To wrap up our science unit on motion (and for fun) this week we made mini sleds.  Children had a wide assortment of recyclables along with materials like craft sticks and pipe cleaners and tape.  Encouraged to use their imaginations and have fun, children came up with some very creative designs.  Several had enclosed compartments so the passengers would stay warm, some had plows on the front, and we tested sleds on a cardboard ramp and made observations about the way they moved.  We noticed the taller sleds tended to tip over and roll, sleds with smooth plastic bottoms slid down smoothly, and one sled  moved so slowly down the ramp we decided to call it the slug sled.  We concluded that this was because the tape on the bottom of it was creating friction and slowing it down.