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Metal Reactions
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This is written as a static display, but can easily be adapted to a hands-on experiment for learners to conduct.

Algae in Excess
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Plants need nutrients to grow. This is why we apply fertilizers to grass and food crops. In this activity, learners will explore how fertilizers can affect lakes and other bodies of water.
Bee Talk
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In this activity, learners smell bottles containing bee pheromone molecules (or herb/spice extracts as a substitute). Bees release these molecules to send messages to each other.

The Missing Link
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In this activity, learners collect, analyze, and interpret information about objects in order to classify them into a cladogram. Use this activity to talk about how scientists classify things.

Straining Out the Dirt
Learners take on the role of environmental engineers as they design water filters.

Building a Basic Series Circuit
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This activity was designed for blind learners, but all types of learners can use it to build and examine a basic electrical circuit.

Bicycle-Wheel Gyro
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In this activity, a spinning bicycle wheel resists efforts to tilt it and point the axle in a new direction.

Fragile Waters
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In this activity (on pages 18-29) learners explore the impact of the March 24, 1989 oil spill in Alaska caused by the Exxon Valdez tanker.

Spherical Reflections
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In this art meets science activity, learners pack silver, ball-shaped ornaments in a single layer in a box to create an array of spherical reflectors.

Water Body Salinities II
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In this activity, learners discuss the different salinities of oceans, rivers and estuaries.

Toxic Popcorn Design Challenge
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In this activity, learners explore the engineering design process (EDP)—the process engineers use to solve design challenges.

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).

Odors Aloft
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Learners smell balloons filled with different scents to guess what's inside. From this, they infer the presence and motion of scented molecules.

Nano Ice Cream
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In this activity/demo, learners discover how liquid nitrogen cools a creamy mixture at such a rapid rate that it precipitates super fine grained (nano) ice cream.

The Liquid Rainbow
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Learners are challenged to discover the relative densities of colored liquids to create a rainbow pattern in a test tube.

Rearing Monarchs
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As a long-term project, you can rear monarch butterflies at home or in a classroom.

Positive Planning Adds Up
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In this drawing/mapping activity, learners design plots of land while incorporating positive strategies for improving water quality.

Instant Ice Cream
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In this activity, learners make instant ice cream without using a freezer.

Our Chemical Senses: Olfaction
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In this activity, learners investigate the olfactory system by conducting several experiments.