I love using the Foreign Exchange Market as "applied supply and demand" because students are very interested in international trade, foreign exchange rates, and travel in general. In the four-day plan, I include a hands-on activity with Kenyan Shillings (printable) and paper clips, which are easily accessible at school or home. This is a required AP Macroeconomics unit, but can be used in regular economics with or without the ForEx Market graphs (without graphs, it's a two-day plan).Unit Include