Carolyn Wheater has been a teacher of elementary through high school mathematics at The Nightingale-Bamford School in New York City for more than 20 years. During her tenure, she has also served as chair of the mathematics department and computer coordinator. Carolyn has also published 14 books on math skills, including Idiot's Guides: Basic Math & Pre-Algebra, Practice Makes Perfect: Algebra, Practice Makes Perfect: Algebra II, Practice Makes Perfect: Geometry, and Practice Makes Perfect: Trigonometry.