Give ten seconds of quiet think-time before any hands go up. Take three hands-up answers, not open call-outs. If a pupil offers 3 + 5 = 8, hold out for a second and a third: anyone got a take-away one? Don't confirm or complete the family yet — that is what Watch and Notice does.

• First bond (8): point at each part, then the whole. Ask which two sentences add up to the whole? — draw out 3 + 5 and 5 + 3.
• Cover the whole, then a part, so the class sees the add and the take-away come from the very same picture. The take-away undoing the add is the idea to hold on to.
• Second and third bonds (10, 9): let a pupil read all four facts off before you confirm. The point is that they can, not that you can.

Talk this one through together — pupils take turns at the board and the class agrees or corrects out loud.

The whole starts hidden. The pupil builds the two parts with the steppers until the whole circle lights up. Then, before moving on, hold out for all four sentences: the two adds and the two take-aways. Revoice a strong one: so once you know 4 and 3 make 7, you already know 7 take 4 leaves 3. Watch for pupils who write the take-away with the parts in the wrong order — steer them back to the picture (whole first).

This is the practice round — pupils take turns at the board, check each answer, and the class confirms before moving on. Keep the board work brisk rather than over-explaining. Reveal the bonds one at a time so the class only sees the current one.

For each of the first three, ask is the box a part or the whole? — it is a part, so a take-away finds it. The final bond gives the parts 8 and 3 with the whole hidden, so the answer is the whole, 11: we add the two parts. Flag it as that bond appears — this time the box is the whole, not a part — and pause on the flip. A pupil who is unsure of a missing part can put a possible answer back into the bond and check both parts reach the whole.