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A Comparison of Biologic Content in Three Elementary-School Science Curriculum Projects: ESS, S-APA, SCIS

Ronald D. Simpson
The American Biology Teacher
Vol. 36, No. 6 (Sep., 1974), pp. 340-343
DOI: 10.2307/4444832
Stable URL: http://www.jstor.org/stable/4444832
Page Count: 4
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A Comparison of Biologic Content in Three Elementary-School Science Curriculum Projects: ESS, S-APA, SCIS
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