New
New
Year 1

# Explore odd and even numbers within 20

I can explore odd and even numbers within 20.

New
New
Year 1

# Explore odd and even numbers within 20

I can explore odd and even numbers within 20.

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## Lesson details

### Key learning points

1. Recall odd and even numbers to ten.
2. A number is even if the ones digit is even.
3. An even number can be made from groups of two.
4. A number is odd if the ones digit is odd.
5. An odd number cannot be made from groups of two.

### Common misconception

Children may think a number is an odd number if the tens digit is odd.

Reinforce the tens number being even by showing the groups of 2 We only need to look at the ones digit to see if a number is odd or even.

### Keywords

• Odd - Any number that cannot be made of pairs. The last digit is 1, 3, 5, 7 or 9

• Even - Any number that can be made of pairs. The last digit is 0, 2, 4, 6 or 8

• Pair - Two together. Often with something in common.

Give children experience of odd and even numbers in different contexts and using different representations. Look for patterns and similarities and differences.
Teacher tip

### Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

## Starter quiz

### 6 Questions

Q1.
Which set should number shape 2 be in?
Set B
Q2.
Which set does the number 4 belong to?
Set B
Q3.
Which number shape has been placed in the wrong set? Write the number.
Q4.
Lucas whispers the even numbers as he counts. Which numbers does he whisper?
1, 3, 5, 7, 9
Correct answer: 2, 4, 6, 8, 10
Q5.
What is the missing number at a?
Q6.
True or false? 5 has been partitioned into two odd parts.
True

## Exit quiz

### 6 Questions

Q1.
How many pairs is the number 8 made of?
2
6
8
Q2.
How many pairs is the number 14 made of?
Q3.
Complete the sentence. 13 is an odd number because the ones digit is an odd number.
Q4.
Write the digit that tells you whether the number 13 is odd or even.
Q5.
Match the number to say whether it is odd or even