Myths about teaching can hold you back
- Year 2
Relate finding half of a number to halving and doubling
I can explain how finding half of a number relates to halving and doubling.
- Year 2
Relate finding half of a number to halving and doubling
I can explain how finding half of a number relates to halving and doubling.
These resources were made for remote use during the pandemic, not classroom teaching.
Switch to our new teaching resources now - designed by teachers and leading subject experts, and tested in classrooms.
Lesson details
Key learning points
- To find half of a number you split it into 2 equal parts
- Use knowledge of doubles and halves to find half of a number
- If you double the half you will end up with the whole number
Keywords
Double - To become twice as many.
Half - To divide into 2 equal parts.
Common misconception
Children may find it difficult to find the whole when they are told the size of the half and may try to find half of the half.
Use a bar model representation to help children see the structure of double and half. Use gesture, colour and/or circling when discussing what each part of the bar model represents.
To help you plan your year 2 maths lesson on: Relate finding half of a number to halving and doubling, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 2 maths lesson on: Relate finding half of a number to halving and doubling, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
Explore more key stage 1 maths lessons from the Fractions: identify equal parts and be familiar with halves, thirds and quarters unit, dive into the full primary maths curriculum, or learn more about lesson planning.
Licence
Prior knowledge starter quiz
6 Questions
Q1.Match the equation to the correct statement.
2 + 2 = 4 -
Double 2 is 4
8 = 4 + 4 -
Double 4 is 8
3 + 3 = 6 -
Double 3 is 6
10 = 5 + 5 -
Double 5 is 10
Q2.When the whole has been divided into 2 equal parts, each part is ___
Q3.How can each fraction be described?
$$ \frac{1}{2} $$ -
is one of two equal parts.
$$ \frac{1}{3} $$ -
is one of three equal parts.
$$ \frac{1}{4} $$ -
is one of four equal parts.
Q4.Match the fraction circled in each picture to the correct representation.

A -
$$ \frac{1}{4} $$
B -
$$ \frac{1}{2} $$
C -
$$ \frac{1}{3} $$
Q5.Which picture shows $$ \frac{1}{2} $$ of the whole amount is circled?

Q6.Match the equation to the correct answer.
$$ \frac{1}{2} $$ of 6 = -
3
$$ \frac{1}{2} $$ of 12 = -
6
$$ \frac{1}{2} $$ of 16 = -
8
$$ \frac{1}{2} $$ of 14 = -
7
$$ \frac{1}{2} $$ of 8 = -
4
Assessment exit quiz
6 Questions
Q1.Match the double fact to its answer.
Double 10 is -
20
Double 6 is -
12
Double 7 is -
14
Double 8 is -
16
Double 9 is -
18
Q2.Each missing part on this bar model represents one-half of the whole number of pencils. What numbers are missing?

Q3.Which equations are true for this bar model?

Q4.What facts does this bar model show?

Q5.Match the statements that link doubling and halving facts.
Double 3 is 6 -
Half of 6 is 3
Double 6 is 12 -
Half of 12 is 6
Double 5 is 10 -
Half of 10 is 5
Double 10 is 20 -
Half of 20 is 10