CCSS
Determine
whether
a group to
of objects
NS 1.1G2.OA.3
Count, read,
and write
numbers
10,000.(up to 20) has an odd or
even number of members, e.g., by pairing objects or counting them by 2s; write an
equation to express an even number as a sum of two equal addends.
UNDERLYING SKILLS AND CONCEPTS:
counting;
represent numbers
Identify Odd and Even Numbers
Hey!
I have
an even
number
of hands!
Numbers can be even or odd.
K
a
ey Ide
Even numbers count things that can be
put into two equal groups or into pairs
without leftovers.
Odd numbers count things that cannot
be put into pairs because there are leftovers.
Even numbers have a 2, 4, 6, 8, or 0 in the ones place.
Odd numbers have a 1, 3, 5, 7, or 9 in the ones place.
E x am p l E
1
0
1
2
E x am p l E
3
4
5
6
7
8
9
10
2
Which number does not belong? Explain how you decided.
6, 10, 13, 18, 22
Check each number. Decide if it is even or odd.
6, 10, 18, and 22 are even numbers. 13 is an odd number.
13 does not belong because it is the only odd number.
page 14
Chapter 2 – Lesson 1
C – © CSL Associates, Inc. All rights reserved.
Ten-frame tiles can help you see why numbers are even or odd.
Name
P RAC T I C E
Find the number that does not belong. Explain.
1. 4, 6, 8, 10, 11
11; it is the only odd number.
2. 31, 41, 52, 61, 69
52; it is the only even number.
3. 8, 16, 32, 41, 64
41; it is the only odd number.
4. 9, 13, 17, 20, 23
20; it is the only even number.
5. 202, 203, 204, 206, 208
203; it is the only odd number.
How are the numbers alike?
What number does not belong? Tell why.
6. 99, 77, 55, 44, 33
Both digits are the same in each number.
44 does not belong; it is the only even number.
C – © CSL Associates, Inc. All rights reserved.
7. 101, 102, 104, 106, 108
All numbers have 1 in hundreds and 0 in tens.
101 does not belong; it is the only odd number.
Math
Reasoning
Number Sense
MR 2.2
8. Every player on a basketball team has a number.
Todd’s number is even.
24; it is greater than 20 and
It is greater than 20.
is an even number.
Which is Todd’s number?
Explain.
12
Chapter 2 – Lesson 1
23
24
37
41
page 15
MCX94.HW.CL.G3.FM&Lesson.v211
8/3/04
13:56
Page 10
Name
…at home!
P RAC T I C E
Find the number that does not belong. Explain.
9; it is the only odd number.
1. 2, 4, 6, 8, 9
2. 21, 32, 41, 51, 61
32; it is the only even number.
3. 6, 12, 18, 25, 30
25; it is the only odd number.
4. 7, 9, 11, 13, 16
16; it is the only even number.
5. 106, 107, 108, 110, 112
107; it is the only odd number.
How are the numbers alike?
What number does not belong? Tell why.
6. 88, 66, 44, 33, 22
Both digits are the same in each number.
33 does not belong; it is the only odd number.
All numbers have 2 in hundreds and 0 in tens.
203 does not belong; it is the only odd number.
Math
Reasoning
Number Sense
MR 2.2
8. Every player on a basketball team has a number.
Todd’s number is even.
26; it is greater than 20 and
It is greater than 20.
is an even number.
Which is Todd’s number?
Explain.
18
page 10
21
26
39
Home Resource and Homework
43
Chapter 2 Lesson 1
C – © CSL Associates, Inc. All rights reserved.
7. 202, 203, 204, 206, 208
MCX94TEG3Ch01_32.v8.9.3 2/21/01 14:44 Page 29
Name
P RAC T I C E
Find the number that does not belong. Explain.
1. 4, 6, 8, 10, 11
11; it is the only odd number.
2. 31, 41, 52, 61, 69
52; it is the only even number.
3. 8, 16, 32, 41, 64
41; it is the only odd number.
4. 9, 13, 17, 20, 23
20; it is the only even number.
5. 202, 203, 204, 206, 208
203; it is the only odd number.
How are the numbers alike?
What number does not belong? Tell why.
6. 99, 77, 55, 44, 33
Both digits are the same in each number.
44 does not belong; it is the only even number.
C – © CSL Associates, Inc. All rights reserved.
7. 101, 102, 104, 106, 108
All numbers have 1 in hundreds and 0 in tens.
101 does not belong; it is the only odd number.
Math
Reasoning
Number Sense
MR 2.2
8. Every player on a basketball team has a number.
Todd’s number is even.
24; it is greater than 20 and
It is greater than 20.
is an even number.
Which is Todd’s number?
Explain.
12
Chapter 2 – Lesson 1
23
24
Student Book Page
37
41
page 15
Name
…at home!
P RAC T I C E
Find the number that does not belong. Explain.
9; it is the only odd number.
1. 2, 4, 6, 8, 9
2. 21, 32, 41, 51, 61
32; it is the only even number.
3. 6, 12, 18, 25, 30
25; it is the only odd number.
4. 7, 9, 11, 13, 16
16; it is the only even number.
5. 106, 107, 108, 110, 112
107; it is the only odd number.
How are the numbers alike?
What number does not belong? Tell why.
6. 88, 66, 44, 33, 22
Both digits are the same in each number.
33 does not belong; it is the only odd number.
All numbers have 2 in hundreds and 0 in tens.
203 does not belong; it is the only odd number.
Math
Reasoning
Number Sense
MR 2.2
8. Every player on a basketball team has a number.
Todd’s number is even.
26; it is greater than 20 and
It is greater than 20.
is an even number.
Which is Todd’s number?
Explain.
18
page 10
21
26
39
Home Resource and Homework
43
Chapter 2 Lesson 1
C – © CSL Associates, Inc. All rights reserved.
7. 202, 203, 204, 206, 208