This is a project that was easy to get ready and the kiddos loved it! I make the materials available for all grade levels except that for kindergarten and 1st grade we did it step-by-step together.
I cut the hair out as a rectangle and showed the kids how to zig-zag cut the hair. Even the kindergartners caught on to this. For K-1 I pre-cut the 8x8 head and the smaller neck square. I always cut the pieces down for the younger kids so they don't waste paper. For older kids I direct them to the scrap box.
I found this idea on pinterest. More examples can be seen on my Facebook community page here: ArtMakesKidsSmart