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Give Me a Brake!

Bike brake

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Build a Bobsled Racer

bobsled on track Teams of students in grades 3 to 8 learn about friction, forces, and the engineering design process by building and testing miniature bobsleds to see which can race down an icy slope either the fastest or slowest.

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Lesson: Hovercraft Racers

Hover Baloon ActivityUnderstanding how friction works helps engineers design moving objects so they can be controlled. In this activity, students in grades 7 – 9 gain first-hand experience on how friction affects motion by building a hovercraft that uses air from a balloon to levitate a craft made from a compact disc (CD).

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Class Activity: Build a Roller Coaster

In this activity, late-elementary school students work in small groups to build a roller coaster with at least one loop and one jump, demonstrating how potential energy transforms into kinetic energy. Students observe the relationship of height to potential energy and the resulting kinetic energy.

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