Mar 192015
 
Fresh eyes on end behavior of rational functions

Over the past few years of teaching precalculus regularly, I've experimented with a variety of approaches to rational functions in an attempt to find one that will result in students discovering and eventually truly understanding how the equation of a rational function determines its graph. I have never felt very successful. Too many students get confused somewhere along the way, come to [...]

Jul 232011
 
Practice finding the equation of a line

In order to begin learning to use JSXGraph (which also requires that I learn javascript) I created an application in which a line is randomly generated and the user enters what she thinks the equation is. Her equation is then graphed for comparison with the original. Particularly helpful to me in developing this were Dr. Carol [...]