Find one-third or one-quarter of a number
I can find one-third or one-quarter of a number.
Find one-third or one-quarter of a number
I can find one-third or one-quarter of a number.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- To find a third of a number, you divide the whole into 3 equal parts.
- To find a quarter of a number, you divide the whole into 4 equal parts.
- It is helpful to use a bar model to help you find one-third or one-quarter of a number.
Keywords
Third - 1 of 3 equal parts of a whole.
Quarter - 1 of 4 equal parts of a whole.
Common misconception
Children may confuse finding a quarter of a number with finding 4 of the objects, or finding a third of a number with finding 3 of the objects.
Use the stem sentence 'the whole has been divided into ___ equal parts' and draw a bar model to represent this before children attempt to find a quarter or a third of a number.
To help you plan your year 2 maths lesson on: Find one-third or one-quarter of a number, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 2 maths lesson on: Find one-third or one-quarter of a number, 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 secondary maths curriculum, or learn more about lesson planning.
Licence
Lesson video
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Starter quiz
6 Questions
four equal parts, -
each part is one-quarter.
two equal parts, -
each part is one-half.
three equal parts, -
each part is one-third.
$$ \frac{1}{2} $$ of 18 = -
9
$$ \frac{1}{2} $$ of 12 = -
6
$$ \frac{1}{2} $$ of 16 = -
8
$$ \frac{1}{2} $$ of 14 = -
7
$$ \frac{1}{2} $$ of 20 = -
10
$$ \frac{1}{2} $$ of 10 = 5 -
5 = $$ \frac{1}{2} $$ of 10
$$ \frac{1}{2} $$ of 20 = 10 -
10 = $$ \frac{1}{2} $$ of 20
$$ \frac{1}{2} $$ of 14 = 7 -
7 = $$ \frac{1}{2} $$ of 14
$$ \frac{1}{2} $$ of 18 = 9 -
9 = $$ \frac{1}{2} $$ of 18
Exit quiz
6 Questions
To find one-third of a number, -
you divide the whole into 3 equal parts.
To find one-quarter of a number, -
you divide the whole into 4 equal parts.
