Through their collaboration in the three learning studies the teachers learned about the
relationship between what was intended, what was enacted and what was learned. The
teachers’ learning in the learning studies was reflected in their ways of handling
the object of learning in the PCK post-test but also in the way they talked about their
teaching in the interviews after the learning studies. Nuthall (2004) noted that teachers
need to acquire a theory that can be used as an explanatorymodel and as a guiding principle
for understanding the relation between their teaching and their students learning.
The theory should also lead the teacher to more easily understand what to look for
and how to interpret his or her teaching