How would you explain the concept of exoplanets to a fifth-grade class?
How many of.you arr a little salty about Pluto being kicked out of the solar system club? The idea of Exolplanets is actually one amazing way to illustrate that as our understanding changes with research and knowledge gained, that science also changes! For fifth graders I like to immerse them in scientifically accurate diagrams and animations of our planetary system in movement around the sun that include Pluto
Through observation. I then ask various questions about the revolutions of each planet. Eventually it comes up that Pluto's orbit crosses through other planetary orbits. We use this as a launching point for characteristics of Dwarf planets. Other characteristics are the size - typically smaller than other planets, shape - round due to their gravity, and orbital paths are not cleared. Once they understand the characteristics of a Dwarf planet we do a "hunt " for other Dwarf planets in our solar system using nasa.gov. Once they learn of Eris, Orcas and Ceres we do a scientific investigation through research and check to ensure all of these names Dwarf planets fit the characteristics we discovered earlier using Thinking Maps or charts.

How do you teach your students about Dward planets and where they can be found? (Asteroid and Kuiper belts?