Sketchup

Sketchup is 3D and can be used in a geometry class

Videos

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 * [|www.shareaec.com/v/37056/Tutorials/Using-Sketchup-with-Google-Eart]
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 * [|www.google.com/educators/p_sketchup_discovery.html] -- Using Sketchup and Discovery Education

Lessons

 * [|www.wikihow.com/Use-Google-Sketchup]
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