Starter quiz
- Look at the bar model. What is the whole?
- '9' ✓
- Look at the bar model. What is the missing part?
- '1' ✓
- Which bar model represents the counters?
- Which set of counters will come next if we are ordering the partitions of 9 systematically?
- Lucas is going to clap 7 times. He has already clapped 2 times. How many more claps does he need to do?
- '5' ✓
- Match the whole to the correct two parts.
- The whole is 5⇔One part is 2 and the other part is 3 ✓
- The whole is 7⇔One part is 2 and the other part is 5 ✓
- The whole is 8⇔One part is 3 and the other part is 5 ✓
Exit quiz
- What number has been partitioned and shown in the bar model?
- '10' ✓
- What is the missing part in the part-part-whole model?
- '6' ✓
- Izzy is going to jump 10 times across the playground. She has jumped 8 times. How many more jumps does she need to do?
- '2' ✓
- Which part-part-whole model will come next if we are being systematic?
- Look at the part-part-whole model. What is the missing part?
- '1' ✓
- What could the missing whole and part be? Which of these are correct?
- The whole is 6 and the missing part is 1
- The whole is 7 and the missing part is 1 ✓
- The whole is 9 and the missing part is 3 ✓
- The whole is 10 and the missing part is 3
-
Worksheet
Loading worksheet ...
Presentation
Loading presentation ...
Lesson Details
Key learning points
- Each of the numbers six to ten can be partitioned into two parts in different ways.
- A part-part-whole model or a bar model can be used to represent the whole and the parts.
- If we know one part we can find the other part.
- Knowing about odd and even parts means you know if the missing part is odd or even.
Common misconception
Pupils are not yet fluent in number pairs and partitions of numbers 6 to 10 and so rely on counting to find missing parts.
Develop subitising skills so that pupils are able to recognise small partitions instantly. Encourage choral repetition of stem sentences emphasising wholes and parts.
Keywords
Partition - To split a whole up into parts.
Whole - All of something. Complete.
Part - A piece or section of a whole.
+