Includes: 10 two-sided self-checking puzzles Activity guide These Simple Addition and Subtraction Puzzles are designed to meet the following key instructional goals: Computing the sum of basic addition facts Computing the difference for basic subtraction facts Developing automaticity (fluency) in addition and subtraction facts Размер огыгщ коробки: 28 см х 21,5 см Размер пазла: 20 см х 20 см.  ArtsCraИздательство: Scholastic, Inc , 2009 г Коробка, 20 стр ISBN 978-0-439-91218-1, 0-439-91218-0 Язык: Английский Цветные иллюстрации.