Gareth Williams received his B. Sc. and Ph.D. from the University of Wales. He has taught at the University of Florida, the University of Denver, and most recently, at Stetson University (DeLand, FL), where he was honored with the McInery Award for Teaching Excellence. His research interests include the role of technology in mathematics education, linear algebra, relativity, applied mathematics, and mathematical modeling. He is also the author of LINEAR ALGEBRA WITH APPLICATIONS, Fourth Edition (Jones and Bartlett, 2001), computer software including THE LINEAR ALGEBRA TOOLBOX FOR MATLAB and MA...