1. Lesson 1.2 Order of Operations
Algebra 1
Lesson 1.2 Order of Operations

2. Warm-up (IN YOUR NOTEBOOK)
Write a expression or equation from the phrase.
7 less than the product of 3 and a number
3 times n minus the quotient of t and 5 is 15
If I raise my hand and count to four what should you do?
Who gets to open the door?

3. Answers to Homework (CHECK THEM)
21) r=13n 22)C= 8.5n 23)t=.4n 24)p=8n 25)9+k-7 26)5n )37t )3b/4.5 29)15+ (60/w)
30)7-3v
31)5m-(t/7)
32)(p/14)+(q/3)
33)8-9r
43)a)d=drop height
f=height of bounce
f= (1/2)d
b) 10 ft

4. The Coordinate Plane
You need to know how to …. 1) Label the quadrants and axes 2) Plot points (x,y) a) e (1,6) b) f (-3,2) c) g (4,-1) d) h (-2,-3) 3) Identify points a) a b) b c) c d) d
(-8,-2)
(2,3)
(0,-3)
(6,-5)

5. Scatter Plots and Correlation
Positive
______ correlation No
Negative
______ correlation
______ correlation

6. 1.2 Exponents and Order of Operations
What does it mean to Simplify ?
What does it mean to evaluate?
Exponent Vocabulary: 4 24
base: _______ Exponent: ______ Power:_____
X3 base: _______ Exponent: ______ Power:_____ 2 x 3 X3
Write in exponential form .
1) 5·x·x·x·x·x ) 3·4·a·a·a

7. Please Excuse my Dear Aunt Sally
Order of Operations
P E MD AS
Parenthesis (Grouping Symbols)
Exponents
Multiplication, division (left to right)
Addition, subtraction (left to right)
Please Excuse
my Dear Aunt Sally

8. Why do you need an Order of Operations?
3(5)+14÷2
15+14÷2
15+7 22
3(5)+14÷2
15+14÷2
29÷2
14.5

9. Order of Operations
Simplify. 1) 2)

10. Order of Operations
Simplify Evaluate 4)
When x= 5 and z = 6

11. Order of Operations Activity
Each Group will get a pack of 15 note cards.
Fan and Pick
1st person fan out the cards
2nd person pick a card
Everyone solve the problem (write it on your paper)
3rd person share the correct answer
If you did not get a correct answer check with your group, if you all can’t determine how to get the answer, call me over.
1st person rotates around with every problem.
Continue for all 15 problems or until I stop you.

12. Homework: See your Agenda
JOURNAL
What is the order of operations ?
What is a good way to remember the order of operations?
Why do you think that mathematicians decided on an order of operations?
Homework: See your Agenda