This article begins to unravel the question, "What curricular materials work best under what kinds of conditions?" The authors address this question from the point of view of teachers and their ability to implement mathematics curricula that place varying demands and provide varying levels of support for their learning. Specifically, the…

Federal, state, and district policy mandates are increasingly affecting primary grade teachers--especially, those in at-risk schools, given that they face more mandated curriculum and professional development. This study investigated K-3 teachers in two inner-city schools as they navigated through various mandates. Qualitative and quantitative…