Confidence usually goes before ability
A pupil who has decided they cannot do maths will stop trying the hard questions, which removes exactly the practice that would help.
That means the gap grows for reasons that have nothing to do with ability. Addressing the belief is often the fastest route back to the skill.
Find the floor and build from there
Rebuilding starts below the current difficulty, not at it. Finding the last place where everything made sense gives a child something solid to stand on.
Going back is not a step backwards. It is the only way to get a run at the material that follows.
Make early wins small and certain
The first few sessions should be winnable. A child who gets things right three times in a row starts to behave differently in the fourth.
Difficulty can rise quickly once that shift happens, but it has to happen first.
Separate the mistake from the person
Treating errors as information rather than as evidence changes what a mistake costs. That is a habit adults can model directly.
Saying that is a useful mistake, now we know what to practise is a small change that takes the sting out of being wrong.
Give it time
A belief built over a year does not dissolve in a fortnight. Expect progress to show up first in willingness to try, and only later in marks.
That willingness is the leading indicator. When a child starts attempting the questions they used to skip, the rest usually follows.
Address the belief as well as the gap, start below the current difficulty, make early wins certain, and watch for willingness before marks.

