Offers instructions for creating simple machines using levers, wheels, and pulleys to conduct experiments that demonstrate such concepts as energy, force, and friction.Wheel and axle What you need Colored cardboard Stiff cardboard Four round sponges Scissors Wooden sticks Tape ... Wheels are good for moving objects because their round shape reduces the area of contact between surfaces and so reduces friction. ... STEER CLEAR ai1 Ask an adult to cut out a steering JL wheel and two car shapes from colored cardboard, as shown, ... Leave spaces for the wheels, but make sure you leave flaps hanging from the back wheel arches, as shown.
|Title||:||Forces & Simple Machines|
|Publisher||:||The Rosen Publishing Group - 2008-01-01|