I think I figured out where I saw it - the author of Life of Fred books says something along those lines on his website.

I'm wondering if that is why he has the "pre-algebra + biology" and "pre-algebra + economics" books now, in order to slow the progression toward algebra?

Does anyone have any experience with either of these two pre-algebra books.

And just what the heck is pre-algebra technically? I guess I better start studying our school's curriculum again.

Cat