A. A. Ergashev and F. F. Vakhobov 2022. THE ESSENCE OF THE CONCEPT OF "PROFESSIONAL ACTIVITY OF A MATHEMATICS TEACHER". JournalNX - A Multidisciplinary Peer Reviewed Journal. 8, 12 (Dec. 2022), 147–154. DOI:https://doi.org/10.17605/OSF.IO/DXG7N.