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    In this ocean engineering activity, learners explore buoyancy and water displacement. Then, learners design models of deep sea divers that are neutrally buoyant.

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    In this engineering activity, learners design and build a mechanical arm to lift a small item. Learners must follow certain design constraints as they build an arm that can lift a paper cup from...

    $5 - $10 per group Ages 8 - 14 45 to 60 minutes
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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.

    1 cent - $1 per group Ages 8 - 14 1 to 2 hours
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    In this physical sciences activity, learners explore how passive solar design increases energy efficiency. Learners test paperboard models of different building designs to discover how the design...

    $1 - $5 per group Ages 8 - 14 1 to 2 hours
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    In this physical sciences activity, learners explore insulation. Leaners investigate how insulation can be used to slow down the conduction of heat from one side of a wall to the other. Learners...

    $5 - $10 per group Ages 8 - 14 45 to 60 minutes
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    In this physical sciences activity, learners use science to solve a "crime." Learners collect trace evidence (glitter) and explore its characteristics, such as color, size, shape, and...

    $10 - $20 per group Ages 8 - 14 45 to 60 minutes
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    In this engineering activity, learners explore simple machines and then build cardboard automata using cams. Learners are also challenged to build a complex machine--a moving sculpture that tells a...

    $5 - $10 per group Ages 8 - 14 2 to 4 hours
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    In this activity, learners build penetrometers to test leaf toughness. Biologists measure leaf toughness to study the feeding preferences of insects and bugs.

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    In this physical sciences activity, learners explore friction. Learners investigate the factors that affect the force required to move an object. Learners prepare weighted shoeboxes and then...

    $5 - $10 per group Ages 8 - 14 45 to 60 minutes
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    In this physical sciences activity, learners explore how forensic investigators collect prints from a crime scene. Learners make hand impressions in damp sand and analyze the patterns they observe....

    $5 - $10 per group Ages 8 - 14 45 to 60 minutes