Susan O'Connell has decades of experience supporting teachers in making sense of mathematics and effectively shifting how they teach. As a former elementary teacher, reading specialist, and math coach, Sue knows what it's like in the classroom and her background is evident throughout her work as she unpacks best practices in a clear, practical, and upbeat way. Sue is the lead author of the new Math by the Book series, a K-5 resource connecting math and children's literature. She is also the lead author of Math in Practice, a grade-by-grade K-5 professional learning resource. She is also coauthor of the bestselling Putting the Practices Into Action, Mastering the Basic Math Facts in Addition and Subtraction, and Mastering the Basic Math Facts in Multiplication and Division. She served as editor of Heinemann's popular Math Process Standards series and also wrote the bestselling Now I Get It. Sue is a nationally known speaker and education consultant who directs Quality Teacher Development, an organization committed to providing outstanding math professional development for schools and districts across the country. Watch an introductory Math in Practice webinar, hosted by Sue. Click here to watch Sue talk about the links between reading and math. Connect with Sue on Twitter: @SueOConnellMath

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.

Brenda Hammond is a coauthor of Introduction to Reasoning and Proof (Grades PreK - 2 and 3 - 5), part of Heinemann's Math Process Standards Series. A staff development teacher in Montgomery County, Maryland, she has taught for more than thirty years at the elementary and university levels. She has been a presenter at national conferences, a mathematics consultant, and the author of First Word Problems (2003). Brenda is a recipient the Presidential Award for Excellence in Mathematics Teaching.

Josepha Robles is a coauthor of Introduction to Reasoning and Proof (Grades PreK - 2 and 3 - 5), part of Heinemann's Math Process Standards Series. She has taught for more than twenty-five years in public and private schools. She is a math content coach in Montgomery County, Maryland, a math consultant in the private sector, and a published author who has presented at NCTM national, regional and state conferences.