In Science of Light, the students talk about light and plan their investigation to find out how different objects affect a beam of light. The students do not complete the investigation. In Flashlight Lesson (http://betterlesson.com/lesson/632318), the students conduct their investigation that they planned in this lesson, record their observations, and share their results. These lessons are from a unit of 18 lessons called Light and Sound. Science of Light when combined with Flashlight Investigation (Lesson 2) support all three dimensions of NGSS according to the Performance Expectation, Practice, Disciplinary Core Idea, and Crosscutting Concepts described in this review.