| Medvirkende
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| Omfang
| vii, 171 sider : illustrasjoner
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| Opplysninger
| Discovering rules for odds and evens -- Finding relationships in addition and subtraction -- Reordering terms and factors -- Expanding the number system -- Doing and undoing, staying the same -- Multiplying in clumps -- Exploring rules for factors -- The world of arithmetic from different points of view.
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| Emner
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| Dewey
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| ISBN
| 1873539355. - 9780873539357. - 9780873539494 (ebook). - 9781873539354
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