6
www.everydaymathonline.com 688 Unit 8 Fractions Advance Preparation Prepare the line plot (pictured on page 692) for Part 2. For the optional Enrichment activity in Part 3, obtain a copy of the book Math Curse by Jon Scieszka and Lane Smith (Viking, 1995). Teacher’s Reference Manual, Grades 1– 3 pp. 225–227 Key Concepts and Skills • Use pennies, counters, or pictures to solve fraction number stories. [Number and Numeration Goal 2] • Describe solution strategies for solving fraction number stories. [Number and Numeration Goal 2] • Use Fraction Cards to compare fractions. [Number and Numeration Goal 6] • Measure and draw a line segment to the nearest 1 _ 4 inch. [Measurement and Reference Frames Goal 1] Key Activities The teacher and children make up and solve number stories involving fractions. Children practice solving fraction number stories independently. Ongoing Assessment: Informing Instruction See page 689. Ongoing Assessment: Recognizing Student Achievement Use journal page 201. [Number and Numeration Goal 2] Materials Math Journal 2, pp. 200 and 201 Home Link 8 7 inch ruler pennies or counters (optional) Fraction Cards (optional) tool-kit clock (optional) slate Reviewing the Line Plot Routine Student Reference Book, pp. 79–81 stick-on notes Children describe landmarks on a line plot and compare chances for two different events. Math Boxes 8 8 Math Journal 2, p. 202 Children practice and maintain skills through Math Box problems. Home Link 8 8 Math Masters, p. 262 Children practice and maintain skills through Home Link activities. ENRICHMENT Solving Math Curse Number Stories Math Curse paper Children solve and write fraction number stories based on those found in the book Math Curse. EXTRA PRACTICE Minute Math + Minute Math ® +, pp. 86, 90, 92, and 155 Children solve number stories with fractions. Teaching the Lesson Ongoing Learning & Practice Differentiation Options Fractions in Number Stories Objective To provide experiences with solving number stories involving fractions. eToolkit ePresentations Interactive Teacher’s Lesson Guide Algorithms Practice EM Facts Workshop Game™ Assessment Management Family Letters Curriculum Focal Points Common Core State Standards

Fractions in Number Stories - Everyday Math · PDF fileMath Curse paper Children solve and ... Fractions in Number Stories ... Sample answer: Jerome gave 2 new pens to his little sister

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www.everydaymathonline.com

688 Unit 8 Fractions

Advance PreparationPrepare the line plot (pictured on page 692) for Part 2. For the optional Enrichment activity in Part 3,

obtain a copy of the book Math Curse by Jon Scieszka and Lane Smith (Viking, 1995).

Teacher’s Reference Manual, Grades 1– 3 pp. 225–227

Key Concepts and Skills• Use pennies, counters, or pictures to solve

fraction number stories. 

[Number and Numeration Goal 2]

• Describe solution strategies for solving

fraction number stories. 

[Number and Numeration Goal 2]

• Use Fraction Cards to compare fractions. 

[Number and Numeration Goal 6]

• Measure and draw a line segment to

the nearest 1

_ 4 inch. 

[Measurement and Reference Frames Goal 1]

Key ActivitiesThe teacher and children make up and solve

number stories involving fractions. Children

practice solving fraction number stories

independently.

Ongoing Assessment: Informing Instruction See page 689.

Ongoing Assessment: Recognizing Student Achievement Use journal page 201. [Number and Numeration Goal 2]

MaterialsMath Journal 2, pp. 200 and 201

Home Link 8�7

inch ruler � pennies or counters (optional) �

Fraction Cards (optional) � tool-kit clock

(optional) � slate

Reviewing the Line Plot RoutineStudent Reference Book, pp. 79–81

stick-on notes

Children describe landmarks on a line

plot and compare chances for two

different events.

Math Boxes 8�8Math Journal 2, p. 202

Children practice and maintain skills

through Math Box problems.

Home Link 8�8Math Masters, p. 262

Children practice and maintain skills

through Home Link activities.

ENRICHMENTSolving Math Curse Number StoriesMath Curse � paper

Children solve and write fraction number

stories based on those found in the book

Math Curse.

EXTRA PRACTICE

Minute Math +Minute Math®+, pp. 86, 90, 92, and 155

Children solve number stories with fractions.

Teaching the Lesson Ongoing Learning & Practice Differentiation Options

Fractions in Number Stories

Objective To provide experiences with solving number stories

involving fractions.

�������

eToolkitePresentations Interactive Teacher’s

Lesson Guide

Algorithms Practice

EM FactsWorkshop Game™

AssessmentManagement

Family Letters

CurriculumFocal Points

Common Core State Standards

688_EMCS_T_TLG_G3_U08_L08_576892.indd 688688_EMCS_T_TLG_G3_U08_L08_576892.indd 688 2/23/11 10:55 AM2/23/11 10:55 AM

Lesson 8�8 689

14

14

14

14

14

14

14

0 1 341

Math Message solution

0 3412

4114

34

24

14 11 2

Extending the line segment

Adjusting the ActivityExtend the line segment

1

_ 4 inch.

Think of the line segment as part of a number

line from 0 to 2. With children, label the points

that are 1

_ 4 inch apart.

AUDITORY � KINESTHETIC � TACTILE � VISUAL

1 Teaching the Lesson

� Math Message Follow-Up WHOLE-CLASSDISCUSSION

If an overhead projector is available, use it to go over the solution. Lead children to the conclusion that since there are seven 1 _ 4 -inch segments, the line segment is 7 _ 4 inches long. 7 _ 4 inches is another name for 1 3 _ 4 inches.

� Writing and Solving Fraction WHOLE-CLASS ACTIVITY

Number StoriesYou and the children make up stories involving fractions of sets. Children solve the problems in any way they can—using pennies or counters, drawing pictures or doodles, and so on. You might want to begin with stories such as the following:

● Andy bought 24 stamps for his stamp collection. 3 _ 4 of the stamps were from the United States. How many stamps were from the United States? 18 stamps

Possible solution strategy: Take 24 coins or counters and divide them into 4 equal sets. Each set consists of 6 counters and is 1 _ 4 of the total, so 1 _ 4 of 24 = 6. Three sets consist of 18 counters and are 3 _ 4 of the total, so 3 _ 4 of 24 = 18.

Ongoing Assessment: Informing Instruction

Watch for children who are having difficulty solving problems with fractions of

sets. Remind them that the denominator (the bottom number in a fraction) tells

the total number of equal groups, and the numerator (the top number in a

fraction) tells the number of equal groups being considered. Children count the

objects in the number of groups given by the numerator to solve the problem.

Have children use manipulatives to act out each problem.

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BBBBBBBBBBBBBBBBBBBB ELEELEEMMMMMMMMMOOOOOOOOOBBBLBLBLBBLBBBLOOORORORORORORORORORORORO LELELELEEEEEELEMMMMMMMMMMMLEMLLLLLLLLLLLLLLLLLLLLLRRRRRRRRRRGGGGGLLLLLLLLLLLLLVINVINVINVINNNNVINVINVINNVINVINVINVINVV GGGGGGGGGGGOLOOOLOOLOLOLOO VVINVINLLLLLLLLLLVINVINVINNNVINVINVINVINVINVINVINVINNGGGGGGGGGOOOLOLOLOLOLLOOOO VVVLLLLLLLLLLVVVVVVVVVOSOSOSOOSOSOSOSOSOSOOSOSOSOSOOOSOOOSOSOSOSOSOSOSOOSOSOSOSOSOSOSOSOSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS VVVVVVVVVVVVVVVVVVVVLLLLLLLLVVVVVVVVVLVVVVVVVVLLLLLLLLVVVVVLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLSSSSSSSSSSSSSSSSSSSSSSSOOOOOOOOOOOOOOOOOOO GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGNNNNNNNNNNNNNNNNNNNNNNNNNIIIIIIIIIIIIIIIIIIIISOLVING

Getting Started

Mental Math and Reflexes Pose problems like the following as children write the answers on slates. They may use tool-kit clocks as needed.

Math Message Using your ruler, draw a line segment

that is 1 3

_ 4 inches long on your slate.

Divide the line segment into 1

_ 4 -inch

segments. How many 1

_ 4 -inch segments are there?

Home Link 8�7 Follow-Up Go over the answer to Problem 5. The

diagram shows 2 wholes and 4

_ 12

(or 1

_ 3 )

of a whole. The corresponding mixed number, then, is

2 4

_ 12

(or 2 1

_ 3 ). You may want to have children write

number models for Problems 1–3. For example:

Problem 1: 1

_ 4 +

1

_ 4 +

1

_ 4 +

1

_ 4 +

1

_ 4 +

1

_ 4 =

6

_ 4 , or 1

2

_ 4 , or 1

1

_ 2

PROBLEMBBBBBBBBBBOOOOOOOOOOOBBBBBBBBBBBBBBBBBBBBBBBBBBB MMMMMEEEBLEBLLBLBLBLEBLELLLLBLEBLEBLEBLEBLEEEMMMMMMMMMMMMMOOOOOOOOOOOBBBBLBLBLBLBLBBLLLLLLPROPROPROPROPROPROPROPROPROPRPROPPRPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPROROROOROROOROOPPPPPPP MMMMMMMMMMMMMMMMMMMMMEEEEEEEEEEEEELEEELELEEEEEEELLLLLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRPROBLEMSOLVING

BBBBBBBBBBBBBBBBBBBB EELEMMMMMMMOOOOOOOOOBBBLBLBLBLBBLBBOOOOROROROROROROROROROO LELELELEEEEEELEMMMMMMMMMMMMLEMLLLLLLLLLLLLLLLLLLLLLLRRRRRRRRRRRGGGLLLLLLLLLLLVINVINVINVINVINNNNVINVINVINNVINVINVINVINV GGGGGGGGGGGOLOOOLOOLOLOLOO VINVINVVLLLLLLLLLVINVINVINVINVINVINVINVINVINVINVINVINVINVINNGGGGGGGGGGOOOLOLOLOLOLOLOOO VVVLLLLLLLLLLVVVVVVVVVVOOSOSOOSOSOSOSOSOSOSOOSOSOSOSOSOOOOOSOSOSOSOSOSSOOSOSOSOSOSOSOSOSOSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS VVVVVVVVVVVVVVVVVVVVVLLLLLLVVVVVVVVLVVVVVVLLLLLLLLVVVVVLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLSSSSSSSSSSSSSSSSSSSSSSOOOOOOOOOOOOOOOOOOO GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGNNNNNNNNNNNNNNNNNNNNNNNNNNIIIIIIIIIIIIIIIIIIISOLVING

1 minute = ____ seconds 60

1 hour = ____ minutes 60

1

_ 2 hour = ____ minutes 30

1

_ 4 hour = ____ minutes 15

2

_ 4 hour = ____ minutes 30

3

_ 4 hour = ____ minutes 45

1

_ 3 hour = ____ minutes 20

1

_ 12

hour = ____ minutes 5

1

_ 6 hour = ____ minutes 10

EM3cuG3TLG2_689-693_U08L08.indd 689EM3cuG3TLG2_689-693_U08L08.indd 689 1/14/11 9:28 AM1/14/11 9:28 AM

690 Unit 8 Fractions

Adjusting the Activity Make up additional fraction number

stories as appropriate before children solve

problems independently. Use similar number

stories in future Minute Math+ sessions.

AUDITORY � KINESTHETIC � TACTILE � VISUAL

● Ruthann read 12 books in the last 4 months. Three were nonfiction. What fraction of the books were nonfiction? 3 _ 12 or 1 _ 4 of the books On average, how many books did she read per month? 3 books

Possible solution strategy: Three out of 12 books is equivalent to 3 _ 12 of the total. Take 12 counters and divide them into 4 sets of 3. Each set is 1 _ 4 of the total. To find the average number read per month, divide 12 by 4.

● Kiko has done 3 _ 5 of the math problems. What fraction of the math problems does she still have to do? 2 _ 5 of the problems

Possible solution strategy: Suppose Kiko has 5 problems to solve. She solved 3 _ 5 of the problems—3 problems. This leaves 2 problems still to be solved. Two out of 5 problems is 2 _ 5 of the problems.

● Which would you rather have— 2 _ 3 of a can of lemonade or 5 _ 6 of a can of lemonade? Assuming you like lemonade, 5 _ 6 of a can

Possible solution strategy: Use Fraction Cards to compare the fractions, or reason as follows: 2 _ 3 is equivalent to 4 _ 6 , which is less than 5 _ 6 . Therefore, 5 _ 6 is more than 2 _ 3 .

● Jim has $8. If he shares his money equally with 8 people, each person gets $8 ÷ 8 = $ 8 __ 8 = $1; if he shares it equally with 4 people, each person gets $8 ÷ 4 = $ 8 __ 4 = $2. If Jim doesn’t share his money, how much money does he have? $8 Write a fraction to show how much money Jim has. $ 8 __ 1

Possible solution strategy: The denominator names the number of people among whom Jim’s $8 is divided. Since the money was not divided or shared with anyone but Jim, the denominator is 1. Since there are $8, 8 is the number in the numerator. $ 8 __ 1 = $8 ÷ 1 = $8

● Which is the larger fraction, 1 __ 3 or 3 __ 1 ? 3 __ 1

Possible solution strategy: The denominator tells how many parts the whole is divided into. For 1 __ 3 , the whole is divided into 3 parts and 1 __ 3 is one of those parts. For 3 __ 1 , the whole is divided into 1 part and there are 3 wholes. 3 __ 1 = 3 × 1 __ 1 = 3 So, 3 __ 1 is more than 1 __ 3 .

● It took Nathan 1 1 _ 4 hours to do his homework. How many minutes did he spend on homework? 75 minutes

Possible solution strategy: 1 hour = 60 minutes, 1 _ 4 hour = 1 _ 4 of 60 minutes, or 15 minutes. Therefore, 1 1 _ 4 hours = 60 minutes + 15 minutes = 75 minutes.

689-693_EMCS_T_TLG_G3_U08_L08_576892.indd 690689-693_EMCS_T_TLG_G3_U08_L08_576892.indd 690 2/23/11 11:12 AM2/23/11 11:12 AM

Fraction Number Stories continuedLESSON

8� 8

Date Time

9. Write a fraction story. Ask your partner to solve it.

Sample answer: Jerome gave 2 new pens to

his little sister. If the package had 10 pens in

it, what fraction of the pens did he keep for

himself? �180� of the pens

Draw eggs in each carton to show the fraction. Sample answers:Example:

�1

7

2�

10.�1

6

2�

11.�1

4

2�

12.�1

3

2�

13.�1

2�

14.�3

4�

15.�1

3�

16. Julie drank �1

4� of a glass of juice.

Draw an empty glass.

Shade in the glass to show how much

juice is left. Write the fraction.

34–

glass of

juice is left.

of the

� �

� �

Math Journal 2, p. 201

Student Page

Lesson 8�8 691

Fraction Number StoriesLESSON

8 � 8

Date Time

Solve these number stories. Use pennies, counters, or draw

pictures to help you.

1. There are 8 apples in the package.

Glenn did not eat any. What fraction

of the package did Glenn eat?

3. Chante used �2

3� of a package of

ribbon to wrap presents. Did she use

more or less than �3

4� of the package?

5. There are 10 quarters. You have 3.

I have 2. What fraction of the

quarters do you have?

What fraction of the quarters do

I have?

What fraction of the quarters do

we have together?

7. Dorothy walks 1�1

2� miles to school.

Jaime walks 1�2

4� miles to school.

Who walks the longer distance?

2. Anik bought a dozen eggs at the

supermarket. When he got home, he

found that �1

6� of the eggs were cracked.

How many eggs were cracked?

eggs

4. I had 2 whole cookies. I gave you �1

4�

of 1 cookie. How many cookies did I

have left?

cookies

6. One day, Edwin read �1

3� of a book.

The next day, he read another �1

3� of

the book. What fraction of the book

had he read after 2 days?

What fraction of the book did he

have left to read?

8. Twelve children shared

2 medium-size pizzas equally.

What fraction of 1 whole pizza

did each child eat?

�13

�23

1�34

2

�130�

�08

Neither; 1�12

� � 1�24

�150� or �

12

�120� or �

15

less

�16

� or �122�

Math Journal 2, p. 200

Student Page

● Tamekka had 20 books to put into her bookcase. She put 1 _ 2 of the books on the top shelf and 1 _ 2 of the remaining books on the second shelf. How many books did she still need to put into the bookcase? 5 books What fraction of the total number of books is that? 1 _ 4 of the total

Possible solution strategy: 1 _ 2 of 20 = 10, so she put 10 books on the top shelf, which left 10 books to be shelved. She put 1 _ 2 of the remaining 10 books on the second shelf—that’s 5 books. She put a total of 10 books + 5 books, or 15 books, into the bookcase which left 5 books to be shelved.

After working through a few examples, ask volunteers to make up stories for the class to solve.

� Solving Fraction Stories PARTNER ACTIVITY

(Math Journal 2, pp. 200 and 201)

Children work with a partner or independently to complete journal pages 200 and 201.

Ongoing Assessment: Recognizing Student Achievement

Journal page 201

Problems

10–13 �

Use journal page 201, Problems 10–13 to assess children’s progress toward

solving problems involving fractional parts of a collection. Children are making

adequate progress if they are able to successfully complete Problems 10–13.

Some children may successfully complete Problems 14–16.

[Number and Numeration Goal 2]

PROBLEMBBBBBBBBBBBOOOOOOOOOOOBBBBBBBBBBBBBBBBBBBBBBBBB MMMMMEEEEEMMMMLEBLELBLEBLELLLBLEBLEBLEBLEBLEBLEBLEEEEMMMMMMMMMMMMMMOOOOOOOOOOOOBBLBLBLBLBLBLLLLLLLPROPROPROPROPROPROPROPROPROPROPROPROPRPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPROROROROROROROOPPPPPPP MMMMMMMMMMMMMMMMMMMEEEEEEEEEEEELLELEEEEEEEEEELLLLLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRPROBLEMSOLVING

BBBBBBBBBBBBBBBBBBBB ELEELEEMMMMMMMMMMOOOOOOOOOBBBLBBLBLBLBBLOOROROROORORORORORORORORO LELELELEEEEEELEMMMMMMMMMMMMLEMLLLLLLLLLLLLLLLLLLLLLRRRRRRRRRRGGGGGLLLLLLLLLLLLLVINVVINVINNNNNVINVINVINNVINVINVINVINV GGGGGGGGGGGOLOOOLOOLOLOLOO VVINVINLLLLLLLLLVINVINVINVINVINVINVINVINVINVINVIVINV NGGGGGGGGGOOOLOLOLOLOLOLLOO VVVVVLLLLLLLLLLVVVVVVVVOSOSOSOOSOSOSOSOSOSOOSOSOSOSOOOOSOOSOSOSOSOSOSOSOSOOSOSOSOSOSOSOSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS VVVVVVVVVVVVVVVVVVVVLLLLLLLLVVVVVVVVVLVVVVVVVVLLLLLLLLVVVVVVLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLSSSSSSSSSSSSSSSSSSSSS GGGGGGGGGGGGGGGGGOOOOOOOOOOOOOOOOOOO GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGNNNNNNNNNNNNNNNNNNNNNNNNNIIIIIIIIIIIIIIIIIIIIISOLVING

NOTE For practice with adding

and subtracting fractions, go to

www.everydaymathonline.com.

EM3cuG3TLG2_689-693_U08L08.indd 691EM3cuG3TLG2_689-693_U08L08.indd 691 1/23/11 12:32 PM1/23/11 12:32 PM

692 Unit 8 Fractions

Number

of

Children

Number

of

Children

2 Ongoing Learning & Practice

� Reviewing the Line Plot WHOLE-CLASS ACTIVITY

Routine(Student Reference Book, pp. 79–81)

Use pages 79–81 in the Student Reference Book to review data landmarks. On the board, prepare a line plot with stick-on notes using this data: 42, 42, 43, 45, 45, 46, 46, 46, 46, 47, 47, 48, 48, 48, 48, 48, 50, 51, 53. To provide a context for children, suggest that the line plot shows the arm span measures in inches of a class of third graders.

42 43 44 45 46 47 48 49 50 51 52 53Number of Inches

Line plot of 3rd grade arm spans

Ask children to identify the maximum arm span 53 inches, the minimum arm span 42 inches, the mode 48 inches, and the range 11 inches from the line-plot data. Next, ask children to think of another way to find the median without removing the stick-on notes from the line plot. If no one suggests it, have volunteers cross out the first and last stick-on note from each end of the line plot over and over until one remains—this is the median arm span. 47 inches

42 43 44 45 46 47 48 49 50 51 52 53Number of Inches

The median arm span is 47 inches.

Have children imagine that you will put all the stick-on notes in a container and draw one out at random without looking. To practice comparing chances for two different events, pose the following:

● Compare the chance of drawing a note that says 42 with the chance of getting a note that says 50. There is a greater chance of drawing 42 than 50. Explain how you figured it out. There are two 42s and only one 50.

EM3cuG3TLG2_689-693_U08L08.indd 692EM3cuG3TLG2_689-693_U08L08.indd 692 1/14/11 9:28 AM1/14/11 9:28 AM

5. Show two ways a team can score

37 points in a football game.

3. Use simple drawings to show all of

the possible ways you can take

2 blocks from the bag.

Date Time

2. 6 feet � yards

feet � 18 inches

1�1

3� yards � feet

1�1

2� yards � inches54

4

2

6. Use your calculator. Pretend the

division key is broken. Solve this

problem.

Will, Wes, Sam, and Ameer want

to share $25 equally. How much

money will each person get?

Answer: $6.25

1. Draw two ways to show �3

2

.�

Math BoxesLESSON

8 � 8

22–24 246

Sample answers:1�

12

4. Tara frosted �4

5� of the cupcakes.

What fraction of the cupcakes

is not frosted?

Did she frost more or less than �1

2�

of the cupcakes?

If there were 20 cupcakes in all,

how many did she frost?

16 cupcakes

more

�15

3 1 2 22 3 1 1

Write a number model:

16 17

(3 � 7) � 6 � (2 � 3) �

(2 � 2) � 37; (2 � 7) �

(3 � 6) � 3 � 2 � 37

Sample answer:7 6 3 2

points points points points

Math Journal 2, p. 202

Student Page

Name Date Time

Fraction Number StoriesHOME LINK

8�8

In class we have been solving many kinds of fraction number stories. If some of these Home Link problems seem difficult, encourage your child to model them with pennies or draw pictures to help solve them.

Please return this Home Link to school tomorrow.

Family Note

22–24

Solve these fraction stories. Use pennies, counters, or pictures to help.

1. Elizabeth bought a dozen eggs. She dropped her bag on the

way home, and 2

_ 3 of the eggs broke. How many eggs broke? 8 eggs

2. Katie mowed 3

_ 4 of the lawn before lunch. What

fraction of the lawn did she have to finish after lunch? 1

_ 4 of the lawn

3. Donnie lives 1 mile from school. One day he walked 1

_ 2 of the way to school

when he remembered he had to return home to get a book.

When he finally made it to school, how far did he walk in all? 2 miles

4. Sheridan made 4 trays of cookies. She took 2 trays to school for her

classmates. She took 3

_ 4 of a tray of cookies to her

teacher. How many trays of cookies did Sheridan have left? 1

1

_ 4 trays

5. Jackson needed 2 pints of milk for his recipe. If he had one gallon of milk

in the refrigerator, how much did he use?

(Hint: 1 gallon = 4 quarts, and 1 quart = 2 pints) 1

_ 4 gallon

Write these problems on the back of this page. Solve and

show your work.

6. 2,083 + 4,678 =

7. 6,714 - 3,806 =

8. 4,762 + 4,762 = 9,524

2,908

6,761

PracticeUnit

EM3MM_G3_U08_237-266.indd 262 1/18/11 1:04 PM

Math Masters, p. 262

Home Link Master

Lesson 8�8 693

● Compare the chances of drawing 42 and 47. The chances are equal because there are two 42s and two 47s.

● Compare the chances of drawing 46 and 48. There is a greater chance of drawing 48 because there are five 48s and four 46s.

● Compare the chances of drawing 48 or a number larger than 48. There is a greater chance of drawing 48 because there are five 48s and only three numbers larger than 48.

� Math Boxes 8�8 INDEPENDENTACTIVITY

(Math Journal 2, p. 202)

Mixed Practice Math Boxes in this lesson are paired with Math Boxes in Lesson 8-6. The skill in Problem 6 previews Unit 9 content.

Writing/Reasoning Have children draw or write an answer to the following: In Problem 4, is 1 __ 5 more or less

than 1 _ 2 ? Use >, <, or = to compare the two fractions. 1 __ 2 > 1 __ 5 or 1 __ 5 < 1 __ 2 How do you know? Sample answer: 1 __ 5 is less than 1 _ 2 because 1 of 5 equal parts is less than 1 of 2 equal parts.

� Home Link 8�8 INDEPENDENTACTIVITY

(Math Masters, p. 262)

Home Connection Children solve fraction number stories like those in the lesson. They solve multidigit addition and subtraction problems.

3 Differentiation Options

ENRICHMENT SMALL-GROUP ACTIVITY

� Solving Math Curse 15–30 Min

Number StoriesTo apply children’s understanding of fraction concepts, read Math Curse and identify and solve the fraction problems in the story. Have children write their own fraction number stories based on daily activities, like those in Math Curse. The class can then discuss and solve these stories. Consider assembling the stories into a class book.

EXTRA PRACTICE SMALL-GROUP ACTIVITY

� Minute Math+ 5–15 Min

To offer children more experience with fractions, see the following pages in Minute Math+: pp. 86, 90, 92, and 155.

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