-glance poster for their classroom/learning space.

In this family or group activity, learners create a nature journal by visiting a local nature center or backyard, observing creatures in their natural habitats, and sketching what they see.

In this activity, learners design and build a simple wind vane —one of the oldest kinds of weather tools— and use it to show wind direction.

In this activity, learners thread colored beads onto string. Each beach represent a process of the water cycle.