Frontmatter -- Contents -- Contributors -- Foreword -- Introduction -- Part 1: Immersion Education -- 1. Pushing Immersion Forward -- 2. Context Matters: Translanguaging and Language Immersion Education in the US and Canada -- 3. Research Trends and Future Challenges in Swedish Immersion -- Part 2: Languaging -- 4. The Role of Languaging in Collaborative and Individual Writing: When Pairs Outperform Individuals -- 5. Effect of Languaging Activities on L2 Learning Motivation: A Classroom- Based Approach -- 6. Second Language Concept-Based Pragmatics Instruction: The Role of Languaging -- Part 3: Sociocultural Perspectives on Second Language Teaching and Learning -- 7. Collaborative Output: A Review of Theory and Research -- 8. Promoting L2 In-Service Teachers' Emocognitive Development through Collaborative Dialogue -- 9. Languaging in a Gerontological Context: From Conception to Realization -- 10. Mentorship as Mediation: Appreciating Merrill Swain -- Part 4: Issues and Developments in Language as Social Action -- 11. Language Play and Double Voicing in Second Language Acquisition and Use -- 12. Monolingual Versus Multilingual Language Use in Language Classrooms: Contested and Mediated Social and Linguistic Practice -- 13. Assisted Performance through Instructional Coaching: A Critical Sociocultural Perspective -- 14. An EMCA Approach to Capturing the Specialized Work of L2 Teaching: A Research Proposal -- Conclusion -- Afterword -- Index