Karren Shultz-Ferrell is coauthor of Introduction to Reasoning and Proof (Grades PreK–2, 3–5, and 6–8), part of Heinemann’s Math Process Standards Series. She is an elementary mathematics instructional specialist for Montgomery County Public Schools in Maryland and former classroom teacher. A board representative for the Maryland Council of Teachers of Mathematics, Karren consults with school systems and presents at state, regional, and national conferences.
