Abstract
Rep. 8). Tallahassee, Florida: Florida State University, Project for the Mathematical Development of Children, 1976. (ERIC Document Reproduction Service No. ED 144 807) Campbell, P. F. Textbook-type pictures and first-grade children's perception of mathematical relationships. Journal for Research in Mathematics Education, 1978, 9, 368-374. Friedman, S. L., & Stevenson, M. B. Developmental changes in the understanding of implied motion in two-dimensional pictures. Child Development, 1975, 46, 773-778. Wheatley, G. H. A motion picture test of Piagetian concepts. Psychology in the Schools, 1975, 12, 21-25.
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