Review explaining the size of the part in relation to the whole | Maths

Starter quiz

Look at this group of leaves - some are the same colour and shape. Based on this, how many parts make up the whole group? There are ______ parts.
- '2' ✓
Look at the image then complete the sentence. The parts are __________. I know this because the number of chicks in each group is not the same.
- equal
- unequal ✓
Look at the image then complete the sentence. The number of mice in each group is __________. This means that the parts are equal.
- the same ✓
- different
Look at the image and complete the sentence. If the distance from Jun’s house to the school is the whole, then the distance from Jun’s house to the church is a ______ of the whole.
- 'part' ✓
Look at the shape and complete the sentence: The whole has been divided into four ______ parts.
- 'equal' ✓
Look at the whole shapes. Which shapes are made from four equal-sized parts?
- A ✓
- B
- C
- D ✓

Exit quiz

Look at this image then complete the sentence: The __________ balloons make up the greater part of the whole.
- red
- green
- yellow ✓
- blue
Look at the sets of counters. In which set are the red counters the greater part of the whole?
- A ✓
- B
- C
- D
Look at the sets of counters. In which set are the red counters the smallest part of the whole?
- A
- B ✓
- C
- D
These jugs all contain 250 ml of water. Starting with the jug of water that represents the greatest part of the whole, put these jugs of water in order.
- 1
  
  ⇔
  
  C
- 2
  
  ⇔
  
  A
- 3
  
  ⇔
  
  B
Look at this pattern made with rods. In which pattern is the blue rod the smallest part of the whole?
- A
- B
- C
- D ✓
Look at these sets of marbles. Out of all the sets, in which one is the blue marble the greatest part of the whole?
- Set A
- Set B
- Set C
- Set D ✓

Worksheet

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Presentation

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Lesson Details

Key learning points

If the whole is the same, then two parts can be compared directly.
If the whole increases whilst the part stays the same, then the part becomes a smaller part of the whole.
If the whole decreases whilst the part stays the same, then the part becomes a bigger part of the whole.
Part and whole need consideration when judging whether a relatively large or small part of the whole is identified.

Common misconception

Children may struggle to understand that parts change size when the whole changes. A relative size of a part that stays the same whilst the whole changes is a tricky concept.

What do you notice? What is the same? What is different?

Keywords

Whole - The whole is all the parts or everything, the total amount.
Part - A part is some, but not all, of the whole.