Optical Illusions! 9 different optical illusions for students to try their hand at practicing. Each on it's own worksheet with a step-by-step and then a practice area at the bottom. I have also included a template for a 3D cube and a Flextangle - I like to have students draw optical illusions on these and then assemble as a final project. Great in pencil, colored pencil and thin sharpies/markers. Can be used as a lesson alone or as intro/practice before the real and final project, bell ringers, sub plans, virtual learning, etc. 
 
See version #2 for additional (and more difficult) illusions to draw!