Examines how lower-track science students understand shifts in standard classroom discourse patterns. Finds that students insert struggles for social status into classroom arguments about scientific ideas, making it difficult to separate in a group discussion whether evidence or the social politics of the class convinces students to accept an…

Examines how two dimensions of a community of urban science student learners--social-organizational and intellectual-thematic--evolved and influenced each other. Discusses the reasons why the teacher and student succeeded in developing a functional community but did not quite succeed in developing shared understandings in science. Contains 34…