Why does the moon change shape? How does a tadpole turn into a frog? As students begin to think through more complex ideas, appropriately leveled nonfiction resources are more important than ever. Nonfiction can boost vocabulary, help with comprehension, and serve as a catalyst for literacy development. Featuring more challenging ideas and vocabulary, a variety of print styles and text layouts, and an introduction to technical language, these Level G nonfiction readers make a great addition to any Guided Reading library.