SWBAT identify the constant of proportionality between two quantities
1.Sweat it Out—A PE teacher gathered data during her class today and found how many calories students burn by jumping rope:
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Question 1
1.
a) Is the number of calories burned proportional to time? How do you know?
"This (is / is not proportional) because..."
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Question 2
2.
b) If Makayla jumped rope for 7 minutes, how many calories would you expect her to burn?
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Question 3
3.
c) If Makayla instead jumped rope for 10 minutes, how many calories would you expect her to burn?
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Question 4
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If yis the amount of calories burned and x is the minutes spent jumping rope, write an equation to represent the relationship between the two quantities:
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Question 5
5.
Steak--One thing everyone should know about Mr. Hwung is that one of his favorite dishes to make is a nice rib-eye steak cooked medium-rare. When he went to the store, the butcher gave him the following table:
a) Is the cost of steak proportional to the weight? How do you know?
"The cost of steak (is / is not) proportional to the weight because..."
CFS:
#1: Accurately computes unit rate or constant of proportionality
#2: Accurately explains using appropriate vocabulary
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Question 6
6.
b) If the total cost of steak is y and the pounds of steak is x, write an equation to represent the relationship between the two quantities.
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Question 7
7.
c) How can you prove that your equation in #6 is correct? Explain with math evidence.
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Question 8
8.
a) Ms. Phanchan is baking cookies and uses a constant amount of flour for each batch.
What is the value that goes in the blank to complete the table?
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Question 9
9.
b) Write an equation to represent the proportional relationship.
(Example: y=10x)
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Question 10
10.
If you finish early...
What's your favorite dessert? (Like brownies, NOT desert like the Sahara) 😄