Build it yourself
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17)
Geology of the Desert Southwest: investigate how the Earth was formed with 15 projects
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18)
Geology of the Great Plains and Mountain West: investigate how the Earth was formed with 15 projects
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22)
Geology of the Eastern Coast: investigate how the Earth was formed with 15 projects
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30)
Native Americans: discover the history and cultures of the first Americans with 15 projects
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43)
Bioengineering: discover how nature inspires human designs with 25 projects
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49)
The Underground Railroad: navigate the journey from slavery to freedom, with 20 projects
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