About the Author

Susan O’Connell 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.
She is the lead author of Math in Practice, a new 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.
John SanGiovanni John SanGiovanni is an elementary mathematics supervisor in Howard County, Maryland, where he oversees mathematics curriculum, digital learning, assessment, and professional development. He is the coauthor of the bestselling Putting the Practices Into Action and the Mastering the Basic Math Facts series. John is an adjunct instructor and coordinator of the Elementary Mathematics Instructional Leader graduate program at McDaniel College, as well as a national consultant for curriculum and professional development. A frequent speaker at national conferences, John also currently serves on the Board of Directors for NCTM.