New
New
Year 1

# Identify the quantity shown in a representation of numbers 11 to 19

I can identify the quantity shown in a representation of numbers 11 to 19

New
New
Year 1

# Identify the quantity shown in a representation of numbers 11 to 19

I can identify the quantity shown in a representation of numbers 11 to 19

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## Lesson details

### Key learning points

1. The numbers 11-19 can be formed by combining a ten and ones.
2. The numbers 11-19 can be partitioned into a ten and ones.
3. Tens frames can be used to represent the numbers 11 to 19

### Common misconception

Pupils use one to one correspondence to count all rather than counting on from a group of 10 to identify a teen number.

Provide concrete and pictorial examples where it is more difficult to count the ones in a group of 10 e.g. a bundle of straws or box of pencils. Encourage pupils to use the phrase 'one ten and ...' to focus attention on counting on from 10

### Keywords

• Partition - Splitting an object or value into smaller parts.

• Tens - A ten is a group of 10 ones.

• Ones - Individual objects, grouped in ones.

### 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.
What number comes next in the count? 10, 11, 12, 13,
Q2.
What number is made of 5 and 4?
Q3.
Look at the image. 8 is made of 5 and .
Q4.
Which place value chart represents these counters?
Correct Answer: An image in a quiz
Q5.
Which number completes the sentence? is made of 1 ten and 7 ones.
1
7
Q6.
Which number is being described? It is a two-digit number with 1 ten and 1 one.

## Exit quiz

### 6 Questions

Q1.
How do we partition a number?
Find one more than the number.
Correct answer: Split the number into parts.
Q2.
What number is being shown on the ten frames?
Q3.
Which ten frame shows the same number as the part part whole model?
A
C
Q4.
What number is being shown on the Gattegno chart?
Q5.
To show 13 on the Gattegno chart, how many ones would there be?
2 ones
5 ones
Q6.
Some teen numbers have been partitioned. Match the teen number to the number of tens and ones.
Correct Answer:13 is one ten and,3 ones

3 ones

Correct Answer:15 is one ten and,5 ones

5 ones

Correct Answer:18 is one ten and,8 ones

8 ones