First Day WORKSHOP

ALA: Pre-AlgebraUnit 1 Whole Numbers

You be the judge!

TRUE or FALSE?

5 > 3 TRUE

4 < 4FALSE

Population of Missouri > Population

of Illinois

12,830,6325,988,927

FALSE

Number ofchickens in the world <

Number of people in the world

Number ofchickens in the world <

Number of people in the world

19,000,000,000 7,035,000,000

FALSE

IMPORTANT WORDS

SUM: the answer you get when you add

4 + 7 = 11

FACTORS: numbers that get multiplied

4 x 7 = 28

PRODUCT:the answer you get when

you multiply

4 x 7 = 28

DIFFERENCE:the answer you get when you

subtract

7 - 4 = 3

QUOTIENT:the answer you get when you

divide

8 ÷ 4 = 2

EXPONENTS

5 x 5 x 5 x 5 x 5 x 5 x 5 x 5

58

52

25

23

8

15

1

42

16

Heart Attack Parentheses

Head Injury Exponents

Labor Multiply/Divide

Cut Finger Add/Subtract

A Story to Introduce

Order of Operations-- Cut finger-- Head injury-- Heart attack-- Labor

PLEASE EXCUSE

MY DEAR AUNT SALLY

10 + 3 x 2

16

10 – 3 + 2

9

(7 – 4)2

9

3(7 – 2)2

75

1 + 3(7 – 2)2

76

OUR HERO ZERO

HERO

0

8674 + 0

8674ZERO IS THE ADDITIVE IDENTITY. ADDING ZERO TO A NUMBER DOES NOT CHANGE THE NUMBER.

8674 - 0

8674

8674 X 0

0WHEN YOU MULTIPLY BY 0, YOU ALWAYS GET 0.

8674 ÷ 0

UNDEFINED

DON’T DO IT!

FACTORS AND MULTIPLES

FACTORS OF 10:

MULTIPLES OF 10:

2 X 5 1 X 10

10, 20, 30, 40, 50, ...

FACTORS AND MULTIPLES

FACTORS OF 2:

MULTIPLES OF 2:

2, 4, 6, 8, 10, 12,...

1 X 2

Multiples of 2are called EVEN numbers!

2 is a PRIME number. Its only factors are 1 and itself.

FACTORS AND MULTIPLES

FACTORS OF 6:

MULTIPLES OF 6:

2 X 3 1 X 6

6, 12, 18, 24, 30, ...

6 is a COMPOSITE number. It has more factors than just 1 and itself.

FACTORS AND MULTIPLES

FACTORS OF 20:

MULTIPLES OF 20:

2 X 10 5 X 4

20, 40, 60, 80, 100, ...

1 X 20

Which numbers are PRIME?

21

5

912

3

21

11

13

6

78

15

17

10

Which numbers are PRIME?

21

5

912

3

21

11

13

6

78

15

17

10

Which numbers are COMPOSITE?

21

5

912

3

21

11

13

6

78

15

17

10

Which numbers are COMPOSITE?

21

5

912

3

21

11

13

6

78

15

17

10

Which numbers are neither PRIME nor COMPOSITE?

21

5

912

3

21

11

13

6

78

15

17

10

Which numbers are neither PRIME nor COMPOSITE?

21

5

912

3

21

11

13

6

78

15

17

10

Which numbers are EVEN?

21

5

912

3

21

11

13

6

78

15

17

10

Which numbers are EVEN?

21

5

912

3

21

11

13

6

78

15

17

10

Which numbers are MULTIPLES of 3?

21

5

912

3

21

11

13

6

78

15

17

10

Which numbers are MULTIPLES of 3?

21

5

912

3

21

11

13

6

78

15

17

10

Which numbers are DIVISIBLE by 5?

21

5

912

3

21

11

13

6

78

15

17

10

Which numbers are DIVISIBLE by 5?

21

5

912

3

21

11

13

6

78

15

17

10

FACTOR TREES:

breaking a number

down to its PRIME factors

Make a Factor Tree to break the number 100 into its prime factors

MEAN, MEDIAN,

and MODE

How many children do you have?

MEANIt’s MEAN to

make you find the MEAN!

You have to add, then divide!

MEDIANThe median strip is the middle of the

road. Write the numbers in order and pick the middle one!

MODEThe MOST POPULAR

number!

MILITARY TIME

midnight

1:00 AM

2:00 AM

3:00 AM

4:00 AM

5:00 AM

6:00 AM

7:00 AM

8:00 AM

9:00 AM

10:00 AM

11:00 AM

12:00 NOON

1:00 PM

2:00 PM

3:00 PM

4:00 PM

5:00 PM

6:00 PM

7:00 PM

8:00 PM

9:00 PM

10:00 PM

11:00 PM

0000

0100

0200

0300

0400

0500

0600

0700

0800

0900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

2100

2200

2300

1632

4:32 PM

0448

4:48 AM

7:58 PM

1958

Resources:PicturePicture on slide 2Man is available in the public domain under CC0 Public Domain; Color changed from original work.

Picture on slide 8members is available in the public domain under CC0 Public Domain; Word bubbles added.

Picture on slide 14PSM V78 D337 Archimedes is available in the public domain

Pictures on slide 19MASH Cast 1977 is available in the public domainDECONference triage tag by Steve Mann is licensed under CC BY-SA 3.0

Picture on slide 20Dame Edna by Eva Rinaldi is licensed under CC BY-SA 2.0

Clip Art on slide 26Hero is available in the public domain under CC0 Public Domain; Text added.

Clip Art on slide 30No admittance sign, created by Stephen Almond, is licensed under CC BY-SA 3.0

Clipart on slide 47Christree by Christreat is licensed under CC BY-SA 4.0

Picture on slide 50My dogs 2 is available in the public domain

Resources (cont.)Picture on slide 51Angry Child by Gerry Thomasen is licensed under CC BY 2.0

Picture on slide 52Controlled-Access Highway by Haljackey is licensed under CC BY-SA 3.0

Picture on slide 53Angelina Jolie Brad Pitt Cannes by Georges Biard is licensed under CC BY-SA 3.0

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