How to Teach Your Child to Find Mistakes in English Sentences

Your child knows that “two cats” needs an s. They can tell you that sentences start with a capital letter. Yet when the worksheet says “There is one mistake in each sentence — find it and correct it”, they read the line, shrug, and say it looks fine.

That gap is normal. Knowing a rule and noticing when it is broken are two different skills, and the second one has to be taught on purpose. The good news is that it can be taught in a few minutes a day, with a routine simple enough for a six-year-old and still useful at P6.

Why “just read it carefully” doesn’t work

When children (and adults) read, the brain works for meaning. It fills in what it expects to see. “There is two cats in the classroom” is perfectly understandable, so the eye slides straight past is. Proofreading asks the opposite: ignore the meaning for a moment and look at the form of each word.

Telling a child to “read carefully” doesn’t explain how. They read the sentence again, at the same speed, for meaning — and miss the same mistake twice.

What helps is a short, fixed checking routine, so your child knows exactly what to do with each sentence instead of staring at it.

Try this week: next time your child says “there’s no mistake”, don’t point to it. Ask “which word did you check first?” — that tells you whether they have a method yet.

The four-step checking routine

Teach these four steps in order. Write them on a card and keep it next to the worksheet until they become automatic.

1. Read it once for meaning

Let your child read the sentence normally first. Does it make sense? Who is doing what, and when? This first read is not wasted: it tells them whether the sentence is about one person or many, and whether it happened yesterday or happens every day — the two facts most grammar mistakes depend on.

2. Slow down: point to every word

Now read it again with a finger (or a pencil) under each word, saying it aloud. Pointing forces the eye to stop on every word instead of sliding over familiar ones. For younger children this step alone finds most capital-letter and full-stop mistakes.

3. Check the edges

Look at the first word (capital letter?), the last word (full stop or question mark?), and any names, days and months (capital letters?). These are the easiest points to check and the most common mistakes from P1 onwards.

4. Ask the “match” questions

Then check that the words agree with each other:

Number: one or more than one? two cat → two cats; There is two cats → There are two cats.
Person: who is doing it? he go → he goes; they plays → they play.
Time: when did it happen? Yesterday I play → Yesterday I played.

Most planted mistakes in primary proofreading break one of these three matches. If your child gets used to asking “how many? who? when?”, they will find far more mistakes than by re-reading.

Try this week: practise only step 3 for a few days — first word, last word, names. It’s quick, it builds confidence, and it catches real mistakes.

Say it aloud — the ear catches what the eye misses

Children who speak English at home often hear a mistake before they can explain it: “She don’t like it… that sounds wrong.” Children learning English as a second language may not have that instinct yet, but saying the sentence aloud still slows them down and makes each word count.

If English isn’t your strongest language, you don’t need to judge whether the sentence sounds right. Your job is to ask your child to read it aloud, slowly, and to stop at each word. That alone changes how they read.

Fix it, then say why

Finding the mistake is half the job. Exam proofreading usually asks for the correction too, and writing the correct word is where children show they understand the rule.

Encourage a one-line reason after each fix:

“two cat → two cats, because there are two.”
“monday → Monday, because days start with a capital.”
“I goed → I went, because go is irregular.”

A child who can say why will find the same kind of mistake next time. A child who guessed will not. You don’t need grammar terms — “because there are two” is as good as “plural”.

If you want the grammar behind the most common mistakes explained for parents, GrammarEasy’s guides to subject–verb agreement and English tenses cover them in more depth.

Try this week: for every correction, ask “why?” once. Accept any reason that’s true, in any language.

Start short and build up

Proofreading is tiring because it means overriding the natural way of reading. Keep sessions short:

P1–P2: three to five single sentences, one mistake each, about five minutes.
P3: five or six sentences, some with two mistakes.
P4–P6: a short passage of five to eight sentences with one mistake in some lines.

Ten minutes, three or four times a week, does more than one long session before an exam. And stop while it’s still going well.

Which mistake types to expect at each grade is covered in English proofreading by grade, and if you want material to start with tonight, there are 20 practice sentences with answers for P2–P3.

Make it a game, not a test

Children hunt for mistakes far more willingly when it feels like a game. A few ideas (there are seven in find-the-mistake games to play at home):

Swap roles. You write a sentence with one mistake; your child plays teacher and corrects you. Make obvious mistakes at first.
Score it. One point for finding the mistake, one for fixing it, a bonus for doing it quickly.
Never use red for wrong guesses. A wrong guess is part of looking. Celebrate the finds instead.

That last point is how we designed ProofreadEasy: a found mistake gets a red-pen circle, but a wrong tap turns the word grey, never red, and costs only one star.

When a child keeps missing mistakes even with a routine, there’s usually a specific reason — see why children miss mistakes in proofreading questions.

Frequently Asked Questions

At what age can children start proofreading?

Most children can start in P1 (age 6), as soon as they read simple sentences on their own. Begin with capital letters, full stops and a / an, one mistake per sentence, and add grammar-based mistakes from P2.

Should I tell my child where the mistake is?

Not straight away. Ask a guiding question first (“check the last word” or “how many cats are there?”). If they still can’t find it, show them — then give them a similar sentence so they can find the same kind of mistake on their own.

My English isn’t strong. Can I still help?

Yes. You can run the routine — read slowly, point to each word, check the edges, say it aloud — without being an expert. Use an answer key or an app with explanations for the “why”, and let your child explain it to you.

How is proofreading different from checking my child’s composition?

In a proofreading question the mistakes are planted, there is usually a known number of them, and each has one clear correction. Checking a composition is open-ended. The routine is the same, which is why proofreading practice also helps children check their own writing.

How many sentences should we practise each time?

Five to ten minutes is enough: three to five sentences for P1–P2, five or six for P3, and one short passage for P4–P6. Short, frequent practice works better than long sessions.

ProofreadEasy turns this routine into a game: your child taps the mistakes, fixes each one from three choices and collects stars, and you get a clear explanation of every mistake in your own language. Coming soon to the App Store — see how it works.