1 - Getting Started ~4 mins
You already know bonds: two parts that make a whole, like 6 and 4 making 10.
Ten children were on the bus. At the school stop some hopped off, and now only 4 are left. How many hopped off? How do you know?
2 - Watch and Notice ~10 mins
A bond is two parts that make a whole. 6 and 4 make 10.
With 6 covered, 4 is left: 10 − 6 = 4.
With 4 covered, 6 is left: 10 − 4 = 6.
Same bond, two take-aways. Look at each bond the same way.
3 - Try It Together ~11 mins
One pupil at the board finds the hiding part. Everyone else watches and agrees when asked.
The whole is set. One part is showing. Find the part that is hiding.
Find the hiding part
4 - Write the Twin Take-aways ~2 mins
In your maths copy, write these two take-aways from the same bond, one under the other:
- 10 − 6 = 4
- 10 − 4 = 6
5 - Class Challenge ~8 mins
We work these take-aways together at the board: 10 − 7, then 10 − 3, then 9 − 5, then 8 − 6.
First name the bond. Then find the hiding part. The class agrees before we move on.
Which part is hiding?
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.