-
November 30 Intro to Expressions.notebook
1
November 30, 2018
Friday, November 30, 2018
Warm Up1. The table below shows the low temperatures for three
days in a town. (NS.7)
Day Low Temperature
Thursday 9 (°C)Friday -1 (°C)
Saturday -5 (°C)
How much did the temperature change from Thursday to Saturday?
(Use a vertical number line to plot the change.)
2. What is the distance between (-4, 2) and (-4, -3)? (NS.8)
3. How many terms are in the expression 4c + 3c - c + 6?
(EE.2)23
14 degree change 5 units 4 terms
-
November 30 Intro to Expressions.notebook
2
November 30, 2018
SWBAT read and write algebraic expressions by using mathematical terms to identify the parts of an expression and using the correct operation given the key word.
LEQ: What is algebra?
NC.6.EE.2 Write, read, and evaluate algebraic expressions.
> Write expressions that record operations with numbers and
with letters standing for numbers.
> Identify parts of an expression using mathematical terms
and view one or more of those parts as a single entity.
-
November 30 Intro to Expressions.notebook
3
November 30, 2018
New Information... Expressions
Numeric Expressions contain numbers and operations.Algebraic
Expressions contains numbers, at least one variable and at least
one operation.For example, the expression n + 2 represents the sum
of an unknown number and two.
Parts of an algebraic expression include:
2x + 5coefficientvariable
(any letter can me used as a variable)operation
constant
Example: x + 5y + 3x + 62
What are the coefficients?
What are the variables?
What is the constant?
What operations are given?
What are the terms?
-
November 30 Intro to Expressions.notebook
4
November 30, 2018
Example:
12 times the number of feet
New Information...
Vol.2 Page 462
2x + 5coefficientvariable
(any letter can me used as a variable)operation
constant
**
Vol.2 Page 463
PPT help if needed
-
November 30 Intro to Expressions.notebook
5
November 30, 2018
Example:
$3 more than four times the cost of a pretzel
New Information... 2x + 5coefficientvariable
(any letter can me used as a variable)operation
constant
Vol.2 Page 463
-
November 30 Intro to Expressions.notebook
6
November 30, 2018
Teacher Modeling
Teacher Follow Up•
What should you identify first in an algebraic expression?•
How can writing phrases as algebraic expressions help you solve problems?
Critical Thinking Questions:1 What information do we not know?2 How can you represent this unknown information?3 What letter will best represent what you do not know?4 What operation is represented by the given key words?Vol.2
Page 464
-
November 30 Intro to Expressions.notebook
7
November 30, 2018
Critical Thinking Questions:1 What information do we not know?2 How can you represent this unknown information?3 What letter will best represent what you do not know?4 What operation is represented by the given key words?
Collab. Practice
Write the verbal phrases as algebraic expressions:
1) two dollars less than the price of a movie ticket
2) five years more than her aunt's age
3) 2 less than 6 times the cat's weight
4) Write a verbal situation for the following algebraic expression: n 9
m 2
a + 5
6w 2
-
November 30 Intro to Expressions.notebook
8
November 30, 2018
Independent Practice
Today you will translate expressions using task cards. Your goal
is complete at least 15 in 20 minutes. Read each card and write the
expression. Use your notes as needed.
Write the answer beside the correct card number.
Critical Thinking Questions:1 What information do we not know?2 How can you represent this unknown information?3 What letter will best represent what you do not know?4 What operation is represented by the given key words?
-
Attachments
091316_exponents PPT.ppt
1-3
Exponents
Warm Up
Multiply.
1. 3 3 3
27
64
16
625
2. 4 4 4
3. 2 2 2 2
4. 5 5 5 5
1-3
Exponents
I can…learn to represent numbers by using exponents.
1-3
Exponents
Vocabulary
exponent
base
exponential form
1-3
Exponents
A number is in exponential form when it is written with a base
and an exponent.
73
= 7 7 7= 343
An exponent tells how many times a number called the base is
used as a factor.
Teacher Input
Base
Exponent
1-3
Exponents
Teacher Input
Exponential Form101
Read“10 to the 1st power”
Multiply10
Value10
1-3
Exponents
Teacher Input
Exponential Form102
Read“10 squared,” or “10 to the 2nd power”
Multiply10 10
Value100
1-3
Exponents
Teacher Input
Exponential Form103
Read“10 cubed,” or “10 to the 3rd power”
Multiply10 10 10
Value1,000
1-3
Exponents
Teacher Input
Exponential Form104
Read“10 to the 4th power”
Multiply10 10 10 10
Value10,000
1-3
Exponents
Additional Example 1: Writing Numbers in Exponential Form
Write each expression in exponential form.
A. 5 5 5 5
B. 3 3 3 3 3
5 is a factor 4 times.
54
3 is a factor 5 times.
35
Teacher Modeling
Copy in your notebook to use as models.
1-3
Exponents
Check It Out: Example 1
Write each expression in exponential form.
A. 7 7 7
B. 6 6 6 6 6 6
7 is a factor 3 times.
73
6 is a factor 6 times.
66
Collaborative Practice
1-3
Exponents
Additional Example 2: Finding the Value of Numbers in
Exponential Form
Find each value.
A. 26
B. 45
26
45
= 2 2 2 2 2 2
= 64
= 4 4 4 4 4
= 1,024
Teacher Modeling
Copy in your notebook to use as models.
1-3
Exponents
Check It Out: Example 2
Find each value.
A. 34
B. 25
34
25
= 3 3 3 3
= 81
= 2 2 2 2 2
= 32
Collaborative Practice
1-3
Exponents
Write each expression in exponential form.
1. 12 12 12
2. 9 9 9 9 9 9 9
Find each value.
3. 2024. 64
97
123
400
1,296
Independent Practice
When you finish, complete the secret message math sheet. You may
use your notes for the sheet if needed.
*
1-3
Exponents
1. Write the following in exponential form.
15 15 15
2. What is the value of 33 ?
Exit Ticket
Closing
*
1-3
Exponents
Standard Lesson Quiz
Lesson Quizzes
Lesson Quiz for Student Response Systems
SMART Notebook
Page 1: Nov 2-1:01 PMPage 2: CCSS & ObjectivePage 3: Teacher
InputPage 4: Teacher InputPage 5: Nov 30-7:01 PMPage 6: Teacher
ModelingPage 7: Collab PracticePage 8: Independent
PracticeAttachments Page 1
