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How will an earthquake, simulated by shaking, affect a "building" made of linked squares? How can the square "stories" be cross-braced to prevent the "walls" from collapsing? What dangers are there in building above a garage?

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The Electric Wind Generator activity uses recyclable materials to explore how the power of wind can generate clean, renewable energy. Using a fan and small hobby motor to light up LEDs, students experiment with designing efficient windmill blades. The activity can be used as part of a global challenge curriculum exploring clean, renewable energy and can address several NGSS topics such as forces, energy, natural sources, and human impact on Earth systems. Students practice valuable engineering skills as well.

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Use alka-seltzer to create a reaction that builds up pressure in a film canister. Have a blast with this gas-powered flyer.

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Use alka-seltzer to create a reaction that builds up pressure in a film canister. Have a blast with this gas-powered flyer.

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The floating compass is a useful tool for detecting the magnetic fields of magnets and of the Earth. Make a simple compass with a magnetized needle demonstrates the properties of magnetic materials and shows that magnets have north and south poles. Using the floating compass provides a visual example of how like poles repel each other.

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The floating compass is a useful tool for detecting the magnetic fields of magnets and of the Earth. Make a simple compass with a magnetized needle demonstrates the properties of magnetic materials and shows that magnets have north and south poles. Using the floating compass provides a visual example of how like poles repel each other.

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This simple yet effective activity provides a practical method for teaching students how to find and label the magnetic poles on a magnet, identify magnetic materials, understand the difference between geographic and magnetic poles.

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This simple yet effective activity provides a practical method for teaching students how to find and label the magnetic poles on a magnet, identify magnetic materials, understand the difference between geographic and magnetic poles.

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Build a simple structure on the shake table, start the motor, and watch the action! Will your building design survive the "earthquake"?

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Hypothesize, experiment, collect data and analyze forces and motion with a straw “rocket” and an easily made launcher. The stronger the force, the farther and higher the rocket flies!

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Hypothesize, experiment, collect data and analyze forces and motion with a straw “rocket” and an easily made launcher. The stronger the force, the farther and higher the rocket flies!

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Create and decorate a "critter" whose moves are powered by sunlight. To vary the critter's movements explore making changes to the swinging "proboscis."

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Students learn how to measure biodiversity in terms of species richness (the number of species living in a particular area) by sampling "species" in a simulated ecosystem and graphing and analyzing data.

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Use this enhanced pinwheel to measure the mechanical energy that can be obtained from moving air.

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Use this enhanced pinwheel to measure the mechanical energy that can be obtained from moving air.