This nonfiction reading unit (level Y) focuses on the economic systems of ancient Egypt and the Indus River Valley civilization. Students learn about the similarities and differences of the economic strategies that helped the ancient Egyptians and the Indus River Valley civilization prosper. The unit contains teacher support pages, a reading selection with supporting illustrations, and activities to guide students in close reading of the text. Students also gain practice applying content and academic vocabulary. The unit concludes with a lesson exploring text structure (Main Idea and Details) and a text-based writing activity.