Starter quiz
- What number comes next in the count? 10, 11, 12, 13, ______
- '14' ✓
What number is made of 5 and 4?- '9' ✓
Look at the image. 8 is made of 5 and ______.- '3' ✓
Which place value chart represents these counters?- Which number completes the sentence? ______ is made of 1 ten and 7 ones.
- 1
- 7
- 17 ✓
-
- Which number is being described? It is a two-digit number with 1 ten and 1 one.
- '11' ✓
Exit quiz
- How do we partition a number?
- Find one more than the number.
- Split the number into parts. ✓
-
What number is being shown on the ten frames?- '18' ✓
Which ten frame shows the same number as the part part whole model?
A
B ✓
C
What number is being shown on the Gattegno chart?- '16' ✓
To show 13 on the Gattegno chart, how many ones would there be?- 2 ones
- 3 ones ✓
- 5 ones
-
- Some teen numbers have been partitioned. Match the teen number to the number of tens and ones.
- 13 is one ten and⇔3 ones ✓
- 15 is one ten and⇔5 ones ✓
- 18 is one ten and⇔8 ones ✓
Worksheet
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Presentation
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Video
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
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.
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