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Bubble Tray
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In this activity, learners use simple materials to create giant bubbles.
Buzzing Bee
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In this activity, learners explore sound by constructing an instrument toy that buzzes when you swing it.
Mystery Jars: Make Your Own: Estimating and Counting
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Learners make a counting/estimating jar to exchange with friends or bring home.
Build a Raft
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In this activity, learners explore density and buoyancy as they design and construct rafts.
Estimation
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In this online activity, learners will explore size estimation in one, two and three dimensions. Multiple levels of difficulty allow for progressive skill improvement.
Make a Salt Volcano (Lava Lite)
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This activity about density provides instructions for making a miniature "lava lite" with just salt, oil, water, and food coloring.
Water, Water Everywhere
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In this activity, learners estimate how much water they think can be found in various locations on the Earth in all its states (solid, liquid, and gas) to discover the different water ratios in the Ea