Using Similarities and Differences: A Meta-Analysis of Its Effects and Emergent Patterns

McREL’s recent study on the effectiveness of using similarities and differences, one of the nine Classroom Instruction That Works strategies, appeared in the April issue of this peer-reviewed journal. Conducted by Helen Apthorp, Charles Igel, and Ceri Dean, the study updates the original meta-analytic findings to include research from the last decade, which confirmed the effectiveness of facilitating student comparison, classification, use of analogies, and use of metaphors.

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