Approaches to Studying the Enacted Mathematics Curriculum - Paperbackby Daniel J. Heck (Editor), Kathryn B. Chval (Editor), Iris R. Weiss (Editor) Curriculum materials are among the most pervasive and powerful influences on school mathematics. In many mathematics classes, student assignments, the questions the teacher asks, the ways students are grouped, the forms of assessment, and much more originate in curriculum materials. At the same time, teachers have considerable latitude in how they use their curriculum