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Crank It Up
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In this engineering activity, learners explore simple machines and then build cardboard automata using cams.

Hot Spot
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In this activity, learners explore the invisible infrared radiation from an electric heater.

Exploring a Complex Space-Filling Shape
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In this activity, learners build a paper stellated rhombic dodecahedron, a three-dimensional 12-pointed star.

Chemical Change
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In this chemistry activity, learners explore the amount of copper in a new penny. Learners use toilet bowl cleaner to hollow out the interior of a penny with zinc inside.

Forgotten Genius
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This series of chemistry stations is designed to accompany the PBS documentary about African-American chemist "Percy Julian: Forgotten Genius." Each of the six stations features either a chemical or p

Five-Layer Density Column
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In this activity, learners can create five-layer density columns by employing one of three (or all) methods.

Workin' It Out
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In this activity, learners explore how to stay fit the fun way. Learners participate in three physical activities.

Robot Body Language
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In this robotics activity, learners find ways to express emotions and feelings using only body movements, not facial expressions.
Mix and Match
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In this optics activity, learners explore color by examining color dots through colored water and the light of a flashlight.

Single Serving Volcanism
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In this activity, learners eat a snack and make a model of the plumbing system of a volcano.

Invent an Animal
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In this outdoor activity and game, learners explore how animals adapt for survival through coloration, markings and camouflage.

Beginning Statistical Inquiries into the Scientific Method: Jelly-Side-Down
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This activity allows learners to explore the scientific method in an open-ended fashion, using the 4-P Approach to Science Inquiry developed by the University of Wisconsin, Beloit.
The Bent Pencil
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In this optics activity, learners explore how light bends and affects what we see.

The Carbon Cycle and its Role in Climate Change: Activity 3
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In this activity, learners explore the human influences on the carbon cycle and examine how fossil fuels release carbon.

Stride Ruler
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In this activity, learners use their feet to estimate distances. Learners calculate the distance of one step in centimeters by measuring 10 steps at a time to reduce measurement error.

How Big is Small
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In this classic hands-on activity, learners estimate the length of a molecule by floating a fatty acid (oleic acid) on water.

Cup Speaker
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Make your own speaker with a magnet, wire, and paper cup! If you have a radio with a headphone plug and an old pair of headphones, this is a great tinkering activity.

Running in Circles
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In this group activity, learners use some common objects and work together to simulate the Coriolis effect. During the challenge, learners make predictions and test different scenarios.

Transformation of E. coli Using Green Fluorescent Protein
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In this activity related to plant biotechnology, learners transform a strain of E. coli using green fluorescent protein from a bioluminescent jellies.

Leaf Me Alone
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In this activity, learners explore the structure of plant leaves. Learners find out what happens when they coat either the top or bottom sides of leaves with petroleum jelly.