The comments about Professor Suppes crack me up. Our DS rather enjoyed him and found him to be erudite. And, most of his "lectures" are 30 seconds or less. He would much rather hear Professpr Suppes lecture than me!

In comparison, we looked at the Art of Problem Solving videos for similar subjects. for DS's twin sister The AOPS courses would be great for her as she is a visual learner who needs to be entertained. DS needs a lot less interaction; perhaps that is why he was able to so easily digest Prof, Suppes. We are signing DD up this Spring for AOPS classes as it fits her style. As far as DS, he is staying with EPGY. While both of them have distinctly different learning styles, they have similar math aptitudes.