https://en.wikipedia.org/wiki/Atomic_theory (Yes! Wikipedia!)
https://www.wired.com/2009/09/the-development-of-the-atomic-model/ (Dr. Rhett Allain’s article)
https://phet.colorado.edu/en/simulation/build-an-atom (Phet Build an Atom)
- Instructions for “If…then…” pattern directions for Phet Build an Atom: https://docs.google.com/presentation/d/1eCVwYzZjJFk5UDWpoY93QH-Kt-mLSKpgJW2MSVSqj0w/edit?usp=sharing
https://www.youtube.com/watch?v=tW8q_JfmcbU (Lifesavers video)
https://www.webelements.com/ (a website to access a periodic table)
