COVID-19 contributed to the largest student performance decline in mathematics since 1990. The nation needs cost-effective mathematic interventions to address this drop and improve students' mathematics performance. This study presents a cost-effectiveness analysis (CEA) of three algebraic technological applications, across four conditions: From…

The study aimed to analyse online English teaching and learning experience in higher education institutions in Ukraine through pandemics and wartime. To answer our research questions, we employed a mixed-method research design, which considered social, methodological and emotional aspects of education. We conducted quantitative research to collect…