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 [...]

End behavior of polynomials

 Posted by on January 26, 2013  No Responses »
Jan 262013

Here is a PowerPoint I use when introducing end-behavior of polynomial functions. For each slide everyone raises arms or lowers arms to indicate the end-behavior of the polynomial. The left arm indicates what happens to as and the right arm indicates what happens to as . So, for example, for  you would put both arms up, while [...]