Educational Studies in Mathematics. 1974;5(4):391-412. doi: 10.1007/bf01420653 Q21.92025
Soviet research on teaching algebra at the lower grades of the elementary school
DOI: 10.1007/bf01420653
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Educational Studies in Mathematics. 1974;5(4):391-412. doi: 10.1007/bf01420653 Q21.92025
DOI: 10.1007/bf01420653
摘要 查看摘要