math 5 patterns & expressions instructor: mrs. tew turner
DESCRIPTION
Math Warm-up An airplane left Seattle, Washington, USA at 9:45 A.M. and arrived in Los Angeles at 1:15 P.M. How long was the flight? Try to do this mentally.TRANSCRIPT
Math 5Patterns & Expressions
Instructor: Mrs. Tew Turner
In this lesson we will learn how you can use patterns
to show relationships.
Math Warm-up
An airplane left Seattle, Washington, USA at 9:45 A.M. and arrived in Los Angeles at 1:15 P.M. How long was the flight?
Try to do this mentally.
Math Warm-up-ANSWERAn airplane left Seatle, Washington, USA at 9:45 A.M. and arrived in Los Angeles at 1:15 P.M. How long was the flight. 3 ½ hours
How did you do? You can count hours with fingers and then the left over minutes was changed to show a fraction…30 min. out of 60 min = 1/2
In this lesson we will answer the question:
How do I evaluate patterns and expressions to find the unknown variables?
Vocabulary Review Algebraic expression- a mathematical phrase involving variables, numbers, and operations.
Variable- is a letter or symbol that represents an unknown amount that can change.
Vocabulary Review
Operations – Addition, Subtraction, Multiplication, and Division
Represent – a symbol to replace something else.
Patterns & ExpressionsDianesta wanted to buy tickets to the concert for herself and some friends. What is the total cost of all the tickets?Let t = the number of tickets purchased.
What is it that we need to know or want to find out?
Patterns & ExpressionsDianesta wanted to buy tickets to the concert for herself and some friends. What is the total cost of all the tickets?
x4+4
x4+4
x4+4
# of Tickets
Total Cost
2 8.003 12.004 16.005 20.00t 4 x t
Patterns & Expressions
x4+4
x4+4
x4+4
# of Tickets
Total Cost
2 8.003 12.004 16.005 20.00t 4 x t
Dianesta saw a pattern: Each ticket increased by 4 dollars.
Patterns & ExpressionsDianesta saw a pattern: Each ticket increased by 4 dollars.
She wrote an algebraic expression to show the relationship between the number of tickets and the total cost.
The total cost of tickets for any number of friends can be represented by the algebraic expression: 4 x t.
Document Camera
Get your notebook
and pencil ready.
Make sure you
have the Lesson #
and date on your
page.
Patterns & Expression
1. Megan and Tenai have the same birthday, but Tenai is 6 years older. In the table, m is Megan’s age and m + 6 is Tenai’s age. Complete the table.
m 3 5 ?
M + 6 ? ? 14
Patterns & Expression
2. When Megan was 5 years old, how old was Tenai?3. What was Megan’s age when Tenai was 14?
m 3 5 ?
M + 6 ? ? 14
Patterns & Expression
4. Writing to ExplainIf you know Tenai’s age, how can you find Megan’s age?
m 3 5 ?
M + 6 ? ? 14
Patterns & Expression
Handout: Problem Solving with using tablesfor Document Camera.
To be used to complete for your homework after reviewing a few problems together.
In your Math NotebookIndependent Practice
Evaluate each expression for n = 5 and n = 2.
1. 40 n
2. 4.5 + n 3. 16n
4. 50 – n5. 8n
Look for patterns to solve for the unknown quantities in algebraic expressions.Step 1: Look for the change that is consistent to create a predictable pattern. Step 2: Solve for the unknown variable to find the correct quantity.
Lesson Review
Quick Check
Complete the table and look for the pattern.
What is the rule?
In your Math Notebook
Baskets made
5 10
ShotsAttempted
20 40 60 80 100
Quick Check-ANSWERS
Complete the table and look for the pattern.
The rule: s ÷ 4 = Baskets made
In your Math Notebook
Baskets made
5 10 15 20 25
ShotsAttempted
20 40 60 80 100
Today you learned how to use patterns to show relationships.
Good Work with this
lesson.