How to Draw a Hole in Paper: 3D Narrated Trick Art. I would DEFINITLY give the students rulers for this!
Hand Op Art by x-Luna-chan-x.deviantart.com on @deviantART
The Creative Spirit: Op Art Hands That POP!
3D line drawings - great sub lesson idea!
My Animal Drawings Try To Leap Off The Page | Iantha Naicker Sketches for Kate
That is such a cool drawing
drawing between the lines
Time 4 Learning - Optical illusion Drawing on lined paper! :) awww ^_^
Cute Animal Pencil Drawings – Fubiz Media
Pot a crayons fete des peres