Identify the number of equal or unequal parts in a whole | Maths

Starter quiz

What is the missing label in this bar model?
- 'part' ✓
What is the missing whole in this bar model?
- '300' ✓
If I have two 50 pence pieces, how much money do I have altogether? ______ pence.
- '100' ✓
Look at the sequence of the months of the year. Which month is missing?
- 'April' ✓
What is the missing part in this bar model?
- '50' ✓
Tick the images that correctly show a shape that has been divided into two equal parts.
- Shape 1
- Shape 2 ✓
- Shape 3 ✓
- Shape 4

Exit quiz

Which of these statements is correct?
- A whole is made of many parts. ✓
- A part is made of many wholes.
Which flag is being described? It is made of blue, white and red parts.
- Flag of Costa Rica ✓
- Flag of Jamaica
Which flag is being described? It is made of unequal parts.
- Flag of Columbia ✓
- Flag of France
This square has been split into four parts.
- It is made up of 4 equal parts.
- It is made up of 4 unequal parts. ✓
Match the shapes to their descriptions.
- Shape A
  
  ⇔
  
  It is made up of 4 equal parts. ✓
- Shape B
  
  ⇔
  
  It is made up of 4 unequal parts. ✓
Which strip of paper is being described? It has been folded into 4 unequal parts.
- Strip 1
- Strip 2 ✓
- Strip 3 ✓

Worksheet

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Presentation

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Lesson Details

Key learning points

Parts can be equal or unequal in size.
There are __ equal parts in the whole.
There are __ unequal parts in the whole.

Common misconception

Sometimes parts can be deceptive and look equal but are in fact unequal. For example, the rhombus that has been split into parts with lines that are equally distributed.

Explore this further by presenting several examples like this if needed. You could ask the children to try and think of some examples where the parts look equal but are in fact unequal. Getting the children thinking of this will boost understanding.

Keywords

Whole - The whole is all the parts or everything, the total amount.
Part - A part is some of the whole.
Equal - We say that two or more things are equal if they have the same quantity or value.
Unequal - We say that two or more things are unequal if they do not have the same quantity or value.