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Helping behaviour during cooperative learning and learning gains: The role of the teacher and of pupils' prior knowledge and ethnic background
- All authors
- Oortwijn, M.B.; Boekaerts, M.; Vedder, P.H.; Strijbos, J.W.
- Date
- 2008
- Journal
- Learning and Instruction
- Volume
- 18
- Pages
- 146 - 159