Nancy Larson® Science 3 starts with the big picture and moves to the child’s world. The lessons begin with our solar system and topics of the Sun, Earth, Moon and planets. From there the lessons introduce the Periodic Table of the Elements and teach the children about building blocks of the universe. This leads into how matter can be changed both chemically and physically. The states of matter are reintroduced and prepare the children for discussions about meteorology and the Earth’s atmosphere and water cycle. Moving on down from the atmosphere to the Earth’s surface, lessons introduce the continents, oceans, layers of Earth, tectonic plates, earthquakes, and volcanoes. Continually moving to the smaller scale, the next step is talking about how rocks are formed, types of rocks, weathering and erosion, and soil. After soil, lessons begin with plants and finish with animals. Discussion includes the interdependence of soil, plants, and animals, specifically seed plants and amphibians and reptiles.