This is a lesson on collision theory that is perfect for the science classroom. It was designed for a high school chemistry class, but can easily be used in an elementary or middle school setting to introduce molecular collisions to students. Everything is NGSS aligned and I have included the 3D objective, parts and standards that were used in this lesson. Additionally, I included lesson notes in a lesson outline as well as questions that can be used for further application and checks for understanding. I hope you enjoy!