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Scavo, Thomas R National Council of Teachers of Mathematics 1998 p.p394
Annenberg/CPB Projects: Learner online
Lazerick, Beth National Council of Teachers of Mathematics 1998 p.p416
Clements, Douglas National Council of Teachers of Mathematics 1998 p.p421
Clements, Douglas National Council of Teachers of Mathematics 1998 p.p420
Discourse that promotes conceptual understanding
Kazemi, Elham National Council of Teachers of Mathematics 1998 p.p410