| Summary: | Thesis (Ed.D.)--Boston University
PLEASE NOTE: Boston University Libraries did not receive an Authorization To Manage form for this thesis or dissertation. It is therefore not openly accessible, though it may be available by request. If you are the author or principal advisor of this work and would like to request open access for it, please contact us at open-help@bu.edu. Thank you. === This study investigated the instructional talk of three math teachers from two urban middle schools as they implemented a curriculum designed to develop students' knowledge of academic vocabulary and encourage word use during classroom discussions. Data were drawn from audio- and video-recordings, classroom observations, and teacher interviews. Results revealed two predominant differences among teachers' instruction that seemed consequential for each classroom's discussion-based learning environment. First, teachers' instructional foci and the information about words they emphasized, whether definitional or contextual, were associated with differences in the kinds of talk generated about words and in the numbers of students who participated in discussions. Second, the ways in which teachers structured their discussions, as either knowledge display or knowledge building, shaped students' interactions with the content and with each other, while also determining the kinds of opportunities students had for target word use.
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