Day 2.51

Mathematics – Practicing angle relationships. Some of the changes I made in how they format their answers are paying big dividends. Oddly enough, most of the changes I implemented on the fly the first day I was teaching. This is what is nice about having taught this class so many times – my instincts are well tuned (sometimes at least)

Physics – Total internal reflection. A fun consequence of refraction. Notice in the picture below how each surface acts as a mirror, even though the water and oil are transparent.
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