The second in a series; Part I appeared in the May 1970 issue
Intellectual Development Beyond Elementary School II: Ratio, A Survey*
Version of Record online: 17 MAR 2010
1970 School Science and Mathematics Association
School Science and Mathematics
Volume 70, Issue 9, pages 813–820, December 1970
How to Cite
Karplus, R. and Peterson, R. W. (1970), Intellectual Development Beyond Elementary School II: Ratio, A Survey. School Science and Mathematics, 70: 813–820. doi: 10.1111/j.1949-8594.1970.tb09821.x
- Issue online: 17 MAR 2010
- Version of Record online: 17 MAR 2010
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