The purpose of this study is to investigate a few primary school teachers approach to their education work in sustainable development. The teachers work in Green Flag schools, which is a network that offers teachers teaching material for the education in sustainable development. Research has shown that teachers lack of knowledge in how the education in sustainable development should be designed.   This study proceeds from these following questions: How does the interviwed teachers motivate their goals and didactic choices in the education of sustainable development? The investigation is based on a method triangulation. With qualitative interviews of six primary schools teachers and a text analysis of the teaching material the teachers use I am going to answer the questions of this study. Previous research has shown that there is three teaching traditions teachers can approach and in this study the aim of the teachers will be analyzed by the three traditions. The research shows that a normative teaching tradition is the most occurring teaching tradition with the education for sustainable development. The research also shows that teachers prefer to work  practical so that the students can experience the contents of sustainable development.