TY JOUR TI Methodological Features of the Formation of Ideas about Units of Time Measurement in Primary Schoolchildren (Correcting All-Russian Verification Work Errors) KW the formation and development of temporal representations KW the organization of the study of time KW younger schoolchildren JO Standards and Monitoring in Education AU Moshnina, R.. AU Khilenko, T.. PY 2021 IS 9 PB INFRA-M Academic Publishing LLC.