Problem Solving
Using UPSL to differentiate between addition and subtraction
Examine the bar graph below.
How many more days did it rain in June than in August?
What does it mean to examine the graph?
Let's find out...
Key Points
- All graphs have a title.
Rainy Days
Key Points
- All graphs represent a collection of data.
The key tells us that the maroon bars represent the number of days it rained.
Key Points
- The left side of this bar graph tells us when the data was collected
The months of May, June, July, and August
Key Points
- The bottom of this bar graph shows us the amount.
The number of days it rained, each line represents 2 days.
When we see a bar graph we want to identify the amount for each time the data was collected.
How many days in May did it rain? June? July? August?
ALWAYS write it on the graph.
Now that we have examined the graph we can begin our UPSL strategy to solve the problem!
How to Justify your Answer with College Readiness
Ask yourself the following questions
- What operation did you use to solve the problem?
- Why?
- Does your answer make sense?
- How do you know?