Chapter 1- Number and Arrays

Even and Odd Numbers

100

Is 8 even or odd?

Even 

200

Is 11 even or odd?

Odd

300

Is 22 even or odd?

Even 

400

You see an even number of bikes. There are more than 12 but less than 15. How many bikes are there?

14

500

10+13=? 

is "?" Even or Odd

23 = Odd

Model Even and Odd Numbers

100

Model the number below and tell if it is even or odd.

9=____+____

5+4

odd

200

Model the number below and tell if it is even or odd.

18=____+____

9+9

Even

300

Model the number below and tell if it is even or odd.

10=____+____

5+5

Even

400

Model the number below and tell if it is even or odd.

13=____+____

odd

500

Model the number below and tell if it is even or odd.

19=____+____

10+9

Odd

Equal Groups

100

Teacher Draw the model for this on the board

__ groups of ____

____+____=____

2 groups of 4 

4+4=8

200

Teacher Draw the model for this on the board

__ groups of ____

____+____=____

3 groups of 5

5+5+5=15

300

Teacher Draw the model for this on the board

__ groups of ____

____+____=____

5 groups of 4

4+4+4+4+4=20

400

Teacher draw the model on the board. 

Circle groups of 3. Write a repeated addition equation.

4 groups of 3

3+3+3+3=12

500

Teacher draw the model on the board. 

Circle groups of 6. Write a repeated addition equation.

3 groups of 6 

6+6+6=18

Using Arrays

100

Teacher: Draw model on the board. 

3 rows of ___

___+____+___=___

3 rows of 2

2+2+2=6

200

Teacher: Draw model on the board. 

2 rows of ___

__+__=___

2 rows of 4

4+4=8

300

Teacher: Draw the model on the board 

___ rows of ___

addition equation

5 groups of 3

3+3+3+3+3=15

400

Teacher: Draw the model on the board 

___ rows of ___

addition equation

4 rows of 5

5+5+5+5=20

500

Teacher: draw model on the board 

Which array is greater? 

left 

Making Arrays

100

Create an array and addition equation for: 

4 rows of 3

3+3+3+3=12

200

Create an array and addition equation for: 

6 rows of 4

4+4+4+4+4+4=24

300

Create an array and addition equation for: 

A cupboard has 4 shelves. There are 3 glasses on each shelf. How many glasses are there in all?

4 groups of 3 

3+3+3+3= 12

400

Create an array and addition equation for: 

A bingo card has 5 rows. There are 5 squares in each row. How many squares are there in all? 

5 rows of 5

5+5+5+5+5=25

500

Create an array and addition equation for: 

A pet store has 5 equal rows of fish tanks. There are 20 fish tanks in all. How many fish thank are in each row? 

5 rows of 4

4+4+4+4+4=20

20 fish tanks in each row