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Hoek, Dirk; van den Eeden, Pieter; Terwel, Jan – Learning and Instruction, 1999
Studied general and differential effects of an experimental mathematics program on student achievement in secondary education. Participants were Dutch seventh graders, 222 in the experimental program and 222 in a control group. Results suggest that lower-achieving students can benefit from strategy instruction as long as the instruction is not too…
Descriptors: Control Groups, Foreign Countries, Junior High School Students, Junior High Schools