Step 1 :
Get an index card or Paper (a 3 by 5card works best but you can use any rectangular index card or even paper).
Step 2 :
Fold the card or paper in half and unfold
Step 3:
Cut about half way down the crease that you folded.
Step 4 :
Now cut about 1/3 through the paper laterally a little below your first cut from the long edge.
Step 5 :
Fold both of the sections you made in step 4 in like these pictures
Step 6 :
Fold the cuts you made in step 1 in opposite directions on either side, forward and backward. Than add a paperclip on the very bottom of the helicopter and you're done! Your helicopter should look like the picture in the introduction.
Drop from your hand from as high a place you can and watch it spin as it falls
