Introduction: Making Social Meanings in Contexts.- Sociocultural Differences in Children’s Genre Knowledge.- Enculturation to Institutional Writing.- Whole-Class and Peer Interaction in an Activity of Writing and Revision.- Co-Constructing Writing Contexts in Classrooms.- Prior Knowledge and the (RE)Production of School Written Genres.- Student Writing as Negotiation.- Writing from Sources in two Cultural Contexts.- First and Second Language Use During Planning Processes.- Collaborative Writing Groups in the College Classroom.- Reaching Out from the Writing Classroom.