I was looking for something to create an optical illusion for a group of Webelos Cub Scouts, while we worked on the Webelos Scientist Activity Badge. On achievement #12 it says: "Show in three different ways how your eyes work together, and show what is meant by an optical illusion." All I needed was an optical illusion that the boys could create themselves, to give them an idea of what an optical illusion was, then have them create one and explain how it worked. I came across this idea here: http://www.cometogetherkids.com/2012/03/optical-illusion-handprint.html
. I did it myself and it was fun to do and a really great finished product. I did it with the Webelos Cub Scouts and they loved it too. Be aware that this is a time consuming project, but if you have kids recovering from an illness, or stuck inside on a rainy day, or need a Plan-B to fill time, this might be just the project to keep them busy. So here is how to draw a 3-D Hand Print.