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Kollar, Ingo, Ufer, Stefan, Reichersdorfer, Elisabeth, Vogel, Freydis, Fischer, Frank and Reiss, Kristina (2014) Effects of collaboration scripts and heuristic worked examples on the acquisition of mathematical argumentation skills of teacher students with different levels of prior achievement. Learning and Instruction, 32 . pp. 22-36. ISSN 1873-3263