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Educational Technology Research and Development > 2018 > 66 > 2 > 429-449
Journal of Science Education and Technology > 2008 > 17 > 1 > 42-48
Journal of Science Education and Technology > 2001 > 10 > 4 > 369-384
Educational Technology Research and Development > 2018 > 66 > 2 > 429-449
Journal of Science Education and Technology > 2008 > 17 > 1 > 42-48
Journal of Science Education and Technology > 2001 > 10 > 4 > 369-384