"Tonight we reviewed for the student's physics test on Friday. He is in the middle of midterms and so we will review tonight and tomorrow night. Tonight we covered geometrical optics, light, and colors. I found some great images online for geometrical optics and printed them off. The only way to be convinced of where an image forms is if you draw the diagram perfect and these pictures did the job. We started with the law of reflection, Snell's law, and total internal reflection. In describing Snell's law I made sure that he knew what the index of refraction is, as well as the angles. From Snell's law I gave him a thought experiment of what happens when a light ray is exiting water and entering air. If we increase the angle to the normal more and more, the angle of refraction eventually becomes 90 degrees. Then we dove into total internal reflection. We discussed the usual applications of fiber optics and diamond cutting. The student seems very comfortable with this part of physics. We then covered geometrical optics. Starting with a plane mirror and then moving to convex and concave mirrors. I made sure he knew how to quickly sketch a ray diagram and the two rays needed to find out where the image will form. We also discussed virtual images and how to tell when an image is virtual. We moved on to lenses and we worked some examples of both positive and negative lenses. He told me the test would be all multiple choice and showed me a test bank online his teacher gave the class. As we worked through the problems I showed him how to eliminate some answers based on what you know about the question. Even if you don't know the rest of the answer you can at least narrow down the choices. Tomorrow night we will work some problems from his textbook and the classes' workbook.
I think the student is very bright with physics and has a grasp on it like his trigonometry. He just needs motivation and meetings with a tutor to force him to spend some of his time outside school studying. He is always great to work with."