There is a great lesson about 3D and 2D shapes at http://www.essaykings.me/dissertation-help/. The teacher is explaining the difference there with the help of the strange device which he calls "d-checker". I think it would be interesting for your class to try it.
There is a great lesson about 3D and 2D shapes at http://www.essaykings.me/dissertation-help/. The teacher is explaining the difference there with the help of the strange device which he calls "d-checker". I think it would be interesting for your class to try it.
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