Can You See the Elephant?

This is a drawing that I did of an elephant in blue colored pencil with warm-colored patterns over the top; so, when you view the picture with red cellophane glasses you can easily find the elephant. I used repeated patterns to make the elephant even harder to see. This would be very interesting to use in the classroom to teach children about color blindness and show how some people see certain colors as all one shade. It could also be used in math as a counting project, such as count the number of triangles, count the number of red triangles, count the number of yellow circles, and many others.