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Hoffman Planetarium
Activity Guide 
Teachers and Students can find a downloadable version of the Hoffman Planetarium Activity Guide.
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FOSS eBook
Pebbles, Sand and Silt Log into FOSSWeb
username: opstudent password: opstudent 
Students investigate pebbles, sand and silt in this Earth Science unit.
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Rock Sorter
Can you sort the the rocks by characteristics?
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Rock On!
Use your knowledge of Earth materials to make your determinations.
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Pebbles, Sand and Silt: A Matching Game
Challenge your opponent to see who is the "Property Chain Ruler"!
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Weathering and Erosion
Learn how the weathering and erosion of rocks by water affects the size of rocks.
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Landforms
Observe the different landforms that occur all around the globe.
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Natural Resources
Learn how we can determine the types of Natural Resources with this BrainPOP interactive game.
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