1. Building instructions for pin wheel

2. Assembly Instructions
- Cut 2 pieces of thread > 40cm (allow for knots.)
- Cut straw in half. Place around shaft.
- tape the thread between the 2 pieces of straw.
- place a push pin through each corner and the center of pinwheel.
- carefully push the pin into the center of the shaft.

3. Measure twice , Cut Once!! 4 Blade pin wheel
On the smaller file cover with a pencil draw a square 15cm x 15cm
Draw the diagonal lines from corner to corner to find find the center.
Cut in from the corners 2/3 of the way .
Use push pins to make a hole in the corners and the
center.
3 Blade pin wheel
On a larger file cover with a pencil draw an equilateral triangle with a base of 22.8 cm
Find the midpoint of each side and draw a line from
the midpoint to the opposite apex.
-Mark the center where the three lines intersect.
- Cut from the apex 2/3 of the way to the center.
- Poke the corners and center with a pin.
22.8 cm
Write your names on each pinwheel.