Instructions (be sure to print this out!):
1. Open the Friction Science Kit, and pull out the black construction paper. Cut this paper into the shape of a spider.
2. Take the small white box from the kit and open it. Remove the string and small stick from the inside of the box. Use a sharp pencil to poke a hole in both ends (the short sides) of the box.
3. Run the string through the hole in one end of the box and out the other.
4. Use scissors and a ruler to trim ¼ inch off the stick.
5. Place the stick in the box. Be sure to put it underneath the thread. Place the stick so that it is perpendicular to the string and held up and in place by the opposite sides of the box.
6. Tape your spider cutout to the flat side of the box.
Now let's perform the experiment. Pick up your spider contraption by both ends of the string. Hold the string vertically so the spider slides down the string. What happened? If your spider stopped sliding, good job! Release the tension on the string and the spider will start to slide again. When you pull on either end of the string, it increases the friction on the stick inside the box, which slows and stops the spider.