Investigations in Number, Data, and Space: Grade 1 Unit 6 Addition, Subtraction, and the Number System 3: Number Games and Crayon Puzzles ISBN 9780328237319 0328237310 2008 - Softcover

 
9780328237319: Investigations in Number, Data, and Space: Grade 1 Unit 6 Addition, Subtraction, and the Number System 3: Number Games and Crayon Puzzles ISBN 9780328237319 0328237310 2008