Complex sentence: Originally a concept developed in Sweden in the 1950s, Forest School was also adopted in Denmark where it became an embedded part of the curriculum for pre-school children (under seven years) stemming from their småbørnspædagogik, or'Early childhood education'.
Split into simpler sentences: Originally a concept developed in Sweden in the 1950s, Forest School was adopted by Denmark. Here, it became an embedded part of the curriculum for pre-school children (under seven years) where it stemmed from their småbørnspædagogik, or'Early childhood education'.