This short article illustrates some aspects of the general chemistry courses in the teaching classes A028, A034, A050 and B12 activated in UNICAM in the PF60/30/36 enabling courses. These PF courses were introduced in Italy in the Prime Minister Decree of 4th August 2023 to offer an opportunity for postgraduate training qualifying for teaching in first and second levels secondary schools. In particular, this article describes teaching approaches based on four fundamental pillars of chemistry teaching: 1) disciplinary knowledge, 2) the importance of epistemological approaches, 3) the application and development of models, and 4) laboratory practices.