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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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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

Download all resources
Share activities with pupils

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.

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 (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

Video

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Starter quiz

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6 Questions

Q1.
What number comes next in the count? 10, 11, 12, 13,
Correct Answer: 14
Q2.
What number is made of 5 and 4?
An image in a quiz
Correct Answer: 9
Q3.
Look at the image. 8 is made of 5 and .
An image in a quiz
Correct Answer: 3
Q4.
Which place value chart represents these counters?
An image in a quiz
Correct Answer: An image in a quiz
An image in a quiz
An image in a quiz
An image in a quiz
Q5.
Which number completes the sentence? is made of 1 ten and 7 ones.
1
7
Correct answer: 17
Q6.
Which number is being described? It is a two-digit number with 1 ten and 1 one.
Correct Answer: 11

Exit quiz

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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?
An image in a quiz
Correct Answer: 18
Q3.
Which ten frame shows the same number as the part part whole model?
An image in a quiz
A
Correct answer: B
C
Q4.
What number is being shown on the Gattegno chart?
An image in a quiz
Correct Answer: 16, sixteen
Q5.
To show 13 on the Gattegno chart, how many ones would there be?
An image in a quiz
2 ones
Correct answer: 3 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