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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.

Comparing Crystals
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In this chemistry activity (page 3 of the PDF), learners will learn about crystals by growing their very own.

Soda Pop Cave
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In this geology activity (page 6 of the PDF), learners explore how carbonic acid can slowly dissolve limestone and form caves.

An Apple as Planet Earth
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In this environmental education demonstration (page 6 of the PDF), learners will see a tangible representation of the scarcity of soil resources on earth.
Why is the Sky Blue?
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In this activity, learners create a "mini sky" in a glass of water in a dark room.

Pepper Scatter
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In this quick activity, learners break the tension that happens when water develops a "skin." Learners use water, pepper and some soap to discover the wonders of surface tension—the force that attract

Inverted Bottles
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In this activity, learners investigate convection by using food coloring and water of different temperatures.

Dancing Cereal
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In this quick activity (on page 2 of the PDF under GPS: Body Electricity Activity), learners will observe how dry breakfast cereal appears to dance when it gets close to a balloon charged with static

Why is the Sky Blue?
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In this activity, learners use a flashlight, a glass of water, and some milk to examine why the sky is blue and sunsets are red.

Freezing Lakes
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In some parts of the world, lakes freeze during winter. In this activity learners will explore water’s unique properties of freezing and melting, and how these relate to density and temperature.

Lifting Lemon
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In this physics demonstration, learners will be surprised when a lemon slice appears to magically levitate within a pint glass.

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.

Jiggly Jupiter
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In this activity, learners build edible models of Jupiter and Earth to compare their sizes and illustrate the planets' internal layers.
How Does Water Climb a Tree?
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In this activity, learners conduct an experiment to explore how water flows up from a tree's roots to its leafy crown.

Making Regolith
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This lesson will helps learners answer the question: How does the bombardment of micrometeoroids make regolith on the moon?

What's in the Water?: Biotic and Abiotic Elements in Aquatic Ecosystems
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In this investigation learners explore the differences between, and interdependence of, living and nonliving elements in a water ecosystem.

Let's Make Molecules
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In this activity, learners use gumdrops and toothpicks to model the composition and molecular structure of three greenhouse gases: carbon dioxide (CO2), water vapor (H2O) and methane (CH4).

How Boulders Are Born
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In this activity, learners review and discuss weathering, erosion and mass wasting, to gain a stronger understanding of how Hickory Run’s Boulder Field was formed after the Laurentide Continental Glac

What's So Special about Water: Solubility and Density
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In this activity about water solubility and density, learners use critical thinking skills to determine why water can dissolve some things and not others.

Cartesian Diver
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In this quick activity (page 1 of the PDF under SciGirls Activity: California Fish), learners will build a simple Cartesian Diver in an empty 2-liter bottle.