This book promotes science learning through in-depth investigation and observation in life, earth, and physical science. Each comprehensive, inquiry-based unit includes vocabulary words, reading selections, comprehension activities, "I wonder" and/or research and write prompts, and a hands-on engagement activity to allow students to explore and investigate science concepts. Units include: What Do Plants Need to Grow?; How Many Things Live in One Place?; How and When Does Earth Change?; What Happens When You Heat or Cool Something?; How Does Reducing, Reusing, and Recycling Help Earth?; and more. 14 units in all; 224 pages.See Inside!