WGBH
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Speedy Shelter
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In this design challenge activity, learners invent an emergency shelter that can fit a person and is sturdy and quick to build.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-929.jpg?itok=E2NuOkGU)
Blimp Jet Challenge
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In this design challenge activity, learners add a jet-propulsion system (i.e. a balloon) to a blimp so it flies straight and far under its own power.
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Cauldron Bubbles
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In this activity, learners mix up a bubbly brew and examine density. Learners explore how they can make different materials fall and rise in water using oil, water, and salt.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-236.png?itok=37vifWFl)
Potion Commotion
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In this hands-on science experiment, students combine their understanding of the different states of matter and the characteristics of various chemical reactions.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-222.png?itok=fyRY1NC8)
Stack 'Em Up
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In this simple and fun activity, learners build a tower of cups to explore distribution of weight. Learners make predictions about their towers and test their designs.