PT Journal AU Juvova, A Chudy, S Neumeister, P Plischke, J SO e-Pedagogium PY 2015 BP 21 EP 32 VL 15 IS 2 DI 10.5507/epd.2015.014 DE 21st Century skills; educational policy; quality of education; lifelong learning; self-regulated learning; primary school; teacher education ER