%0 Journal Article %T Framing Constructivism in Practice as the Negotiation of Dilemmas: An Analysis of the Conceptual, Pedagogical, Cultural, and Political Challenges Facing Teachers %A Windschitl, Mark %J Review of Educational Research %V 72 %N 2 %P 131-175 %@ 0034-6543 %D 2002-06-01 %I Sage Publications %~ DeepDyve