Why Kids Write Letters Backwards

Writing letters backwards is normal through kindergarten and first grade, and most children grow out of it around second grade, at about age 7. Reversing b and d is not, on its own, a sign of dyslexia. A study that followed 130 children from age 5 or 6 found that the ones who later struggled to read were no more likely to reverse letters than the ones who did not.

What helps most is giving your child a way to check, rather than correcting the letter after it comes out wrong. That means a start point their hand can feel, a word like bed whose shape shows the answer, and the letter’s sound, which is the one thing about b and d that is never the same.

A reversal is a mix-up about direction, not a problem with eyesight, which is why it fades as a child reads more and why a cue they can check fixes it faster than correction. This page includes two free printable packs for the four pairs children mix up.

Why do kids write letters backwards?

Children write letters backwards because the human visual system treats a mirror image as the same object. A cup is a cup whichever way its handle points, and a dog facing left is the same dog facing right. That rule serves a child well for everything they see until they meet the alphabet, where a b facing the other way is a d.

Neuroscientist Stanislas Dehaene and colleagues traced this to the part of the brain that learns to recognize words. It starts out treating mirror images as one shape, a property they found is “deleterious for letter recognition and may explain children’s transient mirror errors.” Learning to read means unlearning that rule for a handful of letters, and that takes time.

Children also flip some letters more than others. Psychologist Rebecca Treiman and colleagues found that 5- and 6-year-olds reverse letters that face left, such as d and J, more often than letters that face right, such as b and C. Most letters in the alphabet face right, and children absorb that pattern without being taught it. A child who is unsure which way to go turns the letter to face right, which is why a d written as a b is more common than the other way round.

Is it normal? What age do letter reversals stop?

Letter reversals are normal until around second grade, at about age 7. Understood, the learning-differences nonprofit, puts it plainly: “Reversing letters is typical and fairly common up until second grade.” The reversals fade as a child reads and writes more, and most children stop without anyone teaching them to.

Age and grade	What is typical	What to do
4-5, preschool and kindergarten	Reversals are common and expected, along with whole words written backwards	Teach the start points and keep practice playful
6, first grade	Still common, especially b and d, and fading with practice	Give your child one cue to check against, such as bed
7 and up, second grade on	Most children have stopped. An occasional reversal that your child catches is fine	Talk to the teacher if reversals are frequent and reading or spelling is also hard

What changes the picture is frequency plus company. One d facing the wrong way in a page of writing at age 7 is ordinary. Reversals on most lines in second grade, alongside trouble reading or spelling words, are worth a conversation with the teacher, because the reading and spelling difficulty is the part that matters.

If a child who had stopped starts reversing again, notice whether it happens when they are writing fast or concentrating on something harder, such as a whole sentence. Ask them to look at the letter again. If they can fix it on a second look, they know the letter, and the slip is about speed rather than knowledge.

Is writing letters backwards a sign of dyslexia?

Writing letters backwards is not, on its own, a sign of dyslexia. The clearest evidence comes from Rebecca Treiman and colleagues, who followed 130 children from age 5 or 6, many of them at higher risk of reading problems. About three years later, the children who had become weaker readers had made more errors writing letters overall, yet “they were no more likely to make reversal errors.”

That fits what dyslexia is. The International Dyslexia Association defines it as “a specific learning disability characterized by difficulties in word reading and/or spelling.” It is a difficulty with the sounds inside words, not with seeing letters the wrong way round, so the signs of dyslexia worth watching are about sounds and words:

• Trouble linking letters to their sounds, or learning them and then losing them
• Difficulty sounding out short words long after classmates can
• Spelling the same word differently from one day to the next
• A family history of reading difficulty

Reversals that persist into second grade alongside those signs are worth raising. Reversals on their own are not. If you are already worried about reading, the guide to what being behind in reading means covers how to tell a gap that closes with practice from a pattern worth an evaluation, and the reading check-in by age shows what to expect year by year.

Why are b and d the hardest letters to tell apart?

b and d are the hardest pair because they are one shape facing two ways. Every other letter in a child’s first set can be told apart by its shape. These two can only be told apart by direction, which is the one thing a young child’s eyes are built to ignore.

Four pairs come up again and again, and they are really one confusion:

Pair	Why it happens	What to check it against
b / d	Same shape, mirrored	Write the word bed: the b is the headboard and the d is the footboard
p / q	The same mirror, below the line	They are b and d dropped below the line, with the circles on the same sides
n / u	Same shape, turned upside down	n keeps its hump on top, u keeps its curve on the bottom
m / w	The same turn, doubled	m is n with a second hump, w is u with a second dip

n/u and m/w are easy to miss because they are turns rather than mirrors, and they get less attention than b/d. Numbers get reversed too, for the same reason.

The same confusion shows up in reading. A child who writes dig as big may also read dad as bab, and the same cue fixes both.

How do you stop b and d reversals?

The way to stop b and d reversals is to give your child a way to check, not to correct them harder. These five steps do that, and they work in this order.

1. Teach b and d apart. Learning both in the same week is the most common cause a parent can control. Reading researcher Timothy Shanahan is direct about it: “Don’t teach b and d together.” In our letter order, b and d are 13 letters apart.
2. Teach the start point, not the shape. b starts like l, with the tall stem first and the bump second. d starts like c, with the round part first and the stem second. The shapes look the same, but the hand starts them differently, and how each letter is formed covers the rest of the alphabet the same way.
3. Give one cue your child can check. Write the word bed. The b and the d face outward like the two ends of a bed, so the word shows the answer. A rhyme or a hand trick has to be remembered and then applied, while bed can be written and looked at.
4. Make the sound the anchor. b and d look alike, but /b/ and /d/ sound completely different. A child who says the sound while writing the letter has a second check that does not depend on direction at all.
5. Correct by pointing at the cue. When a letter comes out backwards, say “check it against bed” rather than “that one is backwards.” The first teaches your child to check; the second makes writing a test.

Five-minute games for b and d

Short, frequent games beat long practice sessions for b and d. A few minutes on most days, while the confusion is active, is enough. Each of these needs nothing you do not already have:

• Letter sort. Write a dozen bs and ds on scraps of paper and have your child sort them into two piles, saying each sound as they go.
• Letter hunt. Pick a page of a picture book or a cereal box and hunt for every b, then every d. Count them together.
• Sky writing. Write a giant b in the air with the whole arm, starting with the tall stem, then a giant d starting with the round part.
• Build bed. Use magnetic letters or letter tiles to build bed, then swap in other words: bad, dab, bud.
• Which one starts it? Say a word, such as ball or dog, and have your child point to the letter it starts with.

Stop the games once your child is getting most of them right, and go back to ordinary reading and writing. The reversals that remain fade with use.

Free b and d reversal worksheets

These free letter reversal printables cover all four pairs: b and d, p and q, n and u, and m and w. Start with the choice pack, where your child decides which letter a picture starts with. Move to the hunt pack once they can tell the pair apart, because hunting is practice for a difference already learned.

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Free printable letter reversal worksheets

Two packs on the four pairs children actually mix up, and both open with the same page of cues so each works on its own. The first asks your child to choose between a pair under a picture, twice over, then which letter a word ENDS with. The second is a hunt: circle every b in a grid of b and d, then every d, and the same for the other three pairs. Lowercase only, because B and D are not confusable and a capital here would be teaching a problem that does not exist.

1. 1Letter Reversals: Which One? (PDF)4 pairs · answer key included · 5 pagesDownload
2. 2Letter Reversals: Find Them All (PDF)4 pairs · answer key included · 4 pagesDownload

When should you worry about letter reversals?

Two signals are worth raising with your child’s teacher:

• Reversals are still frequent in second grade or later, after your child has been taught a cue to check against.
• Reversals come alongside trouble with reading or spelling words: linking letters to their sounds, sounding out short words, or spelling a word the same way twice.

Start with the class teacher, who sees 20 or more children of the same age every year and can say whether your child stands out. If reading is the concern, ask whether a reading specialist should take a look, or whether an evaluation through the school makes sense. If writing itself is painful or exhausting, that points at handwriting rather than reversals, and the signals for that are in when to worry about handwriting.

What is not on that list: an occasional reversal at 5 or 6, a reversal your child catches and fixes, and a reversal that only appears when your child is rushing. All three are ordinary.