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Gumdrop Dome
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In this activity (located on pages 23-24 of the PDF), learners are introduced to structural engineering and encouraged to practice goal-oriented building.

In the Middle
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In this game-like activity (5th activity on the page), learners explore their auditory acuity as well as the importance of having two ears.

Chew that Gum
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In this quick activity (page 1 of PDF under SciGirls Activity: Exercise and Memory), learners will investigate what happens to bubble gum when it is chewed for 5-10 minutes.

Underwater Fireworks
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In this activity, learners investigate diffusion by creating underwater "fireworks" using food coloring, oil and water.

Bubble Tray
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In this activity, learners use simple materials to create giant bubbles.

Which Powder is It?
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In this chemistry challenge, learners identify an unknown white powder by comparing it with common household powders.

Cartesian Diver
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In this demonstration, learners observe the effects of density and pressure. A "diver" constructed out of a piece of straw and Blu-Tack will bob inside a bottle filled with water.

What's Hiding in the Air?: Acid Rain Activity
As a model of acid rain, learners water plants with three different solutions: water only, vinegar only, vinegar-water mixture.

A Recipe for Air
Learners use M&Ms® (or any other multi-color, equally-sized small candy or pieces) to create a pie graph that expresses the composition of air.

Amazing Marshmallows
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In this demonstration, learners observe the effects of air pressure. They will watch as marshmallows inside a bottle expand as a vacuum pump removes air from the bottle.

Plant Power
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In this chemistry challenge, learners identify which plants have the enzyme "catalase" that breaks hydrogen peroxide into water and oxygen.

Bronx Cheer Bulb
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In this activity, learners observe what happens when they give a light source like a neon glow lamp a "Bronx Cheer." The lights appear to wiggle back and forth and flicker when learners blow air throu

Egg Drop
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In this activity, learners will design a protective package for an egg that will allow the egg to withstand a fall without cracking.

Floating Paper Clip
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In this activity, challenge learners to float a paper clip in a cup of water. Learners discover that a paper clip will sink in a cup of water, except when it is placed on a piece of paper towel.

Morphing Butterfly
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In this activity, learners explore how nanosized structures can create brilliant color.

Cat's Meow
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In this chemistry activity, learners are asked to form a hypothesis about the behavior of milk as household detergents act upon it.

Composite Materials
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This is an activity (located on page 3 of PDF under Hockey Sticks Activity) about composites, materials made of 2 or more different components.

The Pull of the Planets
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In this activity, learners model the gravitational fields of planets on a flexible surface.

Space Stations: Sponge Spool Spine
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In this activity, learners simulate what happens to a human spine in space by making Sponge Spool Spines (alternating sponge pieces and spools threaded on a pipe cleaner).

Views From Windows
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In this activity, learners use their imaginations and picture a scene in their heads.