Reflecting light

"This book looks at what reflections are and how we can use them. Mirrors reflect light back at exactly the same angle. You can make a 'mirror book' to explore symmetry and multiple reflections. Why does a straight straw look bent in a glass of water? Experiment using air, oil, and water to see how different materials affect the speed of light. Look at how our eyes use reflected light to see and make a pinhole camera to show how the eye works."--Provided by publisher.