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Unit 1, Lesson 3 Ms. Rodriguez Dividing Fractions by Fractions
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DO NOW (5 Minutes) Sheldon can read 15 comics in 5 hours. Raj can read 28 comic books in 8 hours. Who is able to read the most comic books?
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FOCUS QUESTION: How can we divide a fraction by another fraction?
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EXAMPLE #1 Diana is painting statues. She has 7/8 of a gallon of paint remaining. Each statue requires 1/16 of a gallon of paint. How many statues can she paint? Diana can paint
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EXAMPLE #2 A piano teacher has 4 ½ hours available to teach each night. Each lesson will last 1 ½ hours. How many lesson can the teacher schedule in a night? Number of lessons = time available divided by time spent 3 lessons.
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Dear future mathematicians, You have been working independently on dividing a fraction by a whole, dividing a whole by a fraction and dividing a fraction by a fraction. Your task is to use your skills to help your group find the solutions to the posted scenarios within 15 minutes. P.S. I hope you didn’t forget what we studied about percent! Your Teacher, Ms. Rodriguez
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GROUP WORK There are four scenarios. Your group must submit their work. This will be graded! Each person within your group should attempt a scenario. When time is called be prepared to post your answers on the board for discussion
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Scenario One Snoopy is building a brick dog house. He is stacking bricks that are each 2/3 feet tall. The finished dog house will be 4 2/3 feet tall. How many bricks will Snoopy need? Scenario Two Asher eats ¾ of a cup of dog food each day. How many full days will a bag with 4 cups last?
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Scenario Three Lucky the leprechaun is preparing the Lucky Charms cereal. He has 80 marshmallows and needs to use 30% of the marshmallows for a box of cereal. How many marshmallows does he use? Scenario Four Sonia’s mom gave her 7/8 of a bag of candy hearts. Sonia will split the bag with among four friends. How much of the bag will each friend get? Use a math question to support your answer.
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EXIT TICKET Alizah bought 6/8 kg of chicken meat. She is going to put the meat in bags that each hold 2/7 kg. How many bags will Alizah need? 3 bags
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