## 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

# Finding the Second Solution

Unit 6: Solving Problems Involving Triangles
Lesson 6 of 13

## 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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Standards:
Subject(s):
Math, law of sines, triangles (Determining Measurements), Oblique Triangles, Ambiguous Case, problem solving, pre
45 minutes

### Katharine Sparks

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