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In this activity, learners explore how engineers have developed big wheels or Ferris wheels.

$5 - $10 per group Ages 8 - 18 1 to 2 hours
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Learners work in groups to construct bridges using stale marshmallows and toothpicks.

$5 - $10 per group Ages 11 - 14 30 to 45 minutes
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This activity (on page 3 of the PDF under GPS: Sailboat Design Activity) is a full inquiry investigation into design optimization.

$5 - $10 per group Ages 8 - 14 2 to 4 hours