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Source:
Learning Environments Research (13871579) vol.10 (2007) nr.3 p.223-240
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Curriculum and Teaching (0726416X) vol.18 (2003) nr.1 p.5-25
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Educational Research and Evaluation (13803611) vol.3 (1997) p.364-389
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International Journal of Educational Research (08830355) vol.27 (1997) p.283-292
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Journal of Curriculum Studies (00220272) vol.27 (1995) nr.6 p.667-686
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Journal of Curriculum Studies (00220272) vol.27 (1995) nr.6 p.667-686
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Journal of Mathematics Teacher Education (13864416) vol.11 (2008) nr.1 p.61-81
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SIAM review (00361445) vol.51 (2009) nr.2 p.317-335
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Annals of Mathematics and Artificial Intelligence (10122443) vol.52 (2008) nr.1 p.25-54
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AIP Conference Proceedings (0094243X) (2008) nr.1018 p.248-252
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