Math Expressions

How does it all work together…?

Whys…..

• US students perform near the bottom by the end of high school.

• Singapore Math• NCTM highlights the need for a

well defined curriculum• Movement toward Conceptual

Math• Catawba County is training every

teacher in Math Foundations

Why?

Number &

Operatio

ns

Geometry

Algebra

Data Analysis and Probability

Measurem

ent

The DNA of Math

Measurem

ent

Number &

Operatio

n

s

Data Analysis and ProbabilityGeometry

Algebra

Try for 100

• Two players• Take turns rolling a die• Each must decide if the number will

go in the ones or tens place• The winner is the one that is closest

to 100 without going over.

Try for 100Tens Ones

1.

2.

3.

4.

5.

6.

Make 10

• Roll 10 dice• Make as many combinations as

you can that equal 10. Write the number sentence for each combination.

• The sum of the dice left over becomes your score.

• After 5 rolls, the player with the lowest score wins.

Addition

487

+257

400 + 80 + 7

+ 200 + 50 + 7

744

1 1

600 + 130 + 14

25

+43

68

35

+5691

20 + 5

40 + 3

60 + 8

30 + 5

50 + 6

80 + 11

Proof Drawings

Addition

42

+54

96

40 + 2

+50 + 4

90 + 6

Subtraction 243

-122

121

100 + 20 + 1 =121

200 + 40 + 3

100 + 20 + 2

Subtraction

63

- 26

37

5 13

Subtraction

43

- 26

17

40 + 3

- 20 + 6

10 + 7 = 17

3010 + 3 = 13

Multiplication

6

1200

12

80

32

x 46

40

180

1200

180

80

+ 12

1,472

30 2

Multiplication

53

x 4750 + 3

40

+

7

2,000 120

350 21

2,000

350

120

21

2, 491

Division16 269

269

- 160

109

16

10

109

- 80

29

5

29

- 16

13

1

16 r. 13

Division

269

- 150

119

119

- 75

44

44

- 30

14

15 269

15

10

15

5

15

2+ + 17 r. 14

=