The students in PreCalc H are continuing to work on induction proofs. One type of proof is pretty common: prove a^n+b is divisible by c. They did some guided examples in groups, and then they had to come up with their own rule and proof. It was a nice twist on the “I tell you what to prove, and you prove it” back and forth. This is pretty much scratch work for them, they put their proof of their theorem in their notebooks with more detail, sentence fragments, and with clearer steps. Activity worked well.

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