Home > Resources Tools NASA PLANETS Curriculum Units Grades 3-8th September 19, 2025 PLANETS (Planetary Learning that Advances the Nexus of Engineering, Technology, and Science) develops programs for educators and youth in grades 3-8 that provide STEM learning with an emphasis on NASA planetary science and engineering. Check out free units of study around Space Hazards (grades 3-5), and Water in Extreme Environments and Remote Sensing (grades 6-8). PLANETS Curriculum Units