## U5 L9 Lesson Notes and Problems - Section 1: Opener: Number Riddle and Homework Debrief

U5 L9 Lesson Notes and Problems

# Three Ways to Solve a Problem

Unit 9: Systems of Equations
Lesson 9 of 20

## Big Idea: Over the course of today’s lesson, students will beg for an algebraic solution, understand on their own why it’s great that algebra was invented, and see the beauty of an elegant solution.

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43 minutes

### James Dunseith

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