Minds On
Notice and wonder!
Examine the following two graphs.
What do you notice? What do you wonder?
Throughout this learning activity, you can record your thoughts digitally, orally, or in print.
Student Tips
Student tips
Here are some questions to guide your thinking:
- What data is being displayed?
- Which graph is easier to read?
- Why might you use each of the graphs?
- On which graph is it easier to compare:
- the total number of items read by each class?
- how many of each category were borrowed?
Action
Features of stacked-bar graphs
A stacked-bar graph is used for comparing parts of a whole. For example, total items borrowed from the library.
Consider the features present in the stacked-bar graph example from the Minds On task.
- Each bar in the graph represents a whole (Class).
- The segments represent parts of that whole (Different types of items).
- Different colours are used for the segments to easily separate the categories.
We can use this stacked-bar graph to compare the categories for each class, and between classes.
Use the stacked bar graph to figure out how many of each item each of the classes borrowed from the school library.Press the ‘Activity’ button to access Items Borrowed Table.
Access the Items Borrowed Table and examine the information in the table to help check your answers.
| Items Borrowed |
Non- Fiction |
Fiction |
Graphic Novel |
Magazines | Audio Books | E-books |
|---|---|---|---|---|---|---|
| Class A | 5 | 12 | 5 | 8 | 9 | 4 |
| Class B | 2 | 8 | 4 | 2 | 10 | 8 |
| Class C | 9 | 2 | 5 | 3 | 3 | 7 |
| Class D | 7 | 5 | 2 | 4 | 6 | 11 |
Analyzing stacked-bar graphs
Let’s examine the same stacked-bar graph again and analyze it. Try to answer the following questions using the information on the graph. If you can’t answer, explain what information is needed.
- Which class borrowed the most items?
- Which class borrowed the least number of items?
- Which class borrowed the fewest magazines?
- Which type of item was borrowed the most from the library?
- Which two classes borrowed about the same number of items?
Record your thinking in a method of your choice. If possible, discuss with a partner before checking your answers.
Matching graphs to tables
The table shows the number of hot beverages sold in a day at two local coffee shops.
| Hot Beverages Sold in Day | ||
|---|---|---|
| Coffee Shop A | Coffee Shop B | |
| Coffee | 20 | 19 |
| Tea | 15 | 20 |
| Chai | 10 | 30 |
Which of the following is the correct stacked-bar graph for the table shown? How do you know? Record your thinking using a method of your choice.
Consolidation
Create a stacked-bar graph
A chef surveyed three businesses to find out the most preferred soup flavour for their next event.
| Chicken Noodle | Tom Yum | Minestrone | |
|---|---|---|---|
| Business A | 25 | 15 | 10 |
| Business B | 10 | 30 | 10 |
| Business C | 15 | 25 | 10 |
Create a stacked-bar graph to represent the data in the table. Record your thinking using a method of your choice.
Be sure to include:
- a title
- titles and lables for the x and y-axis
- scale
- bars that are equal width
Think about your learning
Answer the following questions to reflect on what we have learned:
- Based on the stacked-bar graph, which soup do you think the chef should prepare for the event?
- Will all three businesses be happy with the choice? Why or why not?
- How do stacked-bar graphs affect how the data is presented?
Reflection
As you read through these descriptions, which sentence best describes how you are feeling about your understanding of this learning activity? Press the button that is beside this sentence.
I feel…
Now, record your ideas using a voice recorder, speech-to-text, or writing tool.
Connect with a TVO Mathify tutor
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