Draw one clean circle at the front on the visualiser or a large sheet. Take two or three hands-up answers only — you are fishing for the point stayed still and the pencil moved around. Don't confirm yet; the model step proves it.

Name each step as it animates: set, plant, rotate. On the small radius 2.5 cm circle, hold out for the join — the point must not move or the ends miss. Then, on a real sheet at the front, deliberately lift the point halfway through one turn so the class sees the curve break — that is the slip they must avoid.

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

Call each radius clearly (3 cm, then 5 cm, then 2 cm). The screen models the routine; pupils set their real compass gap against their own ruler. As pupils draw at their seats, circulate and check the compass gap is set against the ruler before the point goes down. The commonest slip is measuring the gap by eye instead of against the ruler. Compare a paper circle to the screen circle after each one.

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.

Pupils draw each target on paper while individual pupils set the target on screen and press Check. Fast finishers who are waiting watch the board and predict the next radius. The Olympic rings come next as a paper task.