TY JOUR TI Electronic Textbook in Higher Mathematics Based on Visualization of Educational Content KW digitalization of education KW person-centered learning KW individual trajectories KW electronic textbook KW visualization of educational content KW step-by-step solution of higher mathematics problems JO Standards and Monitoring in Education AU Konnova, L.P. AU Stepanyan, I.K. PY 2024 IS 12 PB INFRA-M Academic Publishing LLC.