Tom Clark is a lifelong teacher of mathematics and science with 46 years of experience in education at all levels, from elementary through adult. He has served in the Indiana Department of Education as director of curriculum development, and is a recipient of the IUPUI Chancellor’s Award, the Purdue Chancellor’s Award, and the Purdue School of Science Faculty Teaching Award. Tom is now president of VideoText Interactive, a company that specializes in bringing the textbook to life through technology. The company’s two major programs—Algebra: A Complete Course, and Geometry: A Complete Course—have been acclaimed nationwide as comprehensive college-preparatory mathematics courses. Tom and his wife, Alice, have been married for more 40 years, and have two children and six grandchildren.