The Teaching of Elementary Calculus Using the Nonstandard Analysis Approach Author(s): Kathleen Sullivan Source: The American Mathematical Monthly, Vol. 83, No. 5 (May, 1976), pp. 370-375 Published by: Mathematical Association of America Stable URL: http://www.jstor.org/stable/2318657 . Accessed: 10/03/2014 11:41 Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at . http://www.jstor.org/page/info/about/policies/terms.jsp . JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact
[email protected]. Mathematical Association of America is collaborating with JSTOR to digitize, preserve and extend access to The American Mathematical Monthly. http://www.jstor.org This content downloaded from 132.70.4.118 on Mon, 10 Mar 2014 11:41:19 AM All use subject to JSTOR Terms and Conditions MATHEMATICAL EDUCATION EDITED BY PAUL T. MIELKE AND SHIRLEY HILL Materialfor this Department should be sentto Paul T. Mielke,Department of Mathematics, Wabash College, Crawfordsville,IN 47933, or to ShirleyHill, Departmentof Mathematics,University of Missouri,Kansas City,MO 64110. PEAKS, RIDGE, PASSES, VALLEY AND PITS A Slide Study of f(x,y)=Ax2+By2 CLIFF LONG The adventof computer graphics is makingit possible to payheed to thesuggestion, "a pictureis wortha thousandwords." As studentsand teachers of mathematics we shouldbecome more aware of thevariational approach to certainmathematical concepts, and considerpresenting these concepts througha sequenceof computergenerated pictures.