Louise Lehane from EPI-STEM recently published an article entitled "Getting to the CoRe of it: A review of a specific PCK conceptual lens in science educational research" along with Dr Adam Bertram, senior lecturer in Science Education in RMIT University, Melbourne AU. This article provides a review of the literature pertaining to a PCK lens (the Content Representation or CoRe tool) and helps to illustrate its importance in science education research.
The article can be viewed at the following link:
https://www.sciencedirect.com/science/article/pii/S0187893X15000671