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How Does Water Climb a Tree?
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In this activity, learners conduct an experiment to explore how water flows up from a tree's roots to its leafy crown.

Evolution in Plane Sight
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In this activity, learners model directed evolution by making paper fly. Learners construct and fly paper airplanes.

Bones
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In this health activity (page 5 of the PDF), learners will explore a unique connection betweeen the bones of the body.

Wash This Way
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In this activity on page 4 of the PDF, learners investigate the importance of washing their hands.

Extreme Lifestyles
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In this matching game, learners study the limits of life on Earth to see what other places in the solar system might sustain microbial life.

Animal Scent
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This activity (on page 3 of the PDF under GPS: Animal Scent Activity) is a full inquiry investigation into animal behavior.

Water: Clearly Unique!
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In this activity on page 4 of the PDF (Water in Our World), learners conduct some quick and easy tests to determine the differences between water and other liquids that look very similar to water.

Tabloid Science
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In this activity, learners analyze a fictionalized report of life on Mars, based on a real NASA satellite photo, and explore how to separate scientific fact from fiction.

Target Recognition and Synapse Formation During Development
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In this activity about neuron/target muscle recognition (page 44 of the PDF), learners arranged in two rows facing away from each other use string to simulate neural development.

Experiencing Parallax With Your Thumb
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In this activity, learners investigate parallax, a method used to measure distances to stars and planets in the solar system.

Fuel for Living Things
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In this activity, learners observe what happens when yeast cells are provided with a source of food (sugar). Red cabbage "juice" will serve as an indicator for the presence of carbon dioxide.

Coupled Resonant Pendulums
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In this activity, learners discover that two pendulums suspended from a common support will swing back and forth in intriguing patterns, if the support allows the motion of one pendulum to influence t

Neural Network Signals
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In this activity, learners create an electrical circuit and investigate how some dissolved substances conduct electricity.

Spill Spread
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In this simulation, learners explore how ocean currents spread all kinds of pollution—including oil spills, sewage, pesticides and factory waste—far beyond where the pollution originates.

Measuring and Protecting Skin
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In this activity, learners compare and contrast their own skin (including the area covered) with that of an orange.

Exploring at the Nanoscale
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This lesson focuses on how nanotechnology has impacted our society and how engineers have learned to explore the world at the nanoscale.

Motor Bird
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In this activity, learners build a bird that flies in place with help from a motor, wire, and some straws.

Earth Attractions
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In this activity, learners build and test a compass. Learners work in pairs and pretend they are stuck in the wilderness at night.

Paddle Boat
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In this activity, learners build an old-fashioned paddle boat out of simple materials.

Above Water: Buoyancy & Displacement
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In an investigation called "Shape It!" learners craft tiny boats out of clay, set them afloat on water and then add weight loads to them, in order to explore: how objects stay afloat in water; what th