Editorial Letter

Since the 1990s comparative international studies, i.e. the Trends in International Mathematics and Science Study (TIMSS) and the new demands in the national and globalized labor markets revealed that the educational systems in all countries have to reconsider their existing approaches to the teaching of natural sciences. [...]of whether we are teachers, teacher educators, and/or educational researchers, this special issue of the International Electronic Journal of Elementary Education (IEJEE) will give us several useful ideas originating from applied cognitive theory.