We had day 2 of math camp today: logic. We did not do truth tables (much to the dismay of one of the kids) but we played with cryptarithms, where each letter represents a number. For example. if W+O=OF, then you know that O=1, which means that W=9 and F=0.
We then played Giotto, where one team chooses a word and the other team guesses, being given hints about how many letters are in both words. The best part was when the students realized that getting a score of zero was better than getting a score of 1 or 2. The teams of older kids and younger kids competed fiercely and came out...about equal. Amazing.
We talked a little about invariants at the end of the time. The easiest puzzle asks whether if you have 5 cups up and one down, can you turn all the cups up if you turn them two at a time. What stays the same when you turn over the cups?
I got the puzzles from the book "Camp Logic".
Tomorrow: Parabolic ovens (which may or may not actually heat anything up...but the theory is good, and the parabolas are for real...) and bubbles.
Unfortunately, I totally neglected to take any pictures. I will try to do better tomorrow.
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