Beth McCord Kobett, EdD, is Professor of Education and Associate Dean at Stevenson University, where she leads, teaches and supports early childhood, elementary, and middle preservice teachers in mathematics education. She is a former classroom teacher, elementary mathematics specialist, adjunct professor, and university supervisor. Beth also served as the Director of the First Year Seminar program at Stevenson University. She recently completed a three-year term as an elected Board Member for the National Council of Teachers of Mathematics and was the former president of the Association of Maryland Mathematics Teacher Educators (AMMTE).  Beth leads professional learning efforts in mathematics education both regionally and nationally.  Beth is a recipient of the Mathematics Educator of the Year Award from the Maryland Council of Teachers of Mathematics (MCTM) and the Johns Hopkins University Distinguished Alumni Award. Beth also received Stevenson University’s Rose Dawson Award for Excellence in Teaching as both an adjunct and full-time faculty member. Beth believes in fostering a strengths-based community with her students and strives to make her learning space inviting, facilitate lessons that spark curiosity and innovation, and cultivate positive productive struggle. Karen S. Karp is a professor in the School of Education at Johns Hopkins University. Previously, she was a professor of mathematics education in the Department of Early and Elementary Childhood Education at the University of Louisville, where she received the President’s Distinguished Teaching Award and the Distinguished Service Award for a Career of Service. She is a former member of the board of directors of the National Council of Teachers of Mathematics (NCTM) and a former president of the Association of Mathematics Teacher Educators (AMTE). She is a member of the author panel for the What Works Clearinghouse Practice Guide on assisting elementary school students who have difficulty learning mathematics for the U.S. Department of Education Institute of Educational Sciences. She is the author or coauthor of approximately 20 book chapters, 50 articles, and 30 books, including Elementary and Middle School Mathematics: Teaching Developmentally, Developing Essential Understanding of Addition and Subtraction for Teaching Mathematics, and Inspiring Girls to Think Mathematically. She holds teaching certifications in elementary education, secondary mathematics, and K–12 special education.