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  • 1. Module 2 Lesson 22.notebook December 17, 2013 Module 2, Lesson 22 HW: • Lesson 22 Problem Set AIM: Solving Equations Using Algebra Do Now: Exit Ticket For Lesson 21 1
  • 2. Module 2 Lesson 22.notebook December 17, 2013 Exit Ticket Lesson 21 a. Are the two expressions equivalent? How do you know? b. Subtract −5 from each expression. Write the new numerical expression, and write a conclusion as an if-then statement. c. Add 4 to each expression. Write the new numerical expression, and write a conclusion as an if-then statement. d. Divide each expression by −2. Write the new numerical expression, and write a conclusion as an if-then statement. 2
  • 3. Module 2 Lesson 22.notebook December 17, 2013 3
  • 4. Module 2 Lesson 22.notebook December 17, 2013 4
  • 5. Module 2 Lesson 22.notebook December 17, 2013 Homework Answers 5
  • 6. Module 2 Lesson 22.notebook December 17, 2013 1.) What does "making zero" mean? 2.) What does "making one" mean? 3.) Why do we complete these steps? 6
  • 7. Module 2 Lesson 22.notebook December 17, 2013 Question 1: What is the general shape of the puppy yard? Draw a sketch of the puppy yard. 7
  • 8. Module 2 Lesson 22.notebook December 17, 2013 Question 2: Write an equation that would model finding the perimeter of the puppy yard. Tape Diagram Method Equation Method 8
  • 9. Module 2 Lesson 22.notebook December 17, 2013 Solve Equation using Algebra n + n + 20 + 15 + 10 + 12 = 137 Does your answer make sense in the context of the problem? Why? 9
  • 10. Module 2 Lesson 22.notebook December 17, 2013 The number of hours swimming each morning Let x = _____________________________ Equation: 10
  • 11. Module 2 Lesson 22.notebook December 17, 2013 11
  • 12. Module 2 Lesson 22.notebook December 17, 2013 3. Claire‛s mom found a very good price on a large computer monitor. She paid $325 for a monitor that was only $65 more than half the original price. What was the original price? 12
  • 13. Module 2 Lesson 22.notebook December 17, 2013 Ben‛s family left for vacation after his Dad came home from work on Friday. The entire trip was 600 mi. Dad was very tired after working a long day and decided to stop and spend the night in a hotel after 4 hours of driving. The next morning, Dad drove the remainder of the trip. If the average speed of the car was 60 miles per hour, what was the remaining time left to drive on the second part of the trip? Remember: Distance = rate multiplied by time. 13
  • 14. Module 2 Lesson 22.notebook December 17, 2013 Closing Questions • What do we mean when we say “solve the equation 6x−8=40"? • What property allows us to add 8 to both sides? • What role does the additive inverse play in solving this equation, and how can you model its use with the tape diagram? • What role does the multiplicative inverse play in solving this equation, and how can you model its use with the tape diagram? • What does this equation look like when modeled using a tape diagram? 14
  • 15. Module 2 Lesson 22.notebook December 17, 2013 15