1. 3/12/2016 ©Evergreen Public Schools 2010 1 Compare Strategies Teacher Notes You may want to make posters showing Marsha’s and Tara’s strategies to have them available for students to refer to during the discussion. (Student do not make posters) Strategy “Four Corners”: Post “Marsha”, “Tara”, “Both” and “Neither”. Asks students to vote with their feet. Go to the corner that represents who they agree with. Vocabulary equation variable

2. ©Evergreen Public Schools 2010 2 Learning Target I can solve a two-step equation with one variable. What do you know about equations?

3. ©Evergreen Public Schools 2010 3 LaunchLaunch Solve: 3 x + 15 = 24

4. ©Evergreen Public Schools 2010 4 ExploreExplore

5. 5 Marsha and Tara each solved the equation 3 x + 15 = 24 differently. Marsha 3x + 15 = 24 3x = 9 x = 3 Tara 3x + 15 = 24 x + 5 = 8 x = 3 Who’s strategy is correct? Vote with your feet! Go to the corners.

6. ©Evergreen Public Schools 2010 6 Marsha 3x + 15 = 24 3x = 9 x = 3 Tara 3x + 15 = 24 x + 5 = 8 x = 3 Describe each girl’s strategy.

7. ©Evergreen Public Schools 2010 7 2 x – 8 = 14 5 x + 7 = 42

8. ©Evergreen Public Schools 2010 8 Debrief When is Marsha’s strategy better? When is Tara’s strategy better?

9. ©Evergreen Public Schools 2010 9 5 3 1 2 4 Learning Target Did you hit the target? I can solve a two-step equation with one variable. Rate your understanding of the target from 1 to 5. 5 is a bullseye!

10. ©Evergreen Public Schools 2010 10 Practice Practice Two Step Equations 3.___

11. ©Evergreen Public Schools 2010 11 Solve 5 x + 15 = 50