Unit fractions
Recognise, find, and write fractions of a discrete set of objects: unit fractions and non-unit fractions with small denominators
What a learner can do afterwards
- Find 1/4 of 12 objects by dividing into 4 equal groups
- Find 3/4 of 12 objects
- Write the fraction of a set that is shaded or selected
The lesson
You already know how to share things into equal groups. Now you will use that skill on a group of real objects, like stars or apples. First, split the group into equal parts. The bottom number of the fraction tells you how many equal groups to make. The top number tells you how many of those groups to take.
Mia has 12 apples. She wants to find 3/4 of them. She splits the apples into 4 equal groups of 3. Then she takes 3 of the 4 groups: 3 + 3 + 3 = 9. So 3/4 of 12 apples is 9 apples.
Always check the groups are the same size before you count them. If the groups are not equal, the fraction will be wrong.
To find a fraction of a group, split it into equal groups first, then count how many groups you need.
Watch it
Where it sits
Where this leads
Jobs that lean on this skill. Follow one to see everything it is built on.
8 questions wait behind this lesson, each with its answer explained. Every answer feeds the sky: stars light as they are learned, and dim when it is time to come back.