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Fun Fruit: Advanced
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This math challenge, played with two players or a whole group, engages your problem solving skills.

Shape Stamping
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In this activity, learners will explore two-dimensional shapes that are found in three-dimensional shapes. Learners will explore geometry, design, color and tool use through this activity.

Lava Lamp
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In this activity, learners will create their own lava lamps. Learners will explore density, effervescence and chemistry through this activity.

Persistence of Vision
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If you had a long tube with a 5 millimeter wide slit, would you see the entire Golden Gate Bridge?

Diving Submarine
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Learners use a commercially available toy to experiment with density. They fill a chamber in the toy submarine with baking powder and release it into a tank of water.

Catapult
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In this activity about transfer of energy, learners get to build their own catapult using nothing more than a plastic spoon and some tape.

Chain Reaction II
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In this hands-on activity, learners use an assortment of (mainly household) items to complete Rube Goldberg-type challenges.

The Desert Blooms!
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This activity attempts to clear up the common misconception that deserts are always hot, totally dry, and uninhabitable.

Under Pressure
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In this simple activity, learners discover how a mere piece of paper can be used to hold up the weight of a heavy book.

Tempest in a Teacup
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In this hands-on activity, learners determine the types of chemical reactions achieved when combining different household products.

Ocean Echolocation
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Use echolocation to find others and experience how whales’ senses have adapted to suit their environment. In pairs, learners are blindfolded and use containers filled with marbles to find each other.

Acids & Bases
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In this activity, learners test the pH of safe liquids available at home by creating a pH indicator from mashed blueberries.
Piece It Together: Puzzle Hunt
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In this activity, learners follow clues to find five puzzle pieces, then assemble them. This activity works well with a whole group, individuals, or families.

Finger Knitting
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In this activity, learners will learn how to knit using only their hands. Learners will explore patterns and fabrication as well as develop fine motor skills and patience through this activity.

Magnetic Shielding: Magnetic lines stop here
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Testing magnets is always a fun pastime, but here, we're going beyond "will it attract the magnet?" In this activity, learners will investigate which materials allow magnetic fields to pass through or

Opti-Top
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In this activity, learners will create an optical illusion top. Learners will explore color mixing, physics and design through this activity.

Hieroglyph Holiday
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In this activity about archaeology, learners will explore different Egyptian hieroglyphs and recognize their meanings and uses.

Hidden Rainbow
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In this math puzzle, one player hides a rainbow of four colors while another player tries to guess the hidden rainbow colors in the correct order.

Tactile Double Trouble
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In this activity (11th activity on the page), learners use their sense of touch to identify matching pairs of objects hidden in bags. Learners can also play this game with partners.

Clay Bridges
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In this activity, learners make bridges using an oil-based modeling clay (plasticene). The instructions include discussion questions for both before and after bridge building.