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Radioactive Decay of Candium
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In this simulation, learners use M&M™ candy to explore radioactive isotope decay.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-416.png?itok=eYN_p0GZ)
Dunking the Planets
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In this demonstration, learners compare the relative sizes and masses of scale models of the planets as represented by fruits and other foods.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-521.jpg?itok=nKgjIAsp)
Build a Coral Polyp
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In this activity, learners build one or more edible coral polyps and place them together to form a colony.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-239.jpg?itok=UPuEH7D3)
Fossil Dig Site
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In this activity (located on page 5 of PDF), learners work in groups to create dig sites for display.
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Sustainable Fishing
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In this activity, learners use a model for how fishing affects marine life populations, and will construct explanations for one of the reasons why fish populations are declining.
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Touch Down
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In this design challenge activity, learners build a shock-absorbing system that will protect two “astronauts” when they land.
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We all Scream for Ice Cream
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In this activity, learners observe how salinity affects the freezing point of water by making and enjoying ice cream.
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Wintergreen
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In this outdoor, winter activity, learners find living green plants under the snow and determine the light and temperature conditions around the plants.