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

transcript

Use a Graph

by Monica Yuskaitis

5th Grade

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.

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

Price of Gloves

Baseball Gloves Sold

Find the Important Information.

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

Price of Gloves

What does the problem want you

to solve?

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

Price of Gloves

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.

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

Price of Gloves

Solve The

Problem

Find the prices $50 and above.

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

Price of Gloves

Find how many of these were sold.

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

Price of Gloves

Add these numbers up.

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

Price of Gloves

Baseball Gloves SoldN

LookBack &Check

Step 4 – Look Back and Check

Reread the Problem.

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

Price of Gloves

Did you answer the question?

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

Price of Gloves

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

10,000

11,000

Oakdale Salida Ripon Sonora

12,000

Let’s start by reading Oakdale’s Population

Populations of Small California Cities

10,000

11,000

12,000

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

10,000

11,000

12,000

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

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

10,000

11,000

12,000About half way.

11,500This is your

Answer.

Now let’s find out the population of Salida?

10,000

11,000

12,000

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

10,000

11,000

12,000

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

10,000

11,000

12,000

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

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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