Huh. I'd heard of the AoPS stuff, but never knew much about it. Based on your comment here, I just ordered their "Basic Algebra" set (book + solution manual). I

Huh. I'd heard of the AoPS stuff, but never knew much about it. Based on your comment here, I just ordered their "Basic Algebra" set (book + solution manual). I'll give it a spin and may consider trying other books in their series depending on how it goes. I like the idea of something that presents "high school level" material, but starts introducing the rigor needed for later mathematics. Sounds like something that could be very beneficial.