Understanding Bar Graphs

AB: required

BC: required

MB: required ON: required

Teacher Resource 5.1 Unit 7 Probability and Data Management pp. H-3–10

New Canadian Edition

JUMP Math™ Copyright © 2019 JUMP Math

PDM5-1

Bar Graphs

Students will:

• construct and interpret bar graphs while paying special
attention to titles, labels, and scales; and

• interpret bar graphs involving many-to-one correspondence
to draw conclusions.

AP Book 5.1 pp. 152–154

Sometimes instead of more complicated pictures,
we use squares as symbols to show our data.

​

​Let's review the features of a pictograph

Pictograph

Bar graph

To make graphs simple, we can join the squares into columns or rows to make bars.

Compare the graphs and introduce vocabulary. See pp. H-3–4 for details.

These graphs show the same data.

Open Ended

What data does it show?

Look at this bar graph, then do the exercises on the next slide.

From BLM Snack Bar Graphs (p. H-46). See p. H-5 for details.

Open Ended

W

Open Ended

What was counted to make the graph?

Open Ended

What was the most common snack?

Open Ended

How many times more people ate fruit than muffins?

Open Ended

How many times more people ate fruit than vegetables?

Open Ended

Can you tell which was the most popular snack from the graph? Explain.

Ask questions to check that students can read the data on the graph. See p. H-5 for details.

Bars are like pictograph symbols: one block can mean more than one thing.

What is the scale of this bar graph?

Multiple Choice

What is the scale of this graph?

• Counting by ones

• Counting by twos

• Counting by threes

• Counting by fours

Look at this bar graph, then do the exercises on the next slide.

From BLM Bar Graphs for Display (1) (p. H-47). See p. H-5 for details.

What does this graph show?

Open Ended

How many people do you think picked snowshoeing?

Open Ended

How many people were surveyed altogether?

This table shows a tally of student bedtimes.

See pp. H-6–7 for details.

Multiple Choice

Where would you tally someone who goes to bed at 8:45 pm?

• Before 8:00 pm

• 8:00 pm - 8:29 pm

• 8:30 pm - 8:59 pm

• 9:00 pm - 9:29 pm

• 9:30 pm or later

Multiple Choice

What is the count for people who go to bed between 8:30 pm - 8:59 pm?

• 4

• 14

• 2

• 10

• 8

Multiple Choice

What is the total amount of people surveyed?

• 38

• 35

• 30

• 14

• 4

Open Ended

Wat would be a good title for a bar graph with this data?

Poll

What scale would be best to make a bar graph with this data?

• 2's

• 3's

• 4's

• 5's

Multiple Choice

Can you still show 10 on the graph if you are counting by 4s?

• Yes

• No

Multiple Choice

Where would 10 be placed on this scale?

• between 0-4

• between 4-8

• between 8-12

• between 12-16

• between 16-20

Multiple Select

What are the missing numbers in this scale?

• 3

• 10

• 22

• 25

• 35

Using the paragraph of text that I've provided,
create a bar graph that shows the frequency of
each letter in the text.

Which were the three most frequent letters?

See p. H-10 for details.

AP Book 5.1 pp. 152–154

New Canadian Edition