In this video segment from Teaching Middle School Physical Science, teacher Nadine Coletta uses a lab to teach her students the scientific concepts and vocabulary related to light. First, she draws out what students already know about light in a classroom discussion. The class then considers the questions in the coming lab and makes predictions. Coletta describes the lab procedure and the students begin. Coletta remarks that the activity gives students real-world experience with scientific concepts; by directly experimenting with light, students can make these concepts more concrete.