I want to say first and foremost, many of my ideas and inspirations for this unit came from a couple fantastic blogs. First, Mrs. E Teaches Math, and also Meg Craig! Thank you for sharing what you do with all of us! Many of the pictures you see here are because of their creations. Teaching is a lot of inspiration from others. #MTBOS on Twitter is a great start if you haven’t found it yet!

First a little Inductive Reasoning

Then logic vocabulary.

Deductive Reasoning is next.

Here are my deductive reasoning notes.

Next we investigate about angle pairs and do a little introductory proofs. I am thinking of making these proofs a little simpler, as I have a lot of 8th graders in this class and they’re not always ready for this many steps.

The Linear Pair/ Vertical Angles investigation can be found here.

Finally, I wrap the chapter up with some Parallel Lines work and a little more proof.

There are many cut and paste proof activities out there. I find these best to get the students to think about a logical order. They are not going to be perfect at Geometric proof at first. It takes work!

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