The purpose of this longitudinal study was to learn how beginning elementary teachers understood and used curriculum materials for teaching reading, and how, in turn, these materials shaped teachersu27 instruction. We followed 4 teachers who worked in markedly different school situations and were provided a variety of curriculum materials, ranging from scripted reading programs to supplemental materials without teaching guides. Data were gathered through classroom observations, interviews, and curriculum artifacts over the teachersu27 first 3 years on the job. Our analysis suggested that curriculum materials interacted with teachersu27 knowledge of reading and reading instruction, and with the contexts in which they worked. As a result, curriculum materials both fostered and inhibited teachersu27 on-the-job learning. We found that the 2 teachers with weak knowledge or more restrictive materials and environments learned the least and were least able to adapt instruction to meet the needs of their students. The 2 teachers with stronger knowledge, access to multiple materials, and support for decision making regarding materials and instructional strategies learned the most and were most able to adapt instruction. Furthermore, early experiences with specific curriculum materials had effects 2 years later on these teachersu27 instructional practices. Implications for curriculum mandates, material selection, and professional development are discussed.
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