Best Buy on Cat Food and The Price of Birdseed
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Transcript of Best Buy on Cat Food and The Price of Birdseed
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6th Grade MathFocus 2: Rates, including percentStandards: 6.RP.2, 6.RP3b, 6.RP.3c
Resource: Fosnot- Best Buys, Ratios, and RatesAddition and Subtraction of Fractions
Best Buy on Cat Food and The Price of Birdseed
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DAY ONE: Part 1Students investigate, develop strategies, draft “proofs,” and create a poster clearly displaying their understanding
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Today’s Learning TargetStudents will be able to understand proportional reasoning, fractions, and equivalence by determining the unit prices or comparing the costs of buying more cans/items in a group.
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Today’s Learning Target Scale4 I understand ratio, rates, and proportions thoroughly.
I can confidently use what I have learned. I can help others understand it.
3 I am able to understand proportional reasoning, fractions, and equivalence by determining the unit prices or comparing the costs of buying more cans/items in a group
2 I have a basic understanding of ratios, rates, and proportions. I’ve identified a few questions that I’ll need to have answered before I use
what I have learned.
1 I have some understanding of some parts of ratios, rates, and proportions. I have many questions that I’ll need to have answered before I can use
what I have learned.
0 I do not understand ratios, rates, and proportions. I do not know where to begin.
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Bob’s Best Buys
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Maria’s Pet Emporium
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These are pictures of two pet stores. As you can see, both stores are having a sale on cat food. Bob’s ad reads, “This week only: 12 cans of KittenGourmet for $15.” Maria’s ad read, “Super Sale: 20 cans of KittenGourmet for $23.” Both stores are offering the same brand of cat food but are pricing it differently! Advertising is often confusing, isn’t it? Each store wants you to think that it has the best sale price.
1. Which store has the better price?2. How do you know?
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Working with your partner, investigate the problem and develop a strategy to solve the questions below.
1.Which store has the better sale price on KittenGourmet?
2.How do you know?Explain your “proof” in your math workbook (3-5 sentences)
and be prepared to share your proof with another pair of students.
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DAY ONE: Part 2Creating Clear and Concise Strategy & “Proof” Posters to Prepare for the Math Congress