Perspectives in second language acquisition and learning -- Program models for second language learners -- Perspectives in constructivism -- Constructivist practice for English language learners -- Perspectives in critical pedagogy -- Constructivist classroom connections: the great second grade bug invasion -- Constructivist classroom connections: intermediate newcomers meet the universal chicken -- Constructivist classroom connections: eighth graders face a fence on the border -- Toward critical constructivist practice with second language learners.