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November 14 Algebraic Expressions Day 2.notebook November 14, 2017
Tuesday November 14, 2017
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
November 14 Algebraic Expressions Day 2.notebook November 14, 2017
November 14 Algebraic Expressions Day 2.notebook November 14, 2017
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.
6.EE.2 Write, read, and evaluate expressions in which letters stand for numbers.
a. Write expressions that record operations with numbers and with letters standing for numbers.
b. Identify parts of an expression using mathematical terms (sum, term, product, factor, quotient, coefficient); view one or more parts of an expression as a single entity.
LEQ: What is algebra?
November 14 Algebraic Expressions Day 2.notebook November 14, 2017
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 + 5coefficient
variable(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 14 Algebraic Expressions Day 2.notebook November 14, 2017
Example:
12 times the number of feet
New Information...
Vol.2 Page 462
2x + 5coefficient
variable(any letter can me used as a variable)
operation
constant
**
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?
November 14 Algebraic Expressions Day 2.notebook November 14, 2017
Example:
$3 more than four times the cost of a pretzel
New Information... 2x + 5coefficient
variable(any letter can me used as a variable)
operation
constant
Vol.2 Page 463
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?
November 14 Algebraic Expressions Day 2.notebook November 14, 2017
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?
November 14 Algebraic Expressions Day 2.notebook November 14, 2017
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 14 Algebraic Expressions Day 2.notebook November 14, 2017
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?
November 14 Algebraic Expressions Day 2.notebook November 14, 2017
1)
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Exit Ticket
