From invention to convention children's different routes to literacy ; curriculum concepts and research evidence on language experience in open classrooms ; [prepared for the International Conference "Intergrating Research and Practice in Literacy" at the London Institute of Education, March 13 - 14, 1997] - Brügelmann, Hans 1946-; Werner, Nicole; Nienhaus, Marc (Berichte aus dem Projekt OASE, 1997)