Nancy Larson® Science 5 focuses on the interactions of systems on a micro- and macro-scale. There is an emphasis on physical science and earth and space science in Science 5, as lessons review and build upon topics taught in Science K–4. Physical science lessons examine the structure and interactions of matter. There is an exploration of force and motion, plus investigation of tools and machines with research on the history and development of tools and the role of engineers. Earth and space science lessons provide a more in-depth look at our universe. Students will also examine the interactions of the Earth’s four major systems–geosphere, atmosphere, hydrosphere, and biosphere.