Marvin Bittinger taught math at the university level for more than thirty-eight years. Most of that time, he taught at Indiana University Purdue University Indianapolis where he is now Professor Emeritus of mathematics education. Professor Bittinger has authored textbooks on topics ranging from basic mathematics, to algebra and trigonometry, to applied calculus. He received his BA in mathematics from Manchester College and his PhD in mathematics education from Purdue University. Special honors include Distinguished Visiting Professor at the United States Air Force Academy and his election to the Manchester College Board of Trustees from 1992 to 1999. Professor Bittinger has also had the privilege of speaking at many mathematics conventions, most recently giving a lecture entitled "Baseball and Mathematics." His hobbies include hiking in Utah, baseball, golf, and bowling. In addition, he also has an interest in philosophy and theology, particularly in apologetics. Professor Bittinger currently lives in Carmel, Indiana with his wife Elaine. He has two sons and four granddaughters.

Judy Beecher has a BA in mathematics from Indiana University and a MA in mathematics from Purdue University. She has taught at both the high school and college levels, with many years of developmental math and precalculus teaching experience at Indiana University Purdue University Indianapolis. In addition to her career in textbook publishing, she spends time traveling, enjoying her five grandchildren, and promoting charity projects.

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