Well, it's that time of the year! As you know your lesson on Special Right Triangles will not only be the foundation for everything trigonometry moving forward but it's also something that their Algebra 2, Pre-Calculus, and Calculus teachers are heavily relying on you to teach them. Teaching the Unit Circle is hard enough if they haven't mastered the Special Right Triangles it becomes a nightmare!
Below are a Worksheet and Guided Notes to assist you in your lesson but one way I found very effective is to teach them a jingle to remember these few special triangles. They need to be able to create them but they are used so much that needing to memorize them is inevitable. Have them watch the video lesson on their own and then play the jingle throughout class over and over. They will learn the jingle whether they want to or not! Then watch their test scores and recall go up!
If you want more than just these few free resources join the Geometry Teacher Community. You'll never use a text book again!