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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.

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.

Memory Solitaire
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In this online game, learners practice memory recall. They are shown a collage of pictures for two minutes, then have to write down everything they remember and check how they did.

Straw Oboe: Two lips make sound
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Oboes's unique sound originates from the two small reeds a musician blows into. Make your own double reed instrument out of straw!

Scaling an Atom
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In this activity, learners make a scale model of an atom to see how big or how small an atom is compared to its nucleus. Learners will realize that most of matter is just empty space!

Ambiguous Cube
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In this activity, learners construct a three-dimensional ambiguous cube to explore visual illusions and how our brains interpret or misinterpret information.

Your Sense of Taste: Discover the real taste of candy
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Your tongue can sense about 6 different flavors (salty, sweet, bitter, sour, umami/savory, and fat), but your nose provides a lot more "taste" information than you realize when you eat.

Shell Shifts
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Ocean acidification is a big issue due to the amount of carbon dioxide humans release. CO2 in the atmosphere is absorbed into the ocean thus changing its acidity.

Gel Electrophoresis
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In this activity, learners simulate the process of DNA fingerprinting by using electricity to separate colored dyes.

Clothespin Workout
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This is a great activity about human energy production. Learners will work out with a clothespin to investigate why hockey players jump on a stationary bike after an intense game.

Depth Spinner
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Experience a spinning spiral...you won't be hypnotized, but you'll see what happens when you look away. It's like getting off a merry-go-round and everything keeps moving.

Designer Ears: Make “better” ears!
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Find out what it would be like to have ears shaped differently from your own! Design and make different animal ears then try them out.

Percentage of Oxygen in the Air
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In this activity, learners calculate the percentage of oxygen in the atmosphere by using steel wool's ability to rust.

Cookie Subduction
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This is a quick activity that shows how large amounts of rock and sediment are added to the edge of continents during subduction.

Smell the Maillard Reaction
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In this activity, learners cook amino acids and sugar to explore the range of aromas released.

Scaling Cubes
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In this activity, learners explore scale by using building cubes to see how changing the length, width, and height of a three-dimensional object affects its surface area and its volume.

Hollandaise Sauce: Emulsion at Work
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In this activity, learners follow a recipe to make hollandaise sauce. Learners discover how cooks use egg yolks to blend oil and water together into a smooth mix.

Having a Gas with Cola
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In this activity, learners measure the amount of carbon dioxide in a carbonated drink.

Supercooled Water Drops
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In this activity, learners touch supercooled water drops with an ice crystal and trigger the water drops to freeze instantly.

Pi Graph
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In this activity, learners use a straight line to learn about circles. Learners measure and record the diameter and circumference of different sized cylindrical objects on a chart.