for later ref only:
LONG TERM EFFECTS IN LEARNING MATHEMATICS IN FINLAND—CURRICULUM CHANGES AND CALCULATORS : Olli Martio
Policy Development and Reform Principles of Basic and Secondary Education in Finland since 1968 :
Erkki Aho, Kari Pitkänen and Pasi Sahlberg
PISA –survey, Finnish schools, teacher training and math. education:
Marjatta Näätänen, Department of Mathematics and Statistics, University of Helsinki, Finland