Reflection: Self-Talk Finding the Second Solution - Section 3: Problem Solving


My students seemed to struggle with labeling the triangles. The issue was in not understanding the difference between an angle and a side. I am not sure why they have this confusion but we discuss how the unit labels so that they can see that degree means an angle and meters is a length.

Another issue was that students did not know how to solve a proportion when the expression had sine in it. When this issue arose I gave student a simple proportion to solve and then asked them to use the same method to solve the Law of Sines problem. It is important for students to understand the need to retain fluency with algebraic process as they move further into mathematics.

  Student struggles in solving triangles
  Self-Talk: Student struggles in solving triangles
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Finding the Second Solution

Unit 6: Solving Problems Involving Triangles
Lesson 6 of 13

Objective: SWBAT find the second solution for an oblique triangle

Big Idea: Using drawings of situations where two solutions can be found, a process of finding the second solution will be developed.

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1 teacher likes this lesson
Math, law of sines, triangles (Determining Measurements), Oblique Triangles, Ambiguous Case, problem solving, pre
  45 minutes
2 solutions
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