A survey of proportional reasoning and control of variables in seven countries
- 作者Robert Karplus; Elizabeth Karplus; Marina Formisano; Albert-Christian Paulsen
- 卷第14卷
- 期第5期
- 印刷ISSN0022-4308
- 电子ISSN1098-2736
- 文件大小452.85KB
- 发表时间1977
- DOI10.1002/tea.3660140504
- 页码411-417
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