Assessing schoolchildren�s 21st century cognitive and behavioural development

Relevance. The study of effective methods for developing cognitive skills among schoolchildren is extremely relevant. This is crucial to ensure their proper preparation for the challenges of the modern world, which is characterized by rapidly changing transformations and the dominance of digital technologies. Purpose. The purpose of the research is to determine the degree of effectiveness of approaches to formative assessment of the development of cognitive skills among schoolchildren of the 21st century. Methodology. A system of scientific research methods was used, including analysis, synthesis, comparison, surveys, mathematical statistics, and observations. Results. The study showed that using the results of residual, activity, local, and modular assessment contributes to improving the quality of education and developing students� communicative and reflective abilities. Model examples of item-by-element assessment of tasks for schoolchildren during formative assessment are provided. An algorithm for conducting formative assessment within one academic period has been developed. The analysis of tasks performed by schoolchildren during formative assessment showed that test tasks must be developed differently for each content component. Conclusions. The results obtained during the research should be used in developing methodological materials for teachers. These materials should address the organization of the educational process and approach to the formative assessment of the cognitive skills of schoolchildren. Keywords: final certification; academic results; quality learning; mental skills