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Direct linkYang, Rui; Porter, Andrew C.; Massey, Christine M.; Merlino, Joseph F.; Desimone, Laura M. – Journal of Research in Science Teaching, 2020
This study investigates, through a cluster-randomized trial, the effectiveness of two approaches to increasing middle school students' science learning using a traditional science curriculum. Ninety schools were randomly assigned into one of three arms: (a) a treatment arm in which the textbook curriculum was modified based on four principles of…
Descriptors: Science Curriculum, Secondary School Science, Middle School Students, Middle School Teachers
