David’s work on math differentiation draws on seventeen years of teaching experience in schools spanning the socioeconomic spectrum. He’s particularly interested in the question of how math teachers can create environments that maximally support the growth of extremely diverse learners. His work has been featured in Educational Leadership, ASCD’s Challenging the Whole Child: Reflections on Best Practices in Learning, Teaching, and Leadership, and Making the Difference: Differentiation in International Schools. David has presented on the topic of differentiated instruction at schools and conferences across Africa, Asia, Europe, and the Middle East. He holds degrees in Operations Engineering (M.S.) and Economics (B.A.) from the University of Michigan, and he currently teaches middle school math at the Jakarta Intercultural School.