Andy Clark is a former elementary and junior high school teacher. He recently
retired as the K–12 Math Coordinator for Portland Public Schools, an urban
district that outperformed the state of Oregon and closed the achievement
gap. Clark is coauthor of a number of math programs, including Every Day
Counts®: Calendar Math (Pre-K–6), Algebra Readiness (6 & Up), Partner
Games (K–6), and Math in Focus (K–8).