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The Dirt on Dirt
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In this fun gardening activity, learners discover their soil type. There are three basic soil types: sand, silt, and clay.

Highway Seismograph
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This is an activity that models the operation of a seismograph, a tool used to measure the size of earthquakes.

Walking Polygons
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In this activity, learners walk the sides and interior angles of various polygons drawn on the playground. As they do so, learners practice rotating clockwise 180° and 360°.

Jumping to Conclusions
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In this online brain stumper, the bottom half of a series of letters is covered. You may think you know what it says, but remove the black bar to see if you're right.

Blind Spot
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In this activity, learners conduct a simple test to find their blind spot.

Film Canister Farming
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In this hands-on botany activity, learners sprout vegetables in film canisters.

Paper Airplanes
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In this activity, learners explore the properties of paper by constructing and modifying paper airplanes.

Black Magic (Color Chromatography)
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With a coffee filter, a black marker, and a cup of water, discover the secret colors hidden in black ink.

Mold Terrarium: What Grows on Leftover Food?
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This activity shows you how to make a mold terrarium using a jar and leftover food.

How to View a Solar Eclipse
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This is an activity to do when there is a solar eclipse!

Pinhole Magnifier
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In this activity related to light and perception, learners use a pinhole in an index card as a magnifying glass to help their eye focus on a nearby object.

Tiny Pants Photo Challenge
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In this activity, learners use a simple trick of perspective to dress friends in tiny cutout clothing. Learners make tiny pants out of card stock and tape them to the end of a stick.

Finding the Sweet Spot
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In this activity, learners will discover how to find the "sweet spots" on a baseball bat. Whenever an object is struck, it vibrates in response.
Floating Paperclip and Other Surface Tension Experiments
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In this activity, learners experiment with surface tension using everyday household items such as strawberry baskets, paperclips, liquid dish soap, and pepper.

Fog Chamber
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In this weather-related activity, learners make a portable cloud in a bottle.

Experimenting with Naked Eggs
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In this activity about osmosis, learners use a naked egg (one with a dissolved eggshell) to learn about selectively permeable membranes.

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

Thrown For A Curve: Pitch Like A Big Leaguer
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You may have tried to throw a curveball or a slider, or even a screwball, with an ordinary baseball and found it difficult to do.

Breakfast Proteins
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In this activity, learners construct a cereal chain as a model of how proteins are made in the cell.

String Shapes
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In this activity, learners work together to make polygons (many-sided shapes) with string. Learners sit on the floor and hold onto a piece of string slid between their thumbs and index fingers.