Teacher's Guide 11005_AmericanTeenager_TG.pdf Era(s) This Collection Covers ERA 8: The Great Depression and World War II (1929–1945) ERA 9: Postwar United States (1945 to early 1970's) ERA 10: Contemporary United States (1968 to the present) Multiple Eras Possible Instructional Strategies With this Collection TASK 20. Save the Last WordTASK 21. Acrostic PoemTASK 22. Structured Academic ControversyTASK 23. Identifying Claim/EvidenceTASK 24. QFT (Question Formulation Technique)TASK 25. Document Analysis/Sourcing