Developing Number Concepts, Book 2: Addition and Subtraction, Vol. 2 » (1st Edition)

Written by a top-selling author, Developing Number Concepts offers creative, independent, and small-group activities for building number concepts and operations skills with young children. This revised and expanded edition updates activities by including the use of other manipulatives such as Snap "TM" Cubes, color tiles, two-color counters, and teddy bear counters in addition to Unifix "RM" Cubes. The new edition also provides questions to guide observation, and offers more information on assessment.