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In this design challenge activity, learners use two helium-filled balloons to build a blimp that can travel in a straight path across the room.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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In this design challenge activity, learners build a boat that can hold 25 pennies (or 15 one inch metal washers) for at least ten seconds before sinking.

$1 - $5 per student Ages 8 - 14 30 to 45 minutes