But when you let students work at their own pace -- we see it over and over again -- you see students who took a little bit extra time on one concept or the other, but once they get through that concept, they just race ahead.
i to vidimo iznova i iznova -- vidimo učenike kojima je trebalo malo više vremena na jednom ili drugom konceptu, ali jednom kada su shvatili i savladali taj koncept, jednostavno su ubrzali.