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Learners work in groups to design and build a tower out of balsa wood. As a motivator, they can compete to build a tower with the highest strength-to-weight ratio.

$5 - $10 per group Ages 11 - 14 1 to 2 hours
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In this engineering activity, learners design and build a mechanical arm to lift a small item.

$5 - $10 per group Ages 8 - 14 45 to 60 minutes
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In this activity, learners explore the engineering design process (EDP)—the process engineers use to solve design challenges.

$5 - $10 per group Ages 8 - 18 1 to 2 hours
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In this activity, learners explore the history, design and motion of spinning tops. Learners work in teams of "engineers" to design and build their own tops out of everyday items.

$10 - $20 per group Ages 8 - 18 1 to 2 hours
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In this engineering activity, learners test the stability of towers they build out of cups, discovering that structures with more mass in the base are more stable.

1 cent - $1 per student Ages 8 - 14 10 to 30 minutes
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In this engineering activity, learners design parachutes to give toy figures safe landings. This activity is great for practicing an important STEM skill--changing only one variable at a time.

$5 - $10 per group Ages 8 - 14 30 to 45 minutes
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Learners explore the concepts of equilibrium and center of mass by seeing how non-symmetrical objects balance.

1 cent - $1 per student Ages 11 - 18 10 to 30 minutes
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Learners investigate how drag affects the falling rate of objects.

1 cent - $1 per group Ages 11 - 14 45 to 60 minutes
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In this activity, learners build bridges and cantilevers in a series of "building out" challenges with straws and pins.

$1 - $5 per group Ages 4 - 14 1 to 2 hours
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The goal of this activity is to build a miniature bobsled that is either the fastest or the slowest. Learners use recycled materials to design, build, and test their bobsled on a bobsled track.

$5 - $10 per group Ages 6 - 18 10 to 30 minutes
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In this activity, learners build scaled-down structures and cantilevers in a series of "building out" challenges with bamboo skewers and tape.

$5 - $10 per group Ages 6 - 14 2 to 4 hours
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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.

Over $20 per group Ages 8 - 14 1 to 7 days
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In this activity, learners build large-scale structures and cantilevers in a series of "building out" challenges with garden poles and tape.

$10 - $20 per group Ages 6 - 14 2 to 4 hours