Reflection: Student Ownership Solving Trigonometric Equations Day 1 of 2 - Section 2: Solving algebraically

 

During this lesson, I had a student demonstrate a concept I have worked to build throughout this course. I begin this development in the lesson on solving exponential and logarithmic equations and I continue the concept with this lesson. The idea is that you consider the function as a variable you can solve all equations even if you do not know the meaning of the function.

This year when I started solving trigonometric equations algebraically a student says "sin x is the variable so you solve for it." This statement showed how the student could see the structure of the problem and connected the information to previous concepts. I know that this student will be more successful in other advanced math classes since he has recognized a function can be considered a variable.

I always rewrite trigonometric equations by substituting the trig function with a variable so students can see the underlying form of an equation. This tool really helps when students are working with quadratic type of equations. 

 

  Student seeing structure
  Student Ownership: Student seeing structure
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Solving Trigonometric Equations Day 1 of 2

Unit 10: Solving Equations
Lesson 3 of 6

Objective: SWBAT use algebraic concepts to solve trigonometric equations.

Big Idea: How can I solve a trigonometric equation that has an infinite number of solutions?

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