TY JOUR TI Ability to Solve Problems in Real-Life Situations as the Main Objective of School Students Education in the Context of Program for International Student Assessment (PISA) KW international comparative research KW assessment of learning achievement KW Programme for International Student Assessment (PISA) KW problem KW problem-based learning method. JO Scientific Research and Development. Socio-Humanitarian Research and Technology AU Samsonova, N.. AU Firago, A.. PY 2014 IS 3 PB INFRA-M Academic Publishing LLC.