White light is composed of the entire visible light spectrum, but how do you teach this to students in a hands-on way? The answer is simple: by using a spectroscope. This easy-to-make tool allows students to dissect light and in the process, develop an understanding that white light is composed of all the different colors of light. With this tool, students can bend white light and divide it into its component colors of red, orange, yellow, green, blue, indigo, and violet.