This five-book pack is a wonderful introduction to earth sciences, providing young readers with ten must-know "smart words" in every book. Smart words are vocabulary words that are critical for understanding science concepts taught in the classroom. Knowing these words helps young readers build a foundational science vocabulary to make them successful readers of informational text. These photo-filled books also include chapter-end activities designed to boost learning and comprehension, such as "Talk Like a Scientist," which encourages kids to put what they've learned into their own words!