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| Congruence | 1 |
| Instruction | 1 |
| Mathematical Concepts | 1 |
| Mathematics | 1 |
| Mathematics Instruction | 1 |
| Modern Mathematics | 1 |
| Number Concepts | 1 |
| Number Systems | 1 |
| Secondary School Mathematics | 1 |
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| Mathematics Teacher | 1 |
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Peer reviewedSowell, Katye Oliver; McGuffey, Jon Phillip – Mathematics Teacher, 1971
Descriptors: Congruence, Instruction, Mathematical Concepts, Mathematics
