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On Target
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In this design challenge activity, learners modify a cup so it can carry a marble down a zip line and also drop it onto a target.

Smooth Operator
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In this activity, learners explore surgical instrument design. Teams of learners construct surgical instruments from everyday materials.

Puppet Power
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In this mechanical engineering activity, learners design shadow puppets with moving parts and use them to tell stories.

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.

Designing a Wall
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In this engineering activity (page 5 of PDF), young learners investigate how materials and design contribute to the strength of a structure, particularly walls.

Jet Propulsion
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In this two-part activity, learners work in pairs to examine the four basic stages of a turbine engine.

Filtration Investigation
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In this activity, learners explore how engineering has developed various means to remove impurities from water.

Levers at Play
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In this activity, learners consider how a simple machine, a lever, turns a small push or pull (a small force) into a larger--or stronger--push or pull (a larger force).
Soda Pop Can Hero Engine
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In this demonstration/activity, water streaming through holes in the bottom of a suspended soda pop can causes the can to rotate.

Twirling in the Breeze
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In this engineering activity, learners build a device (an anemometer) to measure how fast the wind is blowing.

Crank It Up
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In this engineering activity, learners explore simple machines and then build cardboard automata using cams.

Pedal Power
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In this engineering activity, learners examine bicycle mechanics and gear ratios. Learners determine which gears will help them bike a set course in the shortest amount of time.

Egg Bungee Jump
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In this activity, learners design a bungee jump for an egg using nylon stockings.

Rescue Rover
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In this activity, learners explore how rescue devices are designed to aid professionals during emergency situations.

Puff Mobile
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In this engineering activity, challenge learners to design a car using only 3 straws, 4 Lifesavers™, 1 piece of paper, 2 paper clips, tape, and scissors.

Playing with Parachutes
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In this activity, learners explore how parachutes are used to slow down moving objects. Learners work in teams of "engineers" to design and build their own parachutes out of everyday items.

Rubber Band Racers
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In this activity, learners explore the design of rubber band powered cars. Learners work in teams of "engineers" to design and build their own rubber band cars out of everyday items.

How the Rubber Meets the Road
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In this activity, learners explore how engineers design tire treads to increase safety and reliability.

Spring Scale Engineering
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In this activity, learners explore how spring scales work and how they are used for non-exact weight measurement.

Shake it up with Seismographs!
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In this activity, learners explore the engineering behind seismographs and how technology has improved accurate recording of earthquakes.