If you want student engagement then the SMART Board Presentation is the way to go. My students are much more interested and love to participate when I use the SMART Board. This SMART Board presentation covers the basics of Reflection and Refraction such as the Law of Reflection, plane mirrors, convex and concave lenses. It also goes into why light bends when it enters a new medium at an angle and has several different interactive assessments, such as correctly placing a picture into the column for Reflection or the column for Refraction. This presentation addresses California State 7th Grade Science Standard 6C - Students know light travels in straight lines if the medium it travels through does not change and California State 7th Grade Science Standard 6G - Students know the angle of reflection of a light beam is equal to the angle of incidence.