New directions in differential equations

The Discovery of Grounded Theory: Strategies for Qualitative Research.

Helmut R. Wagner, Barney G. Glaser, Anselm L. Strauss · Social Forces · 1968 · 46.6K citations

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Handbook of research on mathematics teaching and learning

Choice Reviews Online · 1992 · 6.1K citations

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Choice Reviews Online · 1990 · 5.5K citations

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Concept image and concept definition in mathematics with particular reference to limits and continuity

David Tall, Shlomo Vinner · Educational Studies in Mathematics · 1981 · 1.9K citations

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Misconceptions Reconceived: A Constructivist Analysis of Knowledge in Transition

John P. Smith, Andrea A. diSessa, Jeremy Roschelle · Journal of the Learning Sciences · 1994 · 1.7K citations

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