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Wednesday, January 27, 2016

1/27 Lessons 7.2.1 & 7.2.2 Solving Proportions

1.  Warm-up:  You are in line at Best Buy about to purchase the next best video game.  It's original price is $60, but you have a coupon for a 20% discount.  You know that you will have to also pay 8% tax on your purchase.  

Would it be a better deal to use the coupon and then pay tax, or pay the tax first and then use the coupon?  Explain how you know using math evidence.

2.  Lessons 7.2.1 & 7.2.2 Solving Proportions

  • Objective:  I will solve proportional relationships using multiple strategies
  • Problems 96 through 98 in teams.  Be prepared to discuss the different strategies that you have used.
  • Discussion:  What strategies did you practice?
  • Another strategy:  Fraction Busting (cross-multiplication)
    • Try 2 example problems
  • Problems 99 and 109 in teams
Homework:  Lesson 7.2.1 R/P