David B. Spangler is the recipient of the 2014 Lee E. Yunker Mathematics Leadership Award from the Illinois Council of Teachers of Mathematics. The award honors an Illinois teacher for providing outstanding resources to mathematics teachers.
David has devoted his professional career of more than 40 years to mathematics education. He began as a middle-school mathematics teacher in an individualized setting. Later he taught at Triton Community College, where he gained direct experience interacting with struggling students in a developmental math laboratory. Currently he teaches mathematics methods courses through National-Louis University and ActiveMath Workshops, a professional development company he co-founded in 1994 (activemath.com). Some of the methods courses and workshops he facilitates address special needs students, intervention, computation, and error analysis at the elementary level. David has literally worked with thousands of students and teachers during his career. He has authored several books and has written numerous articles for mathematics journals, such as the popular “Cartoon Corner” for Mathematics Teaching in the Middle School.