Big idea: This lesson covers economic trends in B1.3 (wartime and postwar economy, new manufacturing, consumerism, credit, the whaling and fur industry in the North), technology in B1.2 (mechanization, cars, radio, movies, insulin) and population trends in B1.1.
How to help: The household technology audit is a good dinner-table activity. If anyone in your family lives with diabetes, the insulin story may be personal and meaningful. Ask your teen: Roaring for whom?
Connection: The October 1929 crash, and how credit and margin buying made it worse, begin the next unit, Canada, 1929–1945.
Common difficulties: Assuming the whole decade was prosperous; forgetting that the U.S. replaced Britain as the main investor.