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# Module 3 lesson 8

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• 1. Module 3 Lesson 8.notebook January 15, 2014 1/15/14 Module 3, Lesson 8 AIM: Using If-Then moves in Solving Equations HW: Lesson 8 Problem Set #6, 7, 11 Do Now: Exit Ticket For Lesson 7 #1 1
• 2. Module 3 Lesson 8.notebook January 15, 2014 2
• 3. Module 3 Lesson 8.notebook January 15, 2014 3
• 4. Module 3 Lesson 8.notebook January 15, 2014 4
• 5. Module 3 Lesson 8.notebook January 15, 2014 5
• 6. Module 3 Lesson 8.notebook January 15, 2014 6
• 7. Module 3 Lesson 8.notebook January 15, 2014 7
• 8. Module 3 Lesson 8.notebook January 15, 2014 8
• 9. Module 3 Lesson 8.notebook January 15, 2014 9
• 10. Module 3 Lesson 8.notebook January 15, 2014 Homework Answers 10
• 11. Module 3 Lesson 8.notebook January 15, 2014 Homework Answers 11
• 12. Module 3 Lesson 8.notebook January 15, 2014 Homework Answers 12
• 13. Module 3 Lesson 8.notebook January 15, 2014 Opening Exercise: Recall and summarize the if-then moves. 13
• 14. Module 3 Lesson 8.notebook January 15, 2014 14
• 15. Module 3 Lesson 8.notebook January 15, 2014 Julia, Keller and Israel are volunteer firefighters. On Saturday the volunteer fire department held its annual coin drop fundraiser at a streetlight. After one hour, Keller had collected \$42.50 more than Julia, and Israel had collected \$15 less than Keller. Altogether, the three firefighters collected \$125.95. How much did each person collect? Find the solution using a tape diagram. Julia Keller Israel What were the operations we used to get our answer? 15
• 16. Module 3 Lesson 8.notebook January 15, 2014 The amount of money Julia collected is j dollars. Write an expression to represent the amount of money Keller collected in dollars. Using the expressions for Julia and Keller, write an expression to represent the amount of money Israel collected in dollars. Using the expression written above, write an equation in terms of j that can be used to find the amount each person collected. Solve the equation written above to determine the amount of money each person collected and describe any if-then move used. 16
• 17. Module 3 Lesson 8.notebook January 15, 2014 Discussion: How does the tape diagram translate into the initial equation? 17
• 18. Module 3 Lesson 8.notebook January 15, 2014 Example 2 You are designing a rectangular pet pen for you new baby puppy. You have 30 feet of fence barrier. On a whim, you decide that you would like the length to be feet longer than the width. Draw and label a diagram to represent the pet pen. Write an expression to represent the width and length of the pet pen. Find the dimensions of the pet pen. 18
• 19. Module 3 Lesson 8.notebook January 15, 2014 19
• 20. Module 3 Lesson 8.notebook January 15, 2014 20
• 21. Module 3 Lesson 8.notebook January 15, 2014 21
• 22. Module 3 Lesson 8.notebook January 15, 2014 22
• 23. Module 3 Lesson 8.notebook January 15, 2014 Closing: How do you create an equation from a word problem? 23
• 24. Module 3 Lesson 8.notebook January 15, 2014 24