Daftar Isi:Chapter 1. Why Social Media 2. Research Support and Conceptual Framework 3. Social Media A Comparison 4. Professional Development Opportunities on Social Media 5. Social media in the Classroom 6. Developing an Identity on Social Media 7. Developing a Professional Identity on Social media 8. Effects of You Emerging Identity 9. Methods of the Study 10 Finding The Survey 11. Case Study One Nora 12. Case Study Two Marina 13. Case Study Three Callie 14. Case Study Four Kate 15. Cross-Case Analysis and Discussion 15. Implication