The lessons below are teacher-favorite lessons focused on comets. For more search options or to search by other science target, missions and other criteria, visit our Fast Lesson Finder. You can also search by curriculum standards on our popular Curriculum Standards Quilts.
What is a Planet?
Grade Level: 9-12
Body: Our Solar System, Asteroids, Comets, Kuiper Belt & Oort Cloud
Mission: New Horizons (Dwarf Planets)
Short Description: Students learn about the characteristics of planets, comets, asteroids, and trans-Neptunian objects through a classification activity. Students can then apply what they have learned by participating in a formal debate about a solar system object discovered by the New Horizons spacecraft and by defining the term "planet."