This book prepares teachers with the theoretical basis, practical knowledge, and expertise to use the powerful mathematical tool called the Rekenrek (also known as the arithmetic rack or number rack). Building on the idea that students must be able to “see” numbers within other numbers (e.g., 7 might be thought of as “5 and 2 more”), Learning to Think Mathematically with the Rekenrek helps students recognize number combinations of 5 and 10, develop a rich sense of numbers between 0 and 20, and build a strong set of intuitive strategies for addition and subtraction with single- and double-digit numbers.

Originally published in 2008 by Cloudbreak Publishing, Inc., Boulder, Colorado (ISBN 978-1-60702-483-5).