Over and Back is a software program designed to explore the concept of average rate. It is used in Chapter 14 of Part II of Reconceptualizing Mathematics. The activities and exercises used here were adapted from those written by Dr. Helen Doerr and Preety Nigam from Syracuse University, and revised by Dr. Janet Bowers and Dr. Joanne Lobato from San Diego State University.  Dr. Bowers designed, programmed, and implemented this version of Over & Back, based on the original version by Dr. Patrick Thompson.


Click here to begin using this software.