Abstract
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References
1.
1
John W. Renner
, et al. Research, Teaching, and Learning uith the Piaget Model . University of Oklahoma Press : Norman, Oklahoma , 1976 , p. 117 -117 .
2.
2 Ibid., p . 101.
3.
3 Ibid ., p. l1.
4.
4 Ibid ., p. 112.
5.
5
Robert B. Sund
. Piaget for Educators: A Multimedia Program . Charles E. Merrill Publishing Company , Columbus, Ohio , 1976 , p. 165 -165 .