
L19 Comparison Shopping
Presentation
•
Mathematics
•
5th - 7th Grade
•
Practice Problem
•
Easy
+4
Standards-aligned
Raven Smith
Used 25+ times
FREE Resource
8 Slides • 9 Questions
1
L19 Comparison Shopping
I can find different unit rates when given a table, equation and/or graph
2
Open Ended
Imagine we took a trip to the grocery store and we see that 9 rolls of toilet paper costs $5 and 12 rolls of toilet paper costs $8. How can we determine which quantity will be the better buy?
3
We can compare different rates by finding their UNIT RATES first ...
9 rolls/$5 means that it has a unit rate of $1.80/roll
12 rolls/$8 means that it has a unit rate of $1.50/roll
Therefore, we would save more money in long run if we buy the 12 rolls at $8.
4
Fill in the Blanks
Type answer...
5
Brain Break
One Must Go: Come off mute and explain which one must go and why
6
Bryan vs. ShaNiece
Bryan and ShaNiece are both training for a bike race and want to compare who rides his or her bike at a faster rate.
Both bikers use apps on their phones to record the time and distance of their bike rides.
Bryan’s app keeps track of his route on a table, and ShaNiece’s app presents the information on a graph.
7
Multiple Choice
A rate from Bryan's table is 75 miles/3 hours. What is his unit rate?
25 hours/mile
75 miles/hour
25 miles/hour
8
Multiple Choice
From the graph we can see that ShaNiece is biking at a rate of 30 miles/2 hours. Her unit rate is...
5 miles/hour
15 miles/hour
2 hours/mile
9
Poll
So if Bryan's unit rate is 25 miles/hour and ShaNiece's unit rate is 15 miles/hour. Who is biking the fastest?
Bryan
ShaNiece
10
Bryan is biking faster, because he covers more ground in the same 1 hour.
Notice how by comparing the unit rate we are able to decide who is going faster.
11
Brain Break
Riddle: What has to be broken before you can use it?
12
Claire vs. Kate
Claire and Kate are entering a cup stacking contest.
Both girls have the same strategy: stack the cups at a constant rate so that they do not slow down at the end of the race.
While practicing, they keep track of their progress, which is shown.
13
Open Ended
Based on Claire's graph what is her unit rate?
14
Open Ended
Based on Kate's equation, when time (t) is equal to 1, what is c equal to?
What is her unit rate?
15
Multiple Choice
Claire is stacking cups at a unit rate of 5 cups/sec. Kate is stacking at a unit rate of 4 cups/sec. Who is stacking at a faster rate?
Claire
Kate
16
Multiple Choice
Kate notices that she is not stacking her cups fast enough. What would Kate’s equation look like if she wanted to stack cups faster than Claire?
c = 3t
c = 4t
c = 5t
c = 6t
17
Exit Ticket: Go to the NearPod Code for your homeroom-
(1) join.nearpod.com
(2) enter code
JSU- 4A3HR
Spelman- 829SY
ASU- AXNJD
L19 Comparison Shopping
I can find different unit rates when given a table, equation and/or graph
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