Master Teacher lessons
Big Idea:
Students get to build the graph of sine or cosine with yarn and spaghetti.
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Radian rotation-style review of radians and radian measurement.
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How is the unit circle related to "triangle measurement"? A story of two equivalent definitions.
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You are riding a Ferris wheel near the Golden Gate Bridge. When will you be high enough to see the full view? Students attempt to answer this question using some knowledge of right triangles.
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The unit circle allows us to extend the trigonometric functions beyond the confines of a right triangle.
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You are sitting on a Ferris wheel. Who is directly across from you? Below you? Diagonally across from you? Use a representation of the unit circle to make generalizations.
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Why do these trig equations have so many solutions?
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Why do we use a unit circle? How can we use it to represent all angles for all circles?
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Why should we divide the circle into 360 parts? Isn't there a more natural unit? Yes - the radius!
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Students work on midterm review and let you know what they still need help with.
Big Idea:
Why do we use a unit circle? How can we use it to represent all angles for all circles?
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Students will turn a locker combination into a secret math code (angles).
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How do I even start this problem?! Give your students tools to help make sense of and work with trig problems.
Big Idea:
Students will review and extend their knowledge of trigonometric ratios.
Big Idea:
Radians are radical! Use them to make working with trig ratios easier.