Special Right Triangles Investigation #MTBoS12Days

Back in September I put out a twitter-call for an interesting way to introduce special right triangles.

Alas the Twitterverse never disappoints and shared this link with me.

Here is my take:

I started my right triangle trig unit with this and randomly chose partners for my 13 students. They had 2 class periods and here are some of their posters:

As you can see, most found the patterns I was looking for. We followed that with special right triangle INB notes.

This was my first time mixing the two types in one lesson. I allowed students to use 'baby post-its' with a picture of each special right triangle on quizzes and then when it came up again in the next unit, I found most students remembered the ratios without them.

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