PINWHEEL WIND
COLLECTOR 
MATERIALS:
- pin
- scissors
- sharpened pencil with eraser
- square piece of construction paper (about 8.5" x 8.5")
PROCESS:
Lay the square piece of paper flat on a table and draw a line diagonally from each corner to the opposite corner.
Mark the center of the square where the two lines cross and punch a small hole through it with the pencil tip.
Cut along each line stopping about an inch from the hole in the center of the square.
Take the pin and punch a hole in the top left corner of each of the four flaps. (No two holes should be next to each other.)
Pick up a flap at each punched corner and carefully curve it over toward the center hole, securing it with the pin. Repeat this for the other flaps.
When all four flaps are held by the pin, carefully lift the paper without letting the flaps unfurl.
Lay the pencil flat on a table and push the point of the pin into the side of the eraser.
EXPLANATION:
Now your pinwheel is complete! Pick up the pinwheel near the pencil point and let it catch the wind. You will notice that the pinwheel only spins when the wind hits its center.
