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Pasnak, Robert; And Others – Education and Training in Mental Retardation and Developmental Disabilities, 1995
Twenty-two children (ages 5-8) with mild mental retardation who received learning set instruction on unidimensional classification and seriation improved on these precursors to concrete operations; 22 children who received more conventional instruction did not. Improvement on classification and seriation was accompanied by improvement on measures…
Descriptors: Academic Achievement, Classification, Instructional Effectiveness, Mild Mental Retardation