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In this activity, learners investigate the formation of craters. Learners will examine how the size, angle and speed of a meteorite's impact affects the properties of craters.

Ancient trash tells archaeologists a lot about the past. In this activity, learners take a close look inside their trash can and think about the clues it offers about their lives.

In this activity (on pages 22-24 of the PDF), learners match extreme enviroments with life forms they support.

In this science/art activity, learners create an insignia or emblem for a planet exploration mission.

This fun and simple hands-on astronomy activity lets learners build a scale model of the universe with little more than adding machine tape.

In this archaeology-related activity, learners build their own time capsule and choose a storage location and a date to reopen it.

In this activity, learners will create a diagram of the ocean zones and determine what organisms live in each zone.

In this activity, learners will build ramps and test how the laws of physics apply do different objects. Learners will explore physics and cause and effect through this activity.

In this activity, learners construct models of plants that are adapted to living under specific environmental conditions.

This PDF contains 12 calendars (12 months). Each month contains activities about math. Things to do on familiar holidays (like July 4), less common holidays (like Backward Day), and any day.

In this outdoor, windy day activity, learners "fly" and race leaves along a line to discover which types of leaves catch the most wind. Which leaves are the best fliers? Why?

In this activity, learners build models of comets, using edible materials, to learn about comets' structure.

In this weather activity (page 4 of the PDF), learners will explore the water cycle through an interactive game.

In this outdoor activity, learners become beachcombers as they walk on a sandy beach in search of evidence of life.

This is a classic exercise for visualizing the scale of the Solar System.

In this sunny day, outdoor activity, learners observe changes in shadows over time. The activity also helps to develop a sense of the Earth's motion.

In this design challenge, learners design a storm drain cover that catches litter to protect waterways to learn about how local actions can have system-level effects.

In this group activity, learners will explore the characteristics, functions and uniqueness of the mangrove tree.

This hands-on astronomy activity lets learners hunt for different objects in the night sky that contribute to stellar and planetary formation, using a Treasure List.

In this family or group activity, learners conduct a chromatography experiment to reveal the colors that leaves "hide" under their green pigments.