Examining a wide variety of materials (paper cups, craft sticks, tissue paper, plastic grocery bags, felt, aluminum foil, copy paper, wax paper, and coffee stirrers), first graders designed their own sails to glide along a track. They experimented not only with the type of materials, but also with the size and shape. The end goal...reach the end of the track as quickly as possible! If mechanical engineers design parts of machines that move, then they need to know which materials can catch wind energy the best!
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Mrs. BrinzaNo ifs, ands, or buts about it. I love what I do. Useful Links
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