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Lesson 3 of 10
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
Lesson 3 of 10
New
New
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
Lesson details
Key learning points
- The numbers 11-19 can be formed by combining a ten and ones.
- The numbers 11-19 can be partitioned into a ten and ones.
- Tens frames can be used to represent the numbers 11 to 19
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.
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
Pupils should spend time with practical, concrete examples in this lesson making a group of 10 and attaching this to how one ten is written in a teen number. Place value understanding is key to later concepts and so it is worth taking time to deepen pupils' experiences.
Teacher tip
Licence
This content is © Oak National Academy Limited (2025), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Lesson video
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Prior knowledge starter quiz
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6 Questions
Q1.What number comes next in the count? 10, 11, 12, 13,
What number comes next in the count? 10, 11, 12, 13,
Q2.What number is made of 5 and 4?
What number is made of 5 and 4?
Q3.Look at the image. 8 is made of 5 and .
Look at the image. 8 is made of 5 and .
Q4.Which place value chart represents these counters?
Which place value chart represents these counters?
Q5.Which number completes the sentence? is made of 1 ten and 7 ones.
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.
Which number is being described? It is a two-digit number with 1 ten and 1 one.
Assessment exit quiz
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6 Questions
Q1.How do we partition a number?
How do we partition a number?
Find one more than the number.
Q2.What number is being shown on the ten frames?
What number is being shown on the ten frames?
Q3.Which ten frame shows the same number as the part part whole model?
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?
What number is being shown on the Gattegno chart?
Q5.To show 13 on the Gattegno chart, how many ones would there be?
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.
Some teen numbers have been partitioned. Match the teen number to the number of tens and ones.
3 ones
5 ones
8 ones