Dyscalculia is a math learning disability that impairs an individual’s ability to learn number-related concepts, perform accurate math calculations, reason and problem solve, and perform other basic math skills. 1. Dyscalculia is sometimes called “number dyslexia” or “math dyslexia.”


Cluster Number:
Wiki Number: W071
Diagnosis: Dyscalculia (Math Abilities)
US Patients: 3-6%
World Patients:
Sex Ratio:
Age Onset:
Brain Area: intraparietal sulcus, frontal lobe, and left angular gyrus; difficulty with spatial awareness and memory
Symptoms: math abilities may stop at the 4th grade level, that may also be a developmental delay
Progression: Limitations in memory, counting, doing math problems, avoidance of careers where math or science is a component
Medications: transcranial direct durrent stimulation of the left parietal (anode) and right parietal lobe (cathode)improved math for 2.
Therapies: Several computerized training programs are listed in the Wikipedia article followed by the article’s bibliography.

Youtube Video: How to Help a Child with Dyscalculia

Youtube Video:

What is Dyscalculia?

Amazon or Library Book:

Math Workbook for Kids

with Dyscalculia

Amazon or Library Book: Understanding Dyscalculia and Numeracy Difficulties

Click the book to link or buy from Amazon.

Click the book to link or buy from Amazon.

Support Group: dyscalculia-blog.com (“Calcularis” is the owner.

It is private and may only sell support materials.)


The world-wide medical research
reports chosen for each diagnosis 

Clicking each title opens the
PubMed article’s summary-abstract.

  • DYSCALCULIA, a Venus flytrap mutant without the ability to count action potentials
    by Anda-Larisa Iosip on January 24, 2023

    The Venus flytrap Dionaea muscipula estimates prey nutrient content by counting trigger hair contacts initiating action potentials (APs) and calcium waves traveling all over the trap.¹^(,)²^(,)³ A first AP is associated with a subcritical rise in cytosolic calcium concentration, but when the second AP arrives in time, calcium levels pass the threshold required for fast trap closure. Consequently, memory function and decision-making are timed via a calcium clock.³^(,)⁴ For higher numbers of APs...

  • The two-network framework of number processing: a step towards a better understanding of the neural origins of developmental dyscalculia
    by Elise Klein on January 20, 2023

    Developmental dyscalculia is a specific learning disorder that persists over lifetime and can have an enormous impact on personal, health-related, and professional aspects of life. Despite its central importance, the origin both at the cognitive and neural level is not yet well understood. Several classification schemas of dyscalculia have been proposed, sometimes together with an associated deficit at the neural level. However, these explanations are (a) not providing an exhaustive framework...

  • Effectiveness of digital game-based trainings in children with neurodevelopmental disorders: A meta-analysis
    by Xiaoyu Ren on January 5, 2023

    Digital game-based training programs have recently been used to train the cognitive abilities of children with neurodevelopmental disorders (NDDs). However, the effects of training remain controversial. The present meta-analysis explored the effectiveness of digital game-based training in children with NDDs and examined the possible moderators of its effects. Twenty-nine studies with cognitive outcomes in 1535 children were included in the present meta-analysis. The results showed that digital...

  • From vision to cognition: potential contributions of cerebral visual impairment to neurodevelopmental disorders
    by Sylvie Chokron on December 22, 2022

    Vision has a crucial role to play in human development and functioning. It is, therefore, not surprising that vision plays a fundamental role in the development of the child. As a consequence, an alteration in visual function is, therefore, likely to hinder the child's development. Although ocular disorders are well known, diagnosed and taken into account, cerebral visual impairments (CVI) resulting from post-chiasmatic damage are largely underdiagnosed. However, among the disorders resulting...