Exponents day 1
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Transcript of Exponents day 1
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• Look at your study guide
• Write Down Homework• Complete Warm Up
Wednesday, August 24th
1. If Prime factorization = 2 x 5 x 4, what is the number?
2. In the Prime factorization of 40, 2 is a factor how many times?
Warm Up
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Corny Joke of the Day
Why are baseball players so rich?
Because they play on diamonds
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Tests
Take your time Check your answers
When done, work on tier 3 planning
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Exponents
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Part 1: A little Math story brought to you by…..
Ms. Evans
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The Magic Toy Machine
One day, a long time ago, in a far away land lived a crazy scientist. Everyone thought he was a little strange, but he did have a lot of experiments go wrong……
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He wanted to do something right and help out a local toy store. See, the store couldn’t keep up with the demands of the new life like teddy bear that attacked predators of young children. So, he decided to build a machine that would keep up with this awesome new invention…..
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After months of slaying away, his machine (the kookalamoo) was ready! His machine started with 1 teddy bear, put it through the machine and an hour later it came out as two. He then put those two in and in hour later each of those made two more, and so on and so on…..
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Group Investigation
The teddy bears kept MULTIPLYING fast. How many
teddy bears did he have after 6 hours?
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Table of contents Unit #2 Unit Name: Exponents, O of O, Scientific Notation, and Square Roots
Date: 8/24Section: 1-3Title: ExponentsPages: 1-
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Let’s think about this….
Let’s illustrate it!
1 hr2 hr
3 hr4 hr
5 hr
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Let’s make a table!
Hours Number of Teddy Bears
1 22345
• Describe what is happening in this data?• How could we write it using exponents?
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Vocabulary Review
1. Power2. Base3.Exponent
5
2
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A power is an expression written with an exponent and a base• 3² is an example of a power.
3; The base is the
number that is used as a
factor
32 2; The exponent tells how many times you
should use 3 as a factor
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Can You Finish the Table?
Hours Number of Teddy Bears POWER
1 22 43 84 165 32
1
2
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Part 2. Geometry Application
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a. When a number is raised to the second power, we usually say it is “squared.”
S
S
b. When a number is raised to the third power, we usually say its “cubed.”
S
SS
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Part 3. Reading and Exponents
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3 to the second power, or 3 squared
Multiplication Power ValueWords
3 3 3
3 3
3 3 to the first power
3 to the third power, or 3 cubed
3 to the fifth power
9
27
81
243
31
Reading Exponents
32
33
34
353 3 3 3 3
Multiplication Power ValueWords
3 3 3 3
3
3 to the fourth power
331
Reading Exponents
Multiplication Power ValueWords
Reading Exponents
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You Try!!! Write each power in words, repeated
multiplication, and find it’s value!
Power Words Repeated Multiplicati
on
Value
2
43
586
10
7
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Part IV. The Power of ZeroHours Number of Teddy Bears POWER
01 22 43 84 165 32
1
2
• How many teddy bears in the beginning hours?!??• Anything raised to the zero = 1
2
23
24
25
2
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Part v. Writing Powers
Exponential Form: Use Bases and exponents
Standard: Find the actual number
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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
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Write each expression in exponential form.
c. 7 7 7
d. 6 6 6 6 6 67 is a factor 3 times.
73
6 is a factor 6 times.
66
This rocks!
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Standard Form
a. 15 Squared
b.
c.
d.
101
14
30
1,236
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Any Questions?!?!?!?!
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WORKSHEET 1-3 EXPONENTS
Homework