Different conceptualizations exist about the components of the knowledge teachers need to teach mathematics with professional consciousness, and a researcher needs to describe and assess that knowledge. The fact, however, is that different conceptualizations respond to different needs, and thus, the variety is even a chance to develop the field…

The relation between teaching, instruction and children's learning arises whenever models of the teaching-learning process are discussed or whenever problems of learning occur. Despite massive research efforts we still know little about how differences in learning activities are related to students' learning. The primacy of teachers and teaching…

No one would dispute the claim that teacher training in the university and training colleges has long been in urgent need of reform. Even so, nothing is getting done. However, there are some efforts made in North-Rhine/Westphalia, where a committee of experts has recommended a double package consisting of six semesters of specialized studies…