Today concluded the introduction to geometric proofs. Students continue to struggle with breaking down their thinking in discrete steps that lead to a conclusion. At this point, students cannot write even simple geometric proofs at the level of detail needed. I did ask them, given the steps and a list of possible reasons, if they could match reasons to the steps. Most did not think they could do this. I provided a very simple proof that had one given and four steps, two of which were the result of the segment addition postulate and two from substitution. It took table groups 10-15 minutes to reason through this but they did come to a correct conclusion.
Tomorrow is a review day before the unit assessment.
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