Use a Graph by Monica Yuskaitis 5 th Grade. Copyright © 2000 by Monica Yuskaitis California...

Use a Graph

by Monica Yuskaitis

5th Grade

Copyright © 2000 by Monica Yuskaitis

California Standard Addressed

1.2 Organize and display single 1.2 Organize and display single variable data in appropriatevariable data in appropriate

graphs and representations…graphs and representations…

StatisticsStatistics

DataDataFifthFifth

GradeGrade



1.1 Analyze problems by identifying1.1 Analyze problems by identifyingrelationships, distinguishing relevantrelationships, distinguishing relevant

from irrelevant information &from irrelevant information &……observing patterns.observing patterns.

MathMath

ReasoningReasoningFifthFifth

GradeGrade



2.3 Use a variety of methods, such2.3 Use a variety of methods, suchas…symbols, charts, and graphs toas…symbols, charts, and graphs toexplain mathematical reasoning.explain mathematical reasoning.

MathMath

ReasoningReasoningFifthFifth

GradeGrade


Objective

• To be able to solve problems using the “use a graph” strategy.


Problem Solving is easy if you follow these steps

Understandthe

problem


Step 1 – Understand the problem

• Read the problem carefully.

• Find the important information.

• Identify what the problem wants you to solve.


Step 1 - Understand the Problem

• A sports store kept a record of the baseball gloves they sold in one week. How many baseball gloves were sold that cost $50 or more?

Read the problem carefully.

0

2

4

6

8

10

12

$20 $30 $40 $50 $60 $70

Price of Gloves

Baseball Gloves Sold

Num

ber

Sol

d




Find the Important Information.

0

2

4

6

8

10

12

$20 $30 $40 $50 $60 $70

Price of Gloves


Num

ber

Sol

d



What does the problem want you

to solve?

0

2

4

6

8

10

12

$20 $30 $40 $50 $60 $70

Price of Gloves


Num

ber

Sol

d



Decide howyou’re

going to solve theproblem


Step 2 - Decide how you’re going to solve the problem

Use a graph Use formulas

Write an equation Make a list

Find a pattern Work backwards

Use reasoning Draw a picture

Make a table Act it out

Choose a method.


Study the labels on the graph.

0

2

4

6

8

10

12

$20 $30 $40 $50 $60 $70

Price of Gloves


Num

ber

Sol

d



Solve The

Problem


Find the prices $50 and above.

0

2

4

6

8

10

12

$20 $30 $40 $50 $60 $70

Price of Gloves


Num

ber

Sol

d


Find how many of these were sold.

0

2

4

6

8

10

12

$20 $30 $40 $50 $60 $70

Price of Gloves


Num

ber

Sol

d


Add these numbers up.

0

2

4

6

8

10

12

$20 $30 $40 $50 $60 $70

Price of Gloves

Baseball Gloves SoldN

umbe

r S

old12

8+ 6

6

1

2



LookBack &Check


Step 4 – Look Back and Check


Reread the Problem.

0

2

4

6

8

10

12

$20 $30 $40 $50 $60 $70

Price of Gloves


Num

ber

Sol

d




Did you answer the question?

0

2

4

6

8

10

12

$20 $30 $40 $50 $60 $70

Price of Gloves


Num

ber

Sol

d

128

+ 66

1

2

Yes!


How do you read a graph when the bar doesn’t reach the next line?Populations of Small California Cities

9,000

10,000

11,000

Oakdale Salida Ripon Sonora

12,000


Let’s start by reading Oakdale’s Population

Populations of Small California Cities

9,000

10,000

11,000


12,000


First, find the two numbers that the bar falls between.


9,000

10,000

11,000


12,000


Second, notice what fraction of the space the bar goes up to.


9,000

10,000

11,000


12,000 About one half(1/2) of the way.


Third, now ask what is half way between 11,000 and 12,000.Populations of Small California Cities

9,000

10,000

11,000


12,000About half way.

11,500This is your

Answer.


Now let’s find out the population of Salida?


9,000

10,000

11,000


12,000


First, find the two numbers that the bar falls between?


9,000

10,000

11,000


12,000


Second, notice what fraction of the space the bar goes up to.


9,000

10,000

11,000


12,000

About one quarter (1/4)of the way.



9,000

10,000

11,000


12,000

About one quarter (1/4)of the way.

Third, now ask what is one quarter of the way between 10,000 and 11,000.

10,250This is your

Answer.


Credits Illustrations from:

• Clipart from ClickArt 125,000 Deluxe Image Pak, T/Maker Co., Broderbund Software, Inc.

Use a Graph by Monica Yuskaitis 5 th Grade. Copyright © 2000 by Monica Yuskaitis California...

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Transcript of Use a Graph by Monica Yuskaitis 5 th Grade. Copyright © 2000 by Monica Yuskaitis California...