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Hakkarainen, Olavi; Ahtee, Maija – International Journal of Science and Mathematics Education, 2007
This study concerns the question of how teachers can help pupils to perceive the concept of weight (gravitation). Fifth and ninth graders were asked in a paper-and-pencil test to compare the weight of two objects suspended in a pulley-in-balance half a year after the learning intervention consisting of three successive pulley-in-balance…
Descriptors: Intervention, Independent Study, Teacher Role, Grade 9