Some of your High school students may not even see the illusion
created. Work with them step by step and let the ones who get
it go ahead without you. I have a beautiful, intelligent wife of 41
years who still gets frustrated with me when I use the terms
like: parallel, diagonal, perpendicular, etc. Some brains are just
wired differently. Against my supervisors wishes, I taught linear
perspective to fifth graders. I knew some were ready, and they
were. The ones that got it ran away with it. Hang in there.
Woody, Retired in Albuquerque