1 - Getting Started ~3 mins
Look at this little house on the board. Inside it live three numbers: 5, 2 and 7.
These three numbers will make adds and take-aways together. What number sentences do you think they make?
2 - Watch and Notice ~8 mins
A fact family is two parts and one whole that make four number sentences: two adds and two take-aways.
Watch each family on the board. The parts can swap, so we get two adds. Each part can come off the whole, so we get two take-aways. Same three numbers, four sentences.
The biggest number is the whole. When we take away, we write the whole first.
3 - Try It Together ~9 mins
These number sentences need to go home. Help them find the right house: the 4, 2, 6 house or the 5, 3, 8 house.
Before each sentence lands, say the family out loud.
Send each sentence home
4 - Write the Four Facts in Your Copy ~5 mins
In your maths copy, write the four facts for the 5, 2 and 7 family.
Write two adds and two take-aways. Remember: the biggest number goes first when we take away. You know this family now.
5 - Class Challenge ~10 mins
Two houses now. For each one, put every sentence that belongs inside, and spot the odd ones out.
Before you check, name the whole: the biggest number, written first when we take away.
Complete each fact family
Unlock the full learning experience
You're previewing this lesson. Get full access to this lesson and hundreds more — each one ready to teach, with interactive activities, printable resources and pupil progress tracking built in.
This lesson is copyright of Coding Ireland 2017 - 2025. Unauthorised use, copying or distribution is not allowed.