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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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How to Teach Graphing Sine and Cosine



⁠Watch this video if you struggle with how to teach graphing the sine and cosine functions. 

I will show you how to graph a specific cosine function step by step. 

This technique works with both sine and cosine functions and works with all transformations. 

After trying a few different ways to teach this topic over the years, this particular technique has been very successful for my students. Your students will like this, too!



If you want a free copy of the PowerPoint presentation that I use to teach this lesson, scroll to the bottom of this page. Here's the link to the trig graph paper Here's the link to a resource that I use with my students Check out my Facebook group for Algebra 2, Precalculus, and Calculus teachers




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