Unit 1: Mysteries Reading A: Have Aliens Visited Us? Reading B: The Lost City of Atlantis Unit 2: Favorite Foods Reading A: The History of Pizza Reading B: The Hottest Chilies Unit 3: Cool Jobs Reading A: Training Grizzlies! Reading B: Getting the Shot Unit 4: Shipwrecks Reading A: I�ve Found the Titanic! Reading B: Treasure Ship Unit 5 Science Investigators Reading A: At the Scene of a Crime Reading B: The Disease Detective Unit 6: Explorers and Pioneers Reading A: Who Was Sacagawea? Reading B: Polar Pioneer Unit 7 Mind�s Eye Reading A: The Meaning of Dreams Reading B: Seeing the Impossible Unit 8: Animal Wonders Reading A: A Penguin Family Reading B: Do Animals Laugh? Unit 9: Incredible Domes Reading A: A Love Poem in Stone Reading B: The Great Dome of Florence Unit 10: Wild Weather Reading A: A Warming World Reading B: Freaky Forces of Nature Unit 11: Giants of the Past Reading A: The Mammoth�s Tale Reading B: Sea Monsters Unit 12: Technology Reading A: The Robots Are Coming! Reading B: How Will We Live in 2035?