> This bicycle has hand brakes---one for the front wheel and one for the > rear wheel. To stop, the rider squeezes the levers on the handle bars. Slow down! There's a busy street ahead. Stop your...
Rubbings
Materials ■ coins - crayons - paper (thin) - scissors 1. Place a coin on a flat surface. Place a piece of thin paper on top of the coin. Hold the paper in place with one hand and rub the side ...
