Unit 1: Sharing Stories Unit 2: The Human Body Unit 3: Early American Civilizations: Aztecs, Maya, Incas Unit 4: Astronomy: Space Exploration Unit 5: This Planet Rocks Unit 6: Animals and Habitats: The World We Share Unit 7: Fairy Tales Unit 8: American Independence Unit 9: Heading West: Exploring the Frontier Unit 10: Adventure Stories: Tales from the Edge of the World