The present study investigated the effects of individualized instruction on mathematics achievement at the elementary and secondary school levels. The meta-analysis technique developed by Glass was applied to the same sample of studies used by Schoen in his previous voting-method analysis of individualization. The analysis of the 129 effect sizes revealed important trends for the use of self-paced modular instruction in mathematics. This study is also significant in its comparison of the conclusions drawn from a voting-method analysis and Glass’s meta-analysis technique.
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Virginia M. Horak (1981) studied this question.
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