Evaluating Algebraic Expressions 4-1Exponents Exponential Notation.
21 st Century Lessons Evaluating Expressions The Order of Operations 1.
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Transcript of 21 st Century Lessons Evaluating Expressions The Order of Operations 1.
Warm Up/Do NowOBJECTIVE: SWBAT indentify and begin to follow the order of operations when evaluating expressions.
Agenda
2
Evaluate:4310
647
3520
)21(9
234
1) 2)
3) 4)
5)
34 1
5 3
13
Scaffolding
Agenda:
1) Warm Up 2) Launch
3) Explore
4) Practice
5) Assessment/Exit Slip
4
Marvin’s Trick- Independent
Agenda
The Four Students Problem- Partners
Whole class
Partners
Independent
OBJECTIVE: SWBAT indentify and begin to follow the order of operations when evaluating expressions.LANGUAGE OBJECTIVE: SWBAT to discuss and interpret why the order of operations are important and identify the words expression and evaluate.
Independent
Discussion-Lesson-
Notes- Recourses for Your Notebook- Independent
Launch- Marvin’s Trick
Agenda
5
has a challenge for you!Marvin the “Amazing Math Magician”
Hey class, bet you can’t make 75 with the numbers:
3 7 10 15
But, you must use all 4 numbers only once.
You can use any operation you like addition, subtraction, multiplication or division, more than once, and in any order you choose.
6
3 7 10 15
How did you make 75 with the 4 numbers?
Launch- Marvin’s Trick
Agenda
7
A way to make
3 7 10 15
75
107 31575
70 5
using
Expression??????This is a way to write the work you did as one math expression.
Numbers and symbols grouped together that show the value of something.
Launch- Marvin’s Trick
Agenda
Explore- The Four Students Problem
8
Agenda
Marvin challenged four students to evaluate this problem 2346
Your task with your partner is to determine how the students obtained their answer.
900346 2 Juan150346 2 Melinda
42346 2 Shawn
Student’s results90346 2 Ashley
Support your response with evidence, by listing the operations in the order in which the student did them.Your group is responsible for 2 or 4 students.
Evaluate?
10
Marvin challenged four students to evaluate this problem.
JuanMelinda
Shawn
Click names
Ashley
Agenda
Online
Calculator
All studentsand summary
PC Users
Next slide
Discussion
Resources for Your Notebook
17
Agenda
The Order of Operations
42
1)
Think back to the warm up. Is there a problem that contained any symbol Shawn didn’t use?
1) Parentheses or Grouping Symbols
Click to open warm up.
2346 Shawn’s Work
2) Exponents
946 9
3) Multiplication/Division
36636
4) Addition/Subtraction(Left to Right)
(Left to Right)
19
Practice- Partners
1) 2) 20 ÷ (6 – 1)
3) 10 + 23 – 5 4) 9 + 3 + 9 ÷ 3
5) 6 + 10 ÷ 2 – 1 6) 2 + 5 x 6 ÷ 2
Directions: Using the Order of Operations, evaluate the following expressions.
Agenda
4773
Let’s do number 1 and 2 together!!
20
Directions: Using the Order of Operations, evaluate the following expressions.
Practice
Scaffolding
1
4
4773
48
3 41)
Agenda
22
Directions: Using the Order of Operations, evaluate the following expressions.
Practice
)5(
4
)16(20 20
2)
AgendaScaffolding
24
Practice
1) 2) 20 ÷ (6 – 1)
3) 10 + 23 – 5 4) 9 + 3 + 9 ÷ 3
5) 6 + 10 ÷ 2 – 1 6) 2 + 5 x 6 ÷ 2
Directions: Using the Order of Operations, evaluate the following expressions.
8 4
13 15
10 17
Agenda
4773
Assessment/Exit Slip
25
2423 Amy
4315 Evaluate :1) 341 2 2)
3)Who is correct?
245220
400
1623 32335
Agenda
Jamal2423
3 14
Woops!! Amy added first