“Students cannot develop academic knowledge and skills without access to the language in which that knowledge is embedded, discussed, constructed, or evaluated. Nor can they acquire academic language skills in a context devoid of (academic) content.”

– Crandall, 1994.

The 4Cs are different components of CLIL, those are used to construct a conceptual diagram to understand this method. The 4Cs framework (image below) integrates four context-related concepts: content (subject matter), communication (language learning and using), cognition (learning and thinking processes), and culture (development of cross-cultural understanding and global citizenship). The above mentioned is also a strategy to promote the real communication of vehicle language in the learning process.

Coyle, D., Hood, P., & Marsh, D. (2010). Content and language integrated learning. Ernst Klett Sprachen.