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©Evergreen Public Schools 2010 1 Solve Both Sides Day 1 Teacher Notes Supplies Each student needs a bag of algebra tiles. Revised 8/11/11

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©Evergreen Public Schools 2010 2 Target 3b I can show the algebraic steps I used to find a solution to a multi-step equation. Make up an equation with variables on both sides of the equation.

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©Evergreen Public Schools 2010 3 Get a piece of blank paper Fold it in half hamburger style. Use the fold to divide the 2 sides of the equation.

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©Evergreen Public Schools 2010 4 LaunchLaunch Use algebra tiles to solve 2 x – 3 = 5

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©Evergreen Public Schools 2010 5 Use Algebra Tiles to Solve Linda asks Heather and Cindy how many books they read over summer. Cindy read 4 times as many books as Linda read. Heather read 4 more than three times as many books as Linda read. How many books did Cindy read? What are you asked to find? Define x: Write an equation to solve the problem.

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©Evergreen Public Schools 2010 6 Make the equation with tiles 3 x + 4 = 4 x

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©Evergreen Public Schools 2010 7 Make this equation with tiles 3 x + 4 = 4 x

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©Evergreen Public Schools 2010 8 Solve: 3 x + 4 = 4 x = 4 = x

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©Evergreen Public Schools 2010 9 Check it: 4 = x 3 x + 4 = 4 x 16 = :-)

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©Evergreen Public Schools 2010 10 Use Algebra Tiles to Solve Linda asks Heather and Cindy how many books they read over summer. Cindy read 4 times as many books as Linda read. Heather read 4 more than three times as many books as Linda read. How many books did Cindy read? Now that you know what x is, what were you asked to find?

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©Evergreen Public Schools 2010 11 Solve: 2 x + 4 = 5 x + (-5) Solve this one with your partner!

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©Evergreen Public Schools 2010 12 Solve: 2 x + 4 = 5 x + (-5)

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©Evergreen Public Schools 2010 13 Solve: 2 x + 4 = 5 x + (-5)

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©Evergreen Public Schools 2010 14 Solve: 2 x + 4 = 5 x + (-5)

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©Evergreen Public Schools 2010 15 Solve: 2 x + 4 = 5 x + (-5)

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©Evergreen Public Schools 2010 16 Solve: 2 x + 4 = 5 x + (-5)

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©Evergreen Public Schools 2010 17 Solve: 2 x + 4 = 5 x + (-5)

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©Evergreen Public Schools 2010 18 Solve: 2 x + 4 = 5 x + (-5)

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©Evergreen Public Schools 2010 19 Solve: 2 x + 4 = 5 x + (-5) x = 3

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©Evergreen Public Schools 2010 20 Check it: x = 3 2 x + 4 = 5 x + (-5) 10 = :-)

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©Evergreen Public Schools 2010 21 Team Practice Solve 3 x + 1 = 4 x – 3 2( x – 4) = 6 Check your answers. Be prepared to share your work.

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©Evergreen Public Schools 2010 22 Debrief Explain How do you solve equations with variables on both sides?

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©Evergreen Public Schools 2010 23 5 3 1 2 4 Learning Target Did you hit the target? Target 3b I can show the algebraic steps I used to find a solution to a multi- step equation Rate your understanding of the target from 1 to 5. 5 is a bullseye!

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©Evergreen Public Schools 2010 24 Practice Practice 2.6 ___

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©Evergreen Public Schools 2010 25 If you were told to solve, what would you do next?

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