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Screaming Balloon
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In this quick activity (page 1 of the PDF under SciGirls Activity: Extreme Sounds) about sound vibrations, learners will investigate which small objects, such as coins, hex nuts, or marbles, produce t

Build Your Own Robot Arm
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In this lesson, learners develop a robot arm using common materials. Learners explore design, construction, and teamwork, as well as materials selection and use.

Waterproof Hanky
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In this physics demonstration, learners will be surprised when a handkerchief holds water in an upside-down glass.

Iridescent Art
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This is a quick activity (on page 2 of the PDF under Butterfly Wings Activity) that illustrates how nanoscale structures, so small they're practically invisible, can produce visible/colorful effects.

Super Spinner
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In this activity (page 1 of PDF under SciGirls Activity: Pet Handedness), learners will construct a simple spinning top out of a circle of construction paper, a film canister lid, and a bamboo skewer.

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.

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.

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

How Far?
To learn how friction affects motion, learners build a measurement tool from a rubber band and other simple materials.

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.

Glowing in the Dark
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In this activity, learners explore phosphorescence and how certain materials can absorb and store energy from a light source.

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

Perching Parrot
Learners explore the concepts of equilibrium and center of mass by seeing how non-symmetrical objects balance.

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.

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