Abstract
Windcars are the suitable teaching materials. Through production of windcars, the makers can contact with some mechanical elements and understand basic mechanical sysgtems. and can include various ideas. Windcars are producted by materials which discharged by everday life, such as paper milk vessels, pettbottle, wire hungers and so on. And the power to act on a wind car were mesured by scale which is manufacturing by same materials with windcars.
