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7th Math Unit 0 Day 5 - 8/21

Last updated over 1 year ago
11 questions

Objectives:

  • KWBAT represent equivalent ratios using tape diagrams.
  • KWBAT use part-to-part ratios to find a missing value when one value is given.

Independent Practice

Criteria for Success:
  • Use a model to represent a ratio relationship
  • Identify the unknown value using a model
  • Accurately creates an equivalent ratio
Directions: Use the information in the question below to answer the following questions.
Question 1: For a project in their health class, Jasmine and Brenda recorded the amount of milk they drank every day. Jasmine drank 2 pints of milk each day, and Brenda drank 3 pints of milk each day.
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a. Write a ratio of the number of pints of milk Jasmine drank to the number of pints of milk Brenda drank each day.

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b. Represent this scenario with tape diagrams.

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c. If one pint of milk is equivalent to 2 cups of milk, how many cups of milk did Jasmine and Brenda each drink? How do you know?

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d. Write a ratio of the number of cups of milk Jasmine drank to the number of cups of milk Brenda drank.

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e. Are the two ratios you determined equivalent? Explain why or why not.

Question 2: Josie took a long multiple-choice, end-of-year vocabulary test. The ratio of the number of problems Josie got incorrect to the number of problems she got correct is 2: 9.
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If Josie missed 8 questions, how many did she get correct? Draw a tape diagram to demonstrate how you found the answer.

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If Josie missed 20 questions, how many did she get correct? Draw a tape diagram to demonstrate how you found the answer.

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What ratios can we say are equivalent to 2 : 9?

Wait until Mr. Espinoza tells you to move on to the exit ticket

Done early? Try this one: https://www.ixl.com/math/grade-7/use-tape-diagrams-to-solve-ratio-word-problems

Exit Ticket

Criteria for Success:
  • Use a model to represent a ratio relationship
  • Identify the unknown value using a model
  • Accurately creates an equivalent ratio
  • The solution includes accurate ratio language
Directions: Use the information in the question below to answer the following questions.
Exit Ticket Question 1: Colin and his sister both open savings accounts.  Each begins with a balance of zero dollars. For every two dollars Colin saves, his sister saves five dollars in her account.
Required
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a. Determine a ratio to describe the money in Colin’s account to the money in his sister’s account.

Required
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b. If Colin has $40 in his account, how much money does his sister have in her account? Use a tape diagram to support your answer.

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c. Create an equivalent ratio that describes the relationship between the amount of money in Colin’s account and the amount of money in his sister’s account.