PISA könnun í 10. bekkBy Sigurður Halldór Jesson / 19. mars 2015 Fróðlegar slóðir um málefni: http://www.namsmat.is http://www.oecd.org/pisa/ http://youtu.be/Zozu9W5eaSc http://www.ted.com/talks/andreas_schleicher_use_data_to_build_better_schools