Great Science Experiments for Middle School Readers More than just activity books, the titles in this series thoroughly explain the concepts behind the experiments. The hands-on projects use readily available materials and are suitable for investigations at home or at school. Focusing on topics in physical science, earth and space science, and life science, these lively and attractive books are an excellent way to meet the National Science Content Standards. Light travels in straight lines, bounces off surfaces, bends and separates as it passes through materials, and disperses into different colors. Experiments in this book use familiar objects such as mirrors, marbles, and thermometers to illustrate concepts including reflection, refraction, and infrared light.