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Cleaning with Dirt
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Learners build a filter from old soda bottles and dirt. They create polluted water, and pour it through their filter to clean it.
Trading Places: Redox Reactions
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Visitors add drops of copper sulfate solution onto a steel nail. They observe the nail change color from silver to brown as the copper plates onto the nail.
Matraca
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In this activity, learners create a traditional Mexican noisemaker (a matraca) using cardboard, craft sticks, and a wooden dowel.
Forwards and Backwards: pH and Indicators
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Visitors prepare six solutions combining vinegar and ammonia that range incrementally from acid (all vinegar) to base (all ammonia).
Animal House
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The goal of this activity is to design, build and test a house or toy for an animal.
The Carbon Cycle and its Role in Climate Change: Activity 3
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In this activity, learners explore the human influences on the carbon cycle and examine how fossil fuels release carbon.
Helping Hand
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In this invention challenge activity, learners see how many objects they can grab with a homemade "bionic" arm.
Do Cities Affect the Weather?
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In this activity, learners explore clouds and how they form.
Get a Leg Up
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In this activity, learners experiment and collect data during a simulation of the fluid shifts experienced by astronauts' bodies in microgravity.
Lever Cowboy
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In this activity, learners build a figure that moves and "comes to life" when they pull its string.
Eye Spy
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This fun activity uses simple materials such as milk cartons and mirrors to introduce the ideas of optics and visual perception.
You Can't Take It With You
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This activity models the necessary balance of creating power and cleaning up its associated waste. Learners participate in a game where they attempt to move forward toward a goal.
As Straight as a Pole
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In this engineering activity (page 3 of PDF), young learners investigate how a pole can be made stable by “planting” its base in the ground or adding supports to the base.
Yeast Balloons
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Visitors observe a bottle with a balloon attached around the mouth. The bottle contains a solution of yeast, sugar, and water.
Mapping Sea Level Rise
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In this activity related to climate change, learners create and explore topographical maps as a means of studying sea level rise.
Make a Terrarium
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In this activity, learners make a miniature greenhouse or "terrarium" to explore the greenhouse effect.
A Degrading Experience
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In this activity on page 27, learners perform an experiment to learn about how different types of marine debris degrade and how weather and sunlight affect the rate of degradation.
Bark Beetle Infestation Investigation: Estimation and Pheromones
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This activity investigates how bark beetles can threaten forests by having learners estimate the number of infected trees from a photo.
Evolution in Plane Sight
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In this activity, learners model directed evolution by making paper fly. Learners construct and fly paper airplanes.
Living Clocks
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In this activity about daily rhythms (on page 17 of the PDF), learners will explore circadian patterns in humans, animals and plants.