Why does my child's teacher want a different maths method?

You sit down to help with homework. You show your child the way you learned in Nigeria, quick and correct. The next week a note comes home: please use the method we teach in class. It can feel like the school is telling you your maths is wrong. It is not. Here is what your child is being taught, why the school cares about the method and not only the answer, and how you can help without pulling your child in two directions.

The methods your child will meet in an English primary school

The national curriculum in England sets out when each method is taught. The early years are about pictures and patterns. The written methods most of us know come later than many Nigerian parents expect.

Common methods in England and when they appear
MethodWhat it looks likeWhen it is taught
Number bondsPairs that make a number, such as 7 and 3 make 10From Year 1. Children should know number bonds to 20 by the end of Year 2.
Part whole modelA whole split into its parts. 6 is the whole, 4 is a part, 2 is a part.From Year 1
Bar modelBars drawn to show a word problem, such as finding the difference between two amountsFrom Year 1
PartitioningSplitting 46 into 40 and 6, or into 30 and 16From Year 2
Column addition and subtractionNumbers lined up in columns by place valueYear 3, for numbers with up to three digits
Short multiplicationA two or three digit number times a one digit number, in a set layoutStarts in Year 3, expected in Year 4
Long multiplicationUp to a four digit number times a two digit numberYear 5 for two digit numbers, Year 6 in full
Short divisionDividing by a one digit number, often called the bus stop methodExpected in Year 5
Long divisionUp to a four digit number divided by a two digit numberYear 6

Notice two things. First, column addition is not formally required until Year 3, and long division waits until Year 6, the last year of primary school. Second, the government's own guidance says the exact layout of working will vary by method and format. That is why your child's teacher may care where the carried digit goes, even when your answer is right.

Why the school wants its method, not yours

Many of us were taught maths as steps to learn, practise and repeat until they are fast. Speed still matters in England. Children are expected to be fluent. But the curriculum has two other aims alongside fluency: to reason mathematically and to solve problems. A child who gets the answer but cannot say why has only done one third of the job.

  • Understanding first. Number bonds, part whole models and partitioning show a child how numbers break apart and fit together. That understanding is what makes the column methods make sense later.
  • Showing working. Teachers want to see the reasoning, not only the final number. A method the teacher knows lets them see exactly where a mistake happened.
  • Consistency. The Department for Education's maths guidance uses a core set of pictures and models on purpose, so that what a child learns in Year 2 connects to what they learn in Year 4. If home uses a different picture, the connection breaks.
  • Building blocks. The early methods are stepping stones. A child who skips straight to a quick trick at 7 may struggle at 10, when the numbers get bigger and the problems are worded.

None of this means your method is wrong. Your column method and the school's column method are often the same idea. The difference is usually the order in which it is taught, the words used and the layout on the page.

If your child is in a US school

Parents in America hit the same wall, often with the Common Core standards. These ask children to work with strategies based on place value first, and to explain their calculations using equations, rectangular arrays and area models. An area model is a box split into parts, one for the tens and one for the ones.

When the Common Core expects the standard method, the one most Nigerian parents learned
OperationStandard method expected fluently by
Adding and subtracting multi digit numbersGrade 4
Multiplying multi digit numbersGrade 5
Dividing multi digit numbersGrade 6

So the method you know is not banned. It is simply expected later, after the strategies. States and districts vary, so ask your child's teacher which standards and methods the class uses.

How to help without confusing your child

  1. Ask the school whether it has a calculation policy or worked examples you can follow at home. The most useful examples show every step, and then give a very similar problem to try.
  2. Ask your child to teach you. Say, "Show me how your teacher does it." Explaining a method out loud is exactly the reasoning the school wants, and it tells you how well your child really understands it.
  3. Learn the class words. You may say carry and borrow. Your child's class may use different words. Use theirs at homework time.
  4. Keep your method for checking. Once the homework is done the school's way, your quick method is a good way to check the answer. Present it as a second method, not the right one.
  5. Do not switch methods in the middle of a problem. If your child is halfway through the school's layout, let them finish it that way, even if it feels slow.
  6. Practise the facts, your way. Times tables and number bonds are the same everywhere. Quick recall of these is where the Nigerian habit of regular practice really pays off.
  7. Watch your own words about maths. If you say, "I was never good at this," your child hears it.

A useful question for parents' eveningAsk the teacher, "Which method should my child use for this year, and when will they move on to the next one?" The answer tells you what to reinforce at home and what to leave alone for now.

When a tutor helps

If homework time has become a tug of war between two methods, a teacher who knows both can help. At Masani, our carefully vetted Nigerian teachers, the top 3% of those who apply, teach the UK, US and Canadian curricula one to one online. They use your child's school methods, and you get a written report after every lesson so you know exactly what was covered. You can book a free 15 minute call to talk it through.

Quick answers

Is it wrong to teach my child the method I learned in Nigeria?

No, but use it for checking, not instead of the school's method. Teachers want to see the working, and a method they do not recognise makes mistakes harder to spot.

When do children in England learn long division?

Long division is in the Year 6 national curriculum, for numbers up to four digits divided by a two digit number. Short division is expected in Year 5.

What is a bar model in maths?

A bar model uses rectangles to show the amounts in a word problem, so a child can see what is known and what needs to be found. It is used from the early primary years.

About the author

Unyime Okorosobo, Co-founder and academic lead, Masani. Unyime holds a Master's in International Education from the University of Manchester. A third generation educator with more than 15 years in teaching and education leadership, she was named one of Nigeria's 50 Most Inspirational Teachers in 2023.

Sources

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