Bellringer1. Which animal has the

same average lifespan as a wolf?

a) Rabbitb) Horsec) Giraffed) Monkey

2. Which animal lives twice as long as a giraffe?

e) Rabbitf) Horseg) Wolfh) Monkey

3. What did you do on your two snow days?

Bar Graphs02.05.14

Objective

I will be able to construct and analyze bar graphs

QuestionRegion Percent

Midwest 23

Northeast 19

South 36

West 22

Which graphic would you prefer to use if you were scanning through a magazine article quickly for information?

Vocabulary!Graph: is a visual way to display data

Bar Graph: used to compare data

Scale: The numbers that your graph begins and ends at

Interval: The number you are counting by (what separates your graph into equal parts)

Vertical axis: this is where the scale is written

Horizontal axis: this is where the categories are written

Problem-Solving Strategy

1. Decide on the scale and interval

2. Label the horizontal and vertical axes

3. Draw bars for each category

4. Label the graph with a title

Example

1. Make a vertical bar graph of the data.

2. Compare the number of students who scored a B to the number of students who scored a C

Math Scores

Grade Frequency

A 10

B 13

C 7

D 2

Together

1. Make a bar graph of the data

2. Compare the number of students in jazz class with the number in ballet class

Dance Classes

Style Students

Ballet 11

Tap 4

Jazz 5

Modern 10

Independently1. Make a bar graph for

the set of data.

2. How does the number of endangered fish compare to the number of endangered reptiles?

3. List the species ordered from most endangered to least endangered

U.S. Endangered Species

Species Frequency

Fish 70

Reptiles 14

Amphibians 10

Birds 78

Mammals 63

Analyse

At your group you will be given a document with bar graphs

You need to discuss the questions that follow and answer them using complete sentences

Group WorkAt your table group you will receive a

topic to collect data on

Each member needs to move around the room and collect answers from 5 people

Return to your tables and combine your data

Each group member needs to make a bar graph using this data

Be ready to share your graph with other groups

DOL

1. Make a graph for the set of data

2. Which country made the greatest number of cars?

Cars Made in 2000

Country Cars (millions)

Brazil 1

Japan 8

Germany 5

Spain 2

U.S.A 6

Grade your DOL: Drop your pencils on the

ground and pick up a highlighter

1. Make a graph for the set of data

2. Which country made the greatest number of cars?

Japan