ChromaStar is a responsive physical model star and exo-planet life zone equipped with a suite of virtual astronomical instruments. It runs in a web-browser on any commonplace personal computing device and allows for PER-based methods and lab assignments when teaching astronomy from the High School to the upper University level. Advanced students can access the code through the browser’s developer console. I will provide sample demonstrations with the apparatus. See www.ap.smu.ca/OpenStars .