Physics-Light Energy Warm-up or Bell-ringer for science class. I designed this for use with my 6th grade, but its applicable in 8th grade or for high school physics classes. This warm-up is very easy to do and allows students to use their own prior knowledge to make connections between science their lives in a fun way. Also, by bringing the outside world into the science class, this increases the chances that next time the student hears one of these songs on the radio, they will flashback to sci