Signs of Dyscalculia in Children: What Parents Should Look For

What dyscalculia is, in plain words

The clearest definition I have found is in a medical journal called Deutsches Ärzteblatt International. Its review of dyscalculia calls it “difficulty acquiring basic arithmetic skills that is not explained by low intelligence or inadequate schooling”.

That second half is the part I wish someone had said to me first. This is not about how bright your child is. It is not a verdict on their teacher either. The same review says “about 5% of children in primary schools are affected”. In my son's class that is one child, maybe two. It also says “dyscalculia does not improve without treatment”.

Expect one oddity in the school paperwork. The federal rule is 34 CFR 300.8(c)(10), the part that defines a specific learning disability. It covers a disorder that shows up as “the imperfect ability to listen, think, speak, read, write, spell, or to do mathematical calculations”. The conditions it names as examples are “perceptual disabilities, brain injury, minimal brain dysfunction, dyslexia, and developmental aphasia”. Dyslexia is there. Dyscalculia is not. So the form may say “specific learning disability” even though the areas being tested are the two the rules use for math: “Mathematics calculation” and “Mathematics problem solving”.

Signs of dyscalculia by age

The checklist I keep going back to is Understood's signs of dyscalculia at different ages. Read its opening line twice: “all kids have trouble with math from time to time. But kids with dyscalculia struggle a lot more than other kids the same age.” Hold that comparison in your head for every sign below.

Preschool and kindergarten

• Trouble learning to count, and skipping numbers “long after kids the same age can remember numbers in the right order”.
• No sense of what counting is for. Asked for five blocks, your child hands over a heap.
• Trouble with patterns, “like smallest to largest or tallest to shortest”.
• Trouble joining up a number symbol, its name and a group of things.

At this age I would not read much into any single one of these. My view is that the useful question is whether counting is going anywhere over a term. Not whether it is perfect this week.

Grade school, where most parents first notice

• “Trouble learning and recalling basic math facts, like 2 + 4 = 6”, so the same fact is new every time.
• Still using fingers to count “instead of using more advanced strategies (like mental math)”.
• Mixing up the signs, and using them the wrong way round.
• Tripping on the language of math, phrases like greater than and less than.
• “Trouble with place value, often putting numbers in the wrong column”.

With a child I once tutored, the arithmetic was not what made me pay attention. It was watching him count up from the start every single time. He had no sense that he had met the question before.

Middle school and older

• Still stuck on ideas the class has moved past, like commutativity and inversion.
• Reading a word problem with no plan for it.
• Losing track of money and of what things cost. Keeping score in a game is hard.
• Avoiding anything with numbers in it, board games included, rather than risk it.

The signs that usually mean something else

Most children I have met who looked like this were not dyscalculic. In my experience it was something else instead. I would rule these out before worrying.

Math anxiety. Understood says plainly that dyscalculia “isn't the same as math anxiety”. The two do travel together. The Deutsches Ärzteblatt International review notes that “many affected children acquire a negative attitude to counting and arithmetic”, which “often develops into a specific mathematics anxiety or even a generalized school phobia”. What I watch for is the gap between settings. A child who is fluent at the kitchen table and falls apart in a timed test is showing me fear first.

Gaps in the teaching itself. This one is built into the rules. A school group has to check that the problem “is not due to lack of appropriate instruction in reading or math”. It needs data showing your child was already taught properly by qualified staff. What I notice is that a term of substitute teachers can look like a math disability from the outside, and so can a move between schools, or a long stretch of illness.

A skill that was never fully learned. What I look at underneath is place value, and the times tables. If those are shaky, everything built on top of them looks shaky too. My view is that this one wants practice rather than an assessment. Our math fact practice guide has the order I would drill them in.

Why a checklist cannot give you an answer

This is the part I would not skip. The review puts the test plainly. Dyscalculia is “supposed to be demonstrable by standardized psychometric testing that reveals poor calculating ability despite normal intelligence”. And sorting number trouble from everything else nearby “lies in the area of competence of school psychologists and neuropsychologists”. Those are tests you cannot buy or run at home. That is a good thing.

A real assessment also looks wider than math. The overlap is large: “20% to 60% of all persons with dyscalculia also have learning difficulties of other types, e.g., dyslexia or attention deficit hyperactivity disorder”. So a child who struggles with number facts and with reading needs both looked at together, by one team, in one assessment.

What to ask the school, and how to put it

You do not need the school's permission to start. The federal rule is 34 CFR 300.301. It says “either a parent of a child or a public agency may initiate a request for an initial evaluation”. It also sets a clock. Once you consent, the evaluation “must be conducted within 60 days of receiving parental consent for the evaluation”, or within your state's own timeframe if it has set one.

1. Put it in writing and date it. I would email the principal and the special education coordinator, and I would not leave it at a word at pickup, where nothing is written down.
2. Use the words “I am requesting an initial evaluation”. My view is that asking for extra help, or for a meeting, is a different ask.
3. Name the areas. Ask for “Mathematics calculation” and “Mathematics problem solving” in those words. They are the areas the rules themselves use.
4. Attach what you have seen. Dates, the signs above that match, and two or three pieces of work. Specifics are harder to answer with reassurance.
5. Ask for the consent form. The days above run from your consent, so I would ask when the form is coming.

In my experience the tone that works is not angry. It is calm, specific and written down. And it asks for a process, not for a diagnosis.

What I would do at home while you wait

Keep this small. You may be waiting a while, and nothing is helped by turning every evening into remedial math. Here is the routine I would run. It is yours whether or not you ever buy anything from us.

One honest note on games, ours included. The same review reports what worked in intervention studies: “interventions performed in person by teaching staff (direct instruction) were more effective than computerized ones (mediated instruction)”. The person at the table matters more than the software. Where I do reach for a screen is the repetition, because that is the part I am bad at keeping up. In the Power-Up Arcade, “all the games share each player's practice”. So a question your child got wrong comes back when it is due, not when I happen to remember it. It is practice. It is not an intervention, and it is not an assessment.

Frequently asked questions

What are the signs of dyscalculia in children?

In preschool, Understood's checklist lists trouble learning to count and skipping numbers “long after kids the same age can remember numbers in the right order”. It also lists no real sense of what counting is for, and trouble connecting a number to an object. In grade school it lists “trouble learning and recalling basic math facts, like 2 + 4 = 6” and fingers instead of mental math. Then trouble with phrases like greater than and less than, and “trouble with place value, often putting numbers in the wrong column”. What matters is that the gap lasts and is much bigger than in other children the same age.

Can I diagnose dyscalculia myself with a checklist?

No. The Deutsches Ärzteblatt International review says dyscalculia is “supposed to be demonstrable by standardized psychometric testing that reveals poor calculating ability despite normal intelligence”. It also says that telling number trouble apart from other difficulties “lies in the area of competence of school psychologists and neuropsychologists”. A checklist only helps you decide whether to ask for that assessment.

How do I ask the school to assess my child?

In writing, and you are allowed to start it. The rules at 34 CFR 300.301 say “either a parent of a child or a public agency may initiate a request for an initial evaluation”. Once you consent, the evaluation “must be conducted within 60 days of receiving parental consent for the evaluation”, or within your state's own timeframe. Name the two areas the rules use for math, “Mathematics calculation” and “Mathematics problem solving”. Date the request and keep a copy.

Is dyscalculia the same as math anxiety?

No, and Understood says plainly that dyscalculia “isn't the same as math anxiety”. They do travel together, though. The Deutsches Ärzteblatt International review notes that “many affected children acquire a negative attitude to counting and arithmetic”, which “often develops into a specific mathematics anxiety or even a generalized school phobia”. A child who is fluent when nobody is watching, then falls apart in a timed test, is showing you fear first.

Will my child grow out of it?

The same review states that “dyscalculia does not improve without treatment”. That is the strongest argument I know for asking early rather than waiting another school year. It also reports that “20% to 60% of all persons with dyscalculia also have learning difficulties of other types, e.g., dyslexia or attention deficit hyperactivity disorder”. So an assessment usually looks wider than math.

Do math games help a child with dyscalculia?

Games are practice, not treatment. Nothing on this page should be read as saying otherwise. The Deutsches Ärzteblatt International review reports that “interventions performed in person by teaching staff (direct instruction) were more effective than computerized ones (mediated instruction)”. So the person at the table matters more than the app. What a game can do is keep short daily practice calm, and aimed at the thing your child got wrong. For the shape of that practice, see math practice games.