Artigo
Revisado por pares
Addition and subtraction on the soroban
1965; National Council of Teachers of Mathematics; Volume: 58; Issue: 7 Linguagem: Inglês
10.5951/mt.58.7.0608
ISSN2330-0582
Autores ResumoTeachers of pupils who see well and teachers of visually handicapped pupils can all learn from this discussion
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