Adding it up : helping children learn mathematics /
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| Other Authors: | , , |
| Format: | Book |
| Language: | English |
| Published: |
Washington, DC :
National Academy Press,
[2001]
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| Subjects: |
| Physical Description: | xvii, 454 pages : illustrations ; 27 cm. |
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| Bibliography: | Includes bibliographical references and index. |
| ISBN: | 0309069955 (hardcover) |