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Hold a Hill
Source Institutions
In this outdoor activity, learners investigate the relationship between the slope of a trail and soil erosion.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-260.png?itok=s49hGWL9)
Making Regolith
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This lesson will helps learners answer the question: How does the bombardment of micrometeoroids make regolith on the moon?
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-765.jpg?itok=rKoFGTIl)
Don't Stop for Hitchhikers
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In this activity, learners role-play the part of lake inhabitants and the aquatic exotics who displace the native species.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-673.jpg?itok=XpIDWKhF)
Mass, Area, Volume
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In this activity (page 18 of PDF), learners will measure the volume of impact craters created by projectiles of different masses.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-779.jpg?itok=2gtZWZAU)
Who Dirtied The Water?
Source Institutions
In this activity, learners receive a labeled plastic film canister containing a material representing a pollutant (i.e. pencil shavings = a beaver's wood chips).
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Shapes and Angles
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In this activity (page 7 of PDF), learners will identify the general two-dimensional geometric shape of the uppermost cross section of an impact crater.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-227.png?itok=H8LSNDr4)
OBIS Oil Spill
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In this outdoor activity, learners simulate an oil spill using popcorn (both oil and popcorn float on water), and estimate the spill's impact on the environment.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-409.gif?itok=sKwBwR0O)
Catch a Wave: How Waves are Formed
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In this three-part activity, learners explore how waves are formed and why some waves are bigger than others. First, learners observe waves of water in a pan generated by an electric fan.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-407.png?itok=NxG01sIV)
Stream Table
Source Institutions
In this activity, learners use aluminum trays and wooden blocks to form stream tables to investigate river formations in two different landscape scenarios.