What are Earth's four systems, and how do they interact? Here you will learn about the four systems that interact to keep Earth 'going,' the water cycle, and more by answering this Big Question: What Are Earth's Four Systems? While the standards closely align with 5th Grade NGSS standards, this may be perfect if you are teaching about any of Earth's systems in general!❤ This product is included in a UNIT BUNDLE marked down 30% off with FIVE total lessons and over 1,000 pages of materials for TWO