• 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

Corny Joke of the Day

Why are baseball players so rich?

Because they play on diamonds

Tests

Take your time Check your answers

When done, work on tier 3 planning

Exponents

Part 1: A little Math story brought to you by…..

Ms. Evans

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……

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…..

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…..

Group Investigation

The teddy bears kept MULTIPLYING fast. How many

teddy bears did he have after 6 hours?

Table of contents Unit #2 Unit Name: Exponents, O of O, Scientific Notation, and Square Roots

Date: 8/24Section: 1-3Title: ExponentsPages: 1-

Let’s think about this….

Let’s illustrate it!

1 hr2 hr

3 hr4 hr

5 hr

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?

Vocabulary Review

1. Power2. Base3.Exponent

5

2

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

Can You Finish the Table?

Hours Number of Teddy Bears POWER

1 22 43 84 165 32

1

2

Part 2. Geometry Application

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

Part 3. Reading and Exponents

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

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

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

Part v. Writing Powers

Exponential Form: Use Bases and exponents

Standard: Find the actual number

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

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!

Standard Form

a. 15 Squared

b.

c.

d.

101

14

30

1,236

Any Questions?!?!?!?!

WORKSHEET 1-3 EXPONENTS

Homework