Margaret Betts began her teaching career in 2007 as a first-grade teacher for the Easthampton Public School District in Easthampton, MA, where she is currently a K–5 Instructional Coach. In 2013, she helped transform her school’s 21st Century After School Program (EEASP) by using the Math Practices as the driving curriculum framework for after school enrichment. Margaret was a recipient of the 2021 Pioneer Valley Excellent in Teaching Award. She is passionate about helping children and adult learners understand the complexity, beauty, and joy of our number system. Before becoming a teacher, Margaret was a lawyer with the Office of the Public Defender in Baltimore, Maryland.