The Cosmic Perspective: The Solar System, Stargazer 5.0 Access Code Card, Lecture- Tutorials for Introductory Astronomy and Modified . -- for The Cosmic Perspective (7th Edition)

Jeffrey O. Bennett's academic home is the University of Colorado at Boulder, where he has been teaching on and off since 1983 and from which he received his Ph.D. in Astrophysics in 1987. During this time, he's taught more than 50 college courses in subjects including mathematics, astronomy, physics, environmental science, and science education. He began work on Using and Understanding Mathematics because he is particularly interested in helping students overcome difficulties with mathematics. For similar reasons, he has recently completed a textbook for introductory astronomy (The Cosmic Perspective, with M. Donahue, N. Schneider, and G.M. Voit, Addison Wesley Longman, 1999).

He is also working on several books about mathematics and science for the general public. In addition, he is now working on science books for children. Jeff is perhaps best known for his role in creating the Voyage Scale Model Solar System on the National Mall in Washington, DC (opening October 2001); he proposed the project and worked on the team that developed it as a collaborative effort between the Challenger Center for Space Science Education, the Smithsonian Institution, and NASA.

When not working, he enjoys participating in masters swimming and hiking the trails of Boulder, Colorado, with his family.

William L. Briggs has been on the mathematics faculty at the University of Colorado at Denver for 17 years. He teaches throughout the undergraduate and graduate curriculum with a special interest in teaching mathematical modeling as it applies to problems in biology and medicine. He developed the quantitative reasoning course for liberal arts students at CU-Denver supported by the textbook "Usingand Understanding Mathematics," which he co-authored with Jeff Bennett. He has written two other tutorial monographs, "The Multigrid Tutorial" and "The DFT: An Owner's Manual for the Discrete Fourier Transform,"

He is a University of Colorado President's Teaching Scholar, an Outstanding Teacher awardee of the Rocky Mountain Section of the MAA, and the recipient of a Fulbright Fellowship to Ireland. Bill lives with his wife, Julie, his daughter, Katie, and two dogs, Midnight and Seamus, in Boulder, Colorado. He loves to bake bread, as well as run trails and rock climb in the mountains near his home.