||To make a piece of sandpaper using the materials provided and to
sand a piece of wood.
||To demonstrate the effects of friction.
||Any number of individuals.
||Newspaper; thin piece of cardboard; white glue; dry sand; small
block of wood.
||You have 30 minutes to make a piece of sandpaper with the materials
||Sand down a rough board with the sandpaper you've made.
||You have one minute to sand a rough board. The piece that is judged
the smoothest, wins.
||Youth Science Foundation Science Olympics Manual.