ABSTRACT: The aim of the paper is to briefly describe the problem of mathematical skills diagnostics, which is performed by a special teacher. We will characterize dyscalculia – a developmental disorder of mathematical abilities, its types and symptoms. We will describe the professional and methodological problem with which a special teacher in a school facility meets and present a record sheet that is a creative solution to the problem. It contains tasks that capture all areas and factors of mathematical abilities, making it easier to identify a particular type of dyscalculia. In conclusion, we explain the meaning and usefulness of the record sheet, which facilitates the diagnosis of mathematical abilities, shortens the time of investigation, and specifically identifies individual disruptions, and is the starting point for designing a reeducational program for dyscalculus according to its weakened mathematical capabilities.
KEY WORDS: Diagnosis of mathematical abilities. Dyscalculia. Recording Sheet