New
New
Year 3

# Construct a whole when given a part and the number of parts

I can construct a whole when given a part and the number of parts.

New
New
Year 3

# Construct a whole when given a part and the number of parts

I can construct a whole when given a part and the number of parts.

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## Lesson details

### Key learning points

1. If you know one part and how many parts there are we can construct the whole.
2. If you know that the part is one out of 4 equal parts we can draw the whole.
3. The whole can be one shape or a group of objects.

### Common misconception

Children might think that any shape they draw around or use is a whole and the new shapes they create represent lots of wholes joined together.

Ensure the children understand that a whole can be anything and can change as you add parts to it. A piggy bank is a good analogy for this as you are constantly adding money to the whole and it is made up of many parts.

### Keywords

• Whole - The whole is all the parts or everything, the total amount.

• Part - A part is some of the whole.

• Construct - Constructing something involves making something by joining parts together.

Make use of 2D shapes as stencils here. The shape in question 1 of Task A can easily be replaced with something more available to all the children.
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).

## Starter quiz

### 6 Questions

Q1.
What is the missing label in this bar model?
Q2.
Look at the sequence of months. Which season is missing?
Spring
Summer
Winter
Q3.
What is the name of this shape?
Q4.
What is the name of this shape?
Pentagon
Square
Oblong
Q5.
Complete the sentence. 90 is made of groups of 10
Q6.
How many 10s are there in 50?

## Exit quiz

### 6 Questions

Q1.
Thinking about the parts, which of these wholes is the odd one out?
Correct Answer: An image in a quiz
Q2.
Thinking about the parts, which of these wholes is the odd one out?
Correct Answer: An image in a quiz
Q3.
Strip A is made up of 3 equal parts. Strip B is made up of 4 equal parts. Which strip is the longest?
Strip A
Q4.
How many equal parts does each numeral have?