Inclined plane - A machine that helps us to lift and low things, Lever - This machine has a pivot point, a force and a resistance., Pulley - This machine has a wheel, a rope and a resistor., Wedge - This is like a double Inclined Plane., Wheel And Axle - A machine with which we make things roll., Screw - Is like a Wedge around a stick.,

さんの投稿です

リーダーボード

表示スタイル

オプション

テンプレートを切り替える

自動保存: を復元しますか?