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Lift Off!
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This activity (on page 2 of the PDF under SciGirls Activity: Lift Off) is a full inquiry investigation into the engineering challenges of sending scientific sensors into space.

Aviary Architect
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In this activity, learners are challenged to design, build and test a birdhouse that will stay cool in the sun.

Kinetic Sculpture
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In this design challenge activity, learners build a tower that’s at least 12 inches high with two or more parts that move (spin, sway, or flap) in the wind.

Robot Basketball
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In this activity, learners explore accuracy and precision.

Marble Run!
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This activity (on page 2 of the PDF under SciGirls Activity: Luge) is a full inquiry-based challenge related to motion and design optimization.

Move That Lighthouse!
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In this activity, learners explore how engineers work in a team to solve problems.
Shadow Puppets
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If you have lights, cardboard, scissors, and some brass fasteners, you can make shadow puppets! Create a story-telling and design challenge for your learners with this simple and creative activity.

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

Can You Canoe?
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In this activity, learners explore how engineering has impacted the manufacturing of canoes over time, including the development of new, durable, and lighter materials.

Dance Pad Mania
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Make your own "Dance Dance Revolution" dance pad! In this design challenge activity, learners work in teams to build a dance pad that lets you use your feet to sound a buzzer or flash a light.

Zip Line
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In this design challenge activity, learners build a device to carry a Ping-Pong ball from the top of a zip line to the bottom in four seconds (or less!).

Dispenser Designs
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In this activity, learners explore how engineers work in a team to solve problems.

Roller Coasters
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In this activity learners will build roller coasters and test them using small balls or marbles.

Block Bowling
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In this activity learners will build structures out of blocks and then roll balls to try to knock them down.
Happy City
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Make a model city happier with LEDs, circuits, motors, and batteries! Groups can think, discuss, design, and build what would make a community happy. Kids can work as part of a team or on their own.

Pipeline Challenge
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In this activity, learners explore how engineers develop pipeline systems to transport oil, water, gas, and other materials over very long distances.

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.

Water Fountain
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In this activity, learners explore how a hydraulic pump works. Learners work in teams to design and build a unique water fountain that employs a hydraulic pump.

Bridge the Gap
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Learners work in groups to construct bridges using stale marshmallows and toothpicks.

Tennis Anyone?
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In this activity, learners explore sports engineering and advanced materials development.