This unit is a study on AIR POLLUTION in three Spanish-speaking cities, la Ciudad de Mexico, Lima, and Santiago. It is aligned with AP theme los Desafíos Mundiales and IB theme Cómo compartimos el planeta.Students will participate in listening, reading, and speaking activities to analyze the causes of the contamination through an audio source, text, and graphs. The final activity has students prepare a gallery-walk-style presentation on solutions to air pollution (6 solutions are prov