Isbn: 9787542715470 (1 results)

paperback. Condition: New. Paperback Pages Number: 140 This series is written by math enthusiasts. according to mathematical classification method from the third grade to sixth grade are divided into four. The contents of each book Deep and language easy to understand. more difficult to understand the contents. together with the chart illustrates. and analysis of examples. the reader as soon as possible to learn new knowledge. Book exercises. from easy to difficult. is conducive to cultivating students' interest in mat.…