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Using Solar Energy
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In this activity, learners discover how solar energy can be used to heat water.

Test Density with a Supersaturated Solution
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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.

Edible Earth
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In this activity, learners make a model of the solid Earth's layers that's good enough to eat! Learners use tasty foodstuffs to simulate Earth's inner core, outer core, mantle, and crust.

Make a DNA Model
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In this activity, learners make a 3-D model of DNA using paper and toothpicks. While constructing this model, learners will explore the composition and structure of DNA.

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

Mint Your Own Coin
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Coins are everyday objects which tell a lot about the people who use them.

Create a Compass
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In this activity, learners use simple materials to build their own compass.

Locating a Point
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In this activity, learners work in teams to simulate the process used by Global Positioning Systems (GPS) to determine the location of a fallen meteorite in Antarctica.

Buried Bones
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In this activity, pairs of learners will create two make-believe dig sites by burying chicken bones in plaster of Paris--a powder that hardens when wet.

Sinking Water
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In this experiment, learners float colored ice cubes in hot and cold water.

Lava Layers
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In this activity (on pages 11-12 of PDF) learners create models of lava layers that have formed on the moon.

Grow Rock Candy
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Learners grow sugar crystals (rock candy). They make a hot solution that has an excess of sugar dissolved in it, then as the solution cools, they see sugar crystals form.

Describing Oak Leaves
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Learners work in teams to investigate how scientists use physical characteristics to classify living things.

Stargazing
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In this nighttime, outdoor activity, learners keep a record of what they see in the sky by drawing constellations, the Moon, and making note of the weather and conditions each day.

Smaller Than You Think
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Learners compare a life-size drawing of a Tyrannosaurus rex head and a full-size Sinornithosaurus body to understand that dinosaurs varied in size.

Horse Gaits Flipbooks
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In this activity, learners explore the gait of horses by constructing flipbooks with British photographer Eadweard Muybridge's famous photographs.

Mapping the Classroom
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In this activity, learners discover the importance of maps and scale as they work together to create a map of the classroom.

What's the Angle?
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This activity helps learners understand how the angle of the Sun affects temperatures around the globe.
Flesh Out a Fossil
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In this activity, learners discover how artists start with a skeleton and turn it into a realistic drawing of a dinosaur.

Evolution in Action: Isolation and Speciation in the Lower Congo River
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In this guided discussion activity, learners watch a video about Central Africa's Lower Congo River, one of the most biologically diverse rivers in the world.