Singapore Math, Grade 3 : Level 2 A&b, Paperback by Thinking Kids (COR), ISBN 1483813193, ISBN-13 9781483813196, Brand New, Free shipping in the US

<div>Singapore Math creates a deep understanding of each key math concept, is a direct complement to the current textbooks used in Singapore,includes an introduction explaining the Singapore Math method, and includes step-by-step solutions in the answer key.</div>