module 10 - mrs. wendtmrswendt.weebly.com/uploads/8/7/1/9/8719318/10.1.pdflesson quiz write each...

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10.1.notebook 1 January 10, 2017 Jan 208:39 AM Module 10 Lesson 1: Modeling and writing Expressions Lesson 2: Evaluating Expressions Lesson 3: Generating Equivalent Expressions Jan 208:39 AM Module 10 lesson 1: Modeling and Writing Expressions Objective: Write expressions that record operations with numbers and with letters, standing for numbers Jan 208:44 AM Algebraic Expression: an expression that contains one or more variable and may also contain operation symbols ** NO equal sign ** Variable: is a letter or symbol used to represent an unknown or unspecified number. The value of a variable may change. Constant: A specific number whose value does not change g+5 Jan 209:40 AM In multiplication and division expressions Usually written without the symbol X or 3xn 3 n 3n 3n n3 3 n Jan 209:47 AM Operations Addition Subtractions Multiplication Division Words Jan 209:47 AM Operations Addition Subtractions Multiplication Division Words added to plus sum more than subtracted from minus difference less than times multiplied by product groups of divided by divided into quotient

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Page 1: Module 10 - Mrs. Wendtmrswendt.weebly.com/uploads/8/7/1/9/8719318/10.1.pdfLesson Quiz Write each phrase as an algebraic expression: z times 5 6 plus n 1. 2. 6 6/7 Use a bar model to

10.1.notebook

1

January 10, 2017

Jan 20­8:39 AM

Module 10

Lesson 1:  Modeling and writing Expressions

Lesson 2:  Evaluating Expressions

Lesson 3:  Generating Equivalent Expressions

Jan 20­8:39 AM

Module 10 lesson 1:  Modeling and Writing Expressions

Objective:  Write expressions that record operations with numbers and with letters, standing for numbers

Jan 20­8:44 AM

Algebraic Expression:  

an expression that contains one or more variable and may also contain operation symbols

** NO equal sign **

Variable:  

is a letter or symbol used to represent an unknown or unspecified number.  The value of a variable may change.

Constant:  

A specific number whose value does not change

g + 5

Jan 20­9:40 AM

In multiplication and division expressions

 Usually written without the symbol X or 

3 x n 3    n3n3  nn  3

3 n

Jan 20­9:47 AM

Operations Addition Subtractions Multiplication Division

Words

Jan 20­9:47 AM

Operations Addition Subtractions Multiplication Division

Words

added to

plus

sum

more than

subtracted from

minus

difference

less than

times

multiplied by

product

groups of

divided by

divided into 

quotient

Page 2: Module 10 - Mrs. Wendtmrswendt.weebly.com/uploads/8/7/1/9/8719318/10.1.pdfLesson Quiz Write each phrase as an algebraic expression: z times 5 6 plus n 1. 2. 6 6/7 Use a bar model to

10.1.notebook

2

January 10, 2017

Jan 20­9:47 AM

Write each phrase as an algebraic expression

The sum of 7 and x

The quotient of z and 3

Jan 20­10:12 AM

Write each phrase for each expression

11x

8 ­ y

1

1/7

Write a phrase for each algebraic expression.

9 + y  

Jan 20­10:13 AM

Complete page 262 numbers 1­6 in your workbooks

Jan 10­11:49 AM

Complete hand out side 1

Jan 20­11:21 AM

Modeling Algebraic Expressions

7 + x

Page 3: Module 10 - Mrs. Wendtmrswendt.weebly.com/uploads/8/7/1/9/8719318/10.1.pdfLesson Quiz Write each phrase as an algebraic expression: z times 5 6 plus n 1. 2. 6 6/7 Use a bar model to

10.1.notebook

3

January 10, 2017

Jan 20­11:29 AM

Modeling Algebraic Expressions

Z

3

Jan 20­11:30 AM

Modeling Algebraic Expressions

t ­ 2

Jan 20­11:30 AM

Modeling Algebraic Expressions

4y

Jan 20­12:00 PM

Comparing Expressions using Models

Equivalent means equal

x + 2 = x + 1 + 1

Jan 20­1:31 PM

Kelly and Charlotte started the day with the same amount of money.  Kelly spent 5 dollars on lunch.  Charlotte spent 3 dollars on lunch and 2 dollars on a snack after school.  Do Kelly and Charlotte have the same amount of money left?

Write and algebraic expression to represent the money Kelly has left.  Represent the expression with a model.

x ­ 5

Write and algebraic expression to represent the money Charlotte  has left.  Represent the expression with a model.

x ­ 3 ­ 2

Jan 20­1:38 PM

Complete number 9 on page 264

Page 4: Module 10 - Mrs. Wendtmrswendt.weebly.com/uploads/8/7/1/9/8719318/10.1.pdfLesson Quiz Write each phrase as an algebraic expression: z times 5 6 plus n 1. 2. 6 6/7 Use a bar model to

10.1.notebook

4

January 10, 2017

2

2/7

Use a bar model to represent the expression.

5 + y 

3

3/7

Amanda and Stuart began the week with the same amount of money. Amanda paid $7 to go to the movies. Stuart spent $4 on snacks and $3 on a pen. Write algebraic expressions and draw bar models to represent the money each has left at the end of the week. Do Amanda and Stuart have the same amount of money left?

4

4/7

Tickets to the aquarium cost $27 per person. Write an expression to represent the total cost of tickets for a group of people.

A     

Kelly has some savings. After mowing two lawns on Saturday, she adds $40 to her savings. How much money has Kelly saved?    

B     

5

5/7

Lesson Quiz

Write each phrase as an algebraic expression:       z times 5       6 plus n 

1.  

2.    

6

6/7

Use a bar model to represent 4 + m.3.  

7

7/7

Lesson Quiz

Jan and Jackie check out the same number of library books. Jan turns in 4 books after 3 weeks. Jackie returns 2 books that week and 4 books later. Write algebraic expressions and draw bar models to represent the books Jan and Jackie have left. Do they have the same number of books left? Justify your answer.

4.  

Modeling and Writing Expressions                                                                                                                       

Page 5: Module 10 - Mrs. Wendtmrswendt.weebly.com/uploads/8/7/1/9/8719318/10.1.pdfLesson Quiz Write each phrase as an algebraic expression: z times 5 6 plus n 1. 2. 6 6/7 Use a bar model to

10.1.notebook

5

January 10, 2017

Jan 20­1:45 PM

Complete page 265 all

a1

the quotient of z and 5  

1/7

Modeling and Writing Expressions                                                                                                                       

Write a phrase for each algebraic expression.

Additional Example 1

9 more than y    

9 + y  

a2

2/7

Additional Example 2

Modeling and Writing Expressions                                                                                                                       

Use a bar model to represent the expression.

5 + y 

a3

3/7

Additional Example 3

Modeling and Writing Expressions                                                                                                                       

Amanda and Stuart began the week with the same amount of money. Amanda paid $7 to go to the movies. Stuart spent $4 on snacks and $3 on a pen. Write algebraic expressions and draw bar models to represent the money each has left at the end of the week. Do Amanda and Stuart have the same amount of money left?

The models are equivalent, so Amanda  and Stuart have the same amount of money left. 

a4

4/7

Modeling and Writing Expressions                                                                                                                       

Tickets to the aquarium cost $27 per person. Write an expression to represent the total cost of tickets for a group of people.

27x    

y + 40  

A     

B     Kelly has some savings. After mowing two lawns on Saturday, she adds $40 to her savings. How much money has Kelly saved?    

Additional Example 4

a5

5/7

Lesson Quiz

Write each phrase as an algebraic expression:       z times 5       6 plus n 

1.  

2.    

Modeling and Writing Expressions                                                                                                                       

5z, 6 + n  

8 multiplied by y, 6 divided by m 

Page 6: Module 10 - Mrs. Wendtmrswendt.weebly.com/uploads/8/7/1/9/8719318/10.1.pdfLesson Quiz Write each phrase as an algebraic expression: z times 5 6 plus n 1. 2. 6 6/7 Use a bar model to

10.1.notebook

6

January 10, 2017

a6

6/7

Lesson Quiz

Use a bar model to represent 4 + m.3.  

Modeling and Writing Expressions                                                                                                                       

a7

7/7

Lesson Quiz

Jan and Jackie check out the same number of library books. Jan turns in 4 books after 3 weeks. Jackie returns 2 books that week and 4 books later. Write algebraic expressions and draw bar models to represent the books Jan and Jackie have left. Do they have the same number of books left? Justify your answer.

4.  

Modeling and Writing Expressions                                                                                                                       

No. Sample answer: The expressions  are not equivalent. If b = the number  of books each checked out, Jan's  books = b – 4 and Jackie's   books = b – 2 – 4. 

Jan 20­1:45 PM