SWBAT decide whether two quantities are proportional to each other by checking for a constant multiple for all x’s and y’s in a table
1 point
1
Question 1
1.
More Shops—Ms. Bizzell is opening a store that exclusively sells Pokemon cards.
a) Does Ms. Bizzell's pricing show a proportional relationship? Explain.
"I think Ms. Bizzell’s pricing (shows / does not show) a proportional relationship because…"
CFS:
#1: Accurately computes unit rates or finds constant of proportionality
#2: Accurately explains if a table is proportional using appropriate vocabulary and evidence
1 point
1
Question 2
2.
Weather—It doesn’t snow often in San Jose, but some data on the amount of snowfall during the last snowstorm in 1976 was recorded in the table below:
a) Is the relationship between time (x) and snowfall (y) proportional? How do you know?
"I think the relationship between time and snowfall (is / is not) proportional because..."
CFS:
#1: Accurately computes unit rates or finds constant of proportionality
#2: Accurately explains if a table is proportional using appropriate vocabulary and evidence
SPICY Problems (Try if you have time)
1 point
1
Question 3
3.
Blockbuster--Back when your teachers were kids, we had to rent movies from a place called Blockbuster. The table below shows how much money Mr. A paid and how long he could keep the movies for.
Is there a proportional relationship between the cost of renting and the total number of days? Explain how you know.
CFS
#1: Accurately computes unit rates
#2: Accurately explains if a table is proportional using appropriate vocabulary and evidence
4 points
4
Question 4
4.
Commission--Mr. Hwung knows someone named Selly McCarman, who is a car salesman. He makes money from commission, which means he earns more money when he sells more cars.
A table of Selly's sales from last month is below:
Is the amount of money that Selly earned proportional to the number of cars he sold? Explain and check that you meet all CFS.
CFS
#1: Accurately computes unit rates
#2: Accurately explains claim using appropriate vocabulary/evidence