Materials:
Per pair of students: a magnet, a cup of water, a cork, a needle.
Directions:
Write the following instructions on the board:
1. Rub a magnet 50 times across a needle, always in the same direction.
2. Cut a piece of cork, so you can have a small circle.
3. Push the needle through the cork, from one end of the circle to the other. Label the cork N, S, E and W (the needle should go from S to N)
4. Put the cork and needle in a cup of water.
5. Place the compass on the table and watch what happens!
(The needle should move and point to the nearest magnetic pole-either north or south.)
Divide the class into pairs and distribute materials.
Read the instructions with the class. Demonstrate each step. Students follow the instructions and make the compass.
Pairs write a route in their notebooks to follow: Walk five steps north and then 20 steps east.
Two pairs exchange routes and use their compasses to follow them.