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执教者：张堰小学 盛丹红

幻方. 执教者：张堰小学 盛丹红. 15. 15. 15. 15. 15. 15. 15. 15. 4. 4. 8. 2. 2. 8. 6. 6. 9. 9. 3. 7. 1. 1. 7. 3. 6. 8. 8. 6. 4. 2. 4. 2. 9. 5. 1. 3. 5. 7. 1. 5. 9. 7. 5. 3. 4. 4. 8. 2. 2. 8. 6. 6. 9. 9. 3. 7. 1. 1. 7. 3. 6. 8. 8. 6. 4. 2.

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执教者：张堰小学 盛丹红

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  1. 幻方 执教者：张堰小学 盛丹红

  2. 15 15 15 15 15 15 15 15

  3. 4 4 8 2 2 8 6 6 9 9 3 7 1 1 7 3 6 8 8 6 4 2 4 2 9 5 1 3 5 7 1 5 9 7 5 3

  4. 4 4 8 2 2 8 6 6 9 9 3 7 1 1 7 3 6 8 8 6 4 2 4 2 9 5 1 3 5 7 1 5 9 7 5 3

  5. × √ (1) (2) × × (3) (4)

  6. 是幻方吗 5 10 3 4 6 8 9 2 7

  7. 2 3 13 5 11 10 8 9 7 6 12 4 14 15 1

  8. 17 24 1 8 15 23 5 7 14 16 4 6 13 20 22 10 12 19 21 3 11 18 25 2 9

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