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The long-term distributional impacts of a full-year interleaving math program in Nigeria

This study reports the findings from a year-long randomized evaluation assessing the impact of assigning 62 classrooms in Nigeria to receive either blocked or interleaved math problem sets. Blocked practice sessions focused on a single skill at a time. Interleaved problem sets alternated between different skills within a practice session. On tests of short-term retention, interleaved practice increased test scores by 0.29 standard deviations. In contrast, we find no evidence that interleaving improves average performance on a cumulative assessment measuring retention of material over the academic year. We find some evidence of large impacts on the cumulative assessment at the bottom of the distribution, but these impacts appear to be offset by negative impacts at the top.

Keywords
K-12 Education, Multiple outcomes of education, Inequality, Interleaving, science of learning
Education level
Document Object Identifier (DOI)
10.26300/t8ht-2r44
EdWorkingPaper suggested citation:
Haar, Lotte van der, Guthrie Gray-Lobe, Michael Kremer, and Joost de Laat. (). The long-term distributional impacts of a full-year interleaving math program in Nigeria. (EdWorkingPaper: -876). Retrieved from Annenberg Institute at Brown University: https://doi.org/10.26300/t8ht-2r44

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