When the method looks unfamiliar
It is tempting to show the way you were taught. Sometimes that helps, and sometimes it adds a second method to something not yet secure.
Ask your child to show you how they were taught first. If they can explain it, the understanding is there. If they cannot, that is useful information to pass on to the teacher or tutor.
Ask questions instead of giving answers
Four questions cover most situations. What is the question asking? What do you already know? What did you try? Where did it stop making sense?
That last one is the most valuable. A child who can say where it stopped making sense has already done most of the diagnostic work.
Set a stopping point before you start
Open-ended homework sessions drift, and drifting is where the friction starts. Agree the finish line first, whether that is a time or a number of questions.
If it is not working, stop. Twenty minutes of stuck is not better than ten minutes of progress tomorrow, and the cost of a bad evening carries over.
Notice effort out loud
Saying you are clever tends to make children avoid hard things in case it stops being true. Saying you kept going when that got difficult builds the opposite instinct.
Name the specific thing they did: checked the answer, tried a diagram, spotted their own mistake. Those are the habits worth growing.
Keep maths in ordinary life
Cooking, shopping, journeys and scores all carry real arithmetic. Using it casually keeps number sense alive without turning into a lesson.
It also quietly makes the point that maths is a normal thing adults use, rather than something that only exists in a workbook.
Ask how they were taught, question rather than answer, agree a stopping point in advance, and praise the method rather than the mark.
