Why colleges must change how they teach calculus

Math departments fail too many calculus students and do not adequately prepare those they pass. That is the message heard from engineering colleges across the country. Calculus has often been viewed as a tool for screening who should be allowed into engineering programs. But it appears to be failing in that regard, too. That is, it is preventing students who should be proceeding from going on, and it is letting students through who do not have the mathematical preparation that they need.