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I've been teaching high school math for over 20 years. I write about my experiences here and also share activities that I have done with my classes that have been successful (and some that have been not so successful).
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Proof of the Sum and Difference Trig Identities

Here's a way to generate the sum and difference identities for sine and cosine! Fun fact: I sped up the video so my voice sounds higher than it is in real life. 😀 You may be interested in my Sum and Difference Identities Circuit . Disclosure: Some of the links below are affiliate links. This means that, at zero…

How to Teach the Unit Circle

Check out this video for instructions on the best way to teach the Unit Circle. Each student needs: a flimsy paper plate and two different colored pencils or pens! Visit  https://bit.ly/unitcirclefreebie to get: ✔ 2 FREE fully editable PowerPoint lessons to use for teaching the Unit Circle ✔ a blank Unit Circle fo…