DR KINGA MORSANYI, READER IN MATHEMATICAL COGNITION, LOUGHBOROUGH UNIVERSITY, UK
Setting the scene
Dyscalculia is a specific learning disability characterised by persistent and severe difficulties in learning and understanding maths. It affects around six per cent of the population, meaning that most mainstream classrooms are likely to include at least one student with dyscalculia.
Dyscalculia is distinct from general low attainment, temporary learning delays and maths anxiety, and it persists despite age-appropriate teaching and access to targeted educational support. It is equally common across genders.
Dyscalculia is a neurodevelopmental condition with a biological basis, although environmental factors also play a role in its development. It affects the ability to understand and process numerical information, remember and retrieve basic number facts, perform calculations accurately and fluently, and apply mathematical reasoning.
Dyscalculia is a lifelong condition that impacts educational attainment, employment, financial decision-making and wellbeing. Without adequate support, individuals with dyscalculia are at increased risk of developing mathematics anxiety, low self-esteem and poor mental health.
Despite its prevalence, dyscalculia remains significantly under-recognised in the UK. Early identification, interventions targeting individual knowledge and skills gaps, and improved teacher knowledge can significantly improve outcomes for students with dyscalculia. Mainstream teachers therefore play a vital role in recognising early signs of dyscalculia and providing evidence-based classroom support.
Key ideas for practice: What teachers need to know about dyscalculia
Teachers should understand that dyscalculia is not caused by poor teaching, lack of effort or low intelligence. Students with dyscalculia often experience persistent difficulty in understanding foundational mathematical concepts and procedures, including reading and writing numbers, understanding place value, doing basic arithmetic, learning multiplication tables, working with decimals and fractions, logical reasoning and solving word problems.
One important implication for classroom practice is that students with dyscalculia require a strengthening of their foundational mathematical concepts and procedures, which may be several years behind age-appropriate content. Maths learning is cumulative: without secure understanding of basic concepts, later learning becomes increasingly difficult, and knowledge gaps widen over time.
Evidence indicates that maths-specific interventions are much more effective than general cognitive or working memory training. Learning should be carefully sequenced, with opportunities for regular review and reinforcement to ensure that students consolidate essential knowledge before moving on to more complex ideas.
Support should also be individualised. Dyscalculia presents differently across learners, and interventions should be tailored, based on individual profiles of strengths and weaknesses. Students may require adaptations that reduce unnecessary cognitive demands. For example, simplifying task instructions, breaking problems into smaller steps, allowing additional processing time and using visual representations and manipulatives can improve access to learning without reducing expectations.
Teachers should also recognise that dyscalculia affects more than classroom maths. Difficulties with time, money, organisation and sequencing skills may influence wider participation in school and life beyond it. By adopting inclusive approaches and monitoring progress carefully, teachers can identify students who may require additional assessment or specialist support, whilst ensuring that all learners have equitable opportunities to succeed.
Action points for teachers
1. Prioritise early identification
Monitor progress carefully and look for persistent mathematical difficulties that remain despite targeted teaching. Patterns, such as ongoing problems with number sense, quantity, place value and basic arithmetic, may indicate a need for further investigation. Record evidence over time and work collaboratively with SEND (special educational needs and disabilities) staff and families where concerns arise.
2. Use structured mathematics-specific teaching
Teach mathematical concepts in small, carefully sequenced steps, ensuring that learners have mastered foundational knowledge before introducing more advanced skills. Regular retrieval practice, using manipulatives, opportunities to revisit previous learning and explicit teaching of efficient strategies can support confidence and long-term retention. Offering partial solutions and presenting multiple-choice questions, instead of open-ended questions, can also be used to support learning.
3. Be aware of individual strengths and weaknesses and any co-occurring conditions
Dyscalculia commonly co-occurs with other neurodevelopmental conditions, such as communication and language difficulties, dyslexia and ADHD. Even without such diagnoses, pupils with dyscalculia may experience working memory difficulties or slow processing speed. Efficient interventions should specifically build on individual cognitive strengths and weaknesses.
4. Reduce unnecessary cognitive demands
Present information clearly and avoid overwhelming pupils with multiple instructions or unnecessary distractions. Break complex calculations into manageable stages and provide visual supports, such as number lines, place-value charts or concrete manipulatives, to strengthen conceptual understanding.
5. Adapt learning without lowering expectations
Provide reasonable adjustments that enable students to demonstrate their understanding, such as modifying task presentation or reducing unnecessary working memory demands. Allow additional thinking time where appropriate. Maintain ambitious learning goals whilst recognising that students may require different routes to achieving them.
6. Develop your professional knowledge
Given the limited dyscalculia training currently available, teachers should actively engage with professional learning opportunities and current research. Improved understanding enables earlier identification, more appropriate classroom support and better communication with colleagues, parents and specialist professionals.
Top tips
- Recognise that dyscalculia is a lifelong learning disability with implications that extend beyond school mathematics: It is not the same as low mathematics performance, poor motivation or mathematics anxiety.
- Focus on developing secure mathematical skills and understanding: Use structured, maths-specific teaching and regular review of foundational concepts.
- Identify and support pupils early: Prompt identification, specialist intervention, classroom adjustments and collaboration with SEND colleagues and parents can reduce widening attainment gaps and improve pupils’ confidence, wellbeing and long-term outcomes.
Want to know more?
- The SpLD Assessment Standards Committee provides UK guidance on assessment standards and professional practice for identifying dyscalculia: sasc.org.uk/news/maths-difficulties-and-dyscalculia-guidance-march-25/
- The DSM-5-TR (DOI: 10.1176/appi.books.9780890425787) and ICD-11 (icd.who.int/en) diagnostic manuals outline the internationally recognised diagnostic criteria for dyscalculia.
- The Dyscalculia Network offers practical guidance for educators, including classroom strategies, professional development opportunities and information about dyscalculia: dyscalculianetwork.com
- This animation summarises some basic information about dyscalculia: youtube.com/watch?v=4wjO9JoAFIA
- ‘What do educators know about dyscalculia in the UK, Italy, Vietnam and South Africa?’ by Roulstone, Morsanyi, LÊ et al. (2026, Neurodiversity 4: 1–17) summarises common knowledge gaps and misconceptions about dyscalculia, and offers a short quiz to test your understanding.
- ‘Dyscalculia: Scientific evidence and policy implications’ from Morsanyi (2026, post.parliament.uk/dyscalculia-scientific-evidence-and-policy-implications) discusses dyscalculia research and its implications for educational policy.
- Numeralis (numeralis.co.uk) is an evidence-based screening tool for dyscalculia.
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