Instructional units on time and money vere presented to 249 educable and trainable level mentally retarded children. Pretesting shoved that Ss had a poorer understanding of time and money'concepts than 229 Aonretarded controls of the same MA. Significant performanc&increases from pretest to posttest resulted in the retardates' posttest scores being above control Ss', and in some cases, approaching the level of their CA peers. (Author /CL)
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Thurlow et al. (1977) studied this question.
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