Recognise and name the fraction ‘one-third’ | Maths

Starter quiz

Match the start and end end of the sentences correctly.

One-quarter of the whole

⇔

is one of four equal parts in the whole. ✓

One-half of the whole

⇔

is one of two equal parts in the whole. ✓
True or False? One-quarter of the birds are in each nest. The whole group of birds has been divided into 4 equal parts.

True ✓
False
Which image shows that the cheese has been divided into quarters?
Which image shows that the triangle has been divided into quarters?

A

B ✓

C
Which shape has not been divided into quarters?

A

B ✓

C
Which shape has been sorted into the wrong group?

A

B

C

D ✓

E

Exit quiz

When the whole has been divided into 3 equal parts, each part is __________.

one-half

one-third ✓

one-quarter
Which of the images have not been split into thirds?

A

B

C

D ✓
True or false. This shape has been split into thirds.

True
False ✓
Which shapes have been divided into thirds?

A ✓

B ✓

C
__________of the cakes have cherries.

one-half

one-quarter

one-third ✓
This part is one-third. What could the whole look like?

A ✓

B

C

Worksheet

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Lesson Details

Key learning points

When the whole has been divided into three equal parts, each part is one-third of the whole.
You can find thirds of objects, shapes and sets of objects.

Common misconception

Children can find it difficult to see if the three parts are equal, particularly when they are presented in different orientations rather than horizontal and vertical lines.

Allow children to handle practical objects and cut-outs of shapes that have been divided into thirds so they can rotate them and see them in different orientations.

Keywords

Third or one-third - One of three equal parts of a whole. To divide into three equal parts.