KWBAT represent equivalent ratios using tape diagrams.
KWBAT use part-to-part ratios to find a missing value when one value is given.
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
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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Question 1
1.
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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Question 2
2.
b. Represent this scenario with tape diagrams.
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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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Question 6
6.
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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Question 7
7.
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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Question 8
8.
What ratios can we say are equivalent to 2 : 9?
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.
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Question 9
9.
a. Determine a ratio to describe the money in Colin’s account to the money in his sister’s account.
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Question 10
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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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Question 3
3.
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?
Question 4
4.
d. Write a ratio of the number of cups of milk Jasmine drank to the number of cups of milk Brenda drank.
Question 5
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e. Are the two ratios you determined equivalent? Explain why or why not.
Question 11
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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.