Learn how to make an anemometer

Materials:

• 5 small paper cups

• A hole punch

• Tape

How to build it:

1. Use the hole punch to make 4 holes in a cup as in picture A.

2. Put two straws through the holes in the cup. They should cross in a ‘X’. (PICTURES B-C-D)

3. Make a hole in the side of each of the 4 paper cups.

4. Insert the ends of the straws into the holes of the other cups and tape them into place. Make sure the cups are all facing the same direction. (PICTURE E)

5. Take a pencil (you can use a straw too) and make a hole in the bottom of the center cup (PICTURE F-G-H-I)