G-d. If my college freshmen came in knowing how to add fractions and understanding the meaning of x^2+y^2 = r^2, they'd do pretty well in precalc or calc. As fa

G-d. If my college freshmen came in knowing how to add fractions and understanding the meaning of x^2+y^2 = r^2, they'd do pretty well in precalc or calc. As far as I can tell many American students learn nothing mathematically between 7th grade and 12th grade, except a big old mental block about math. These kids will be fine with math when it happens.