The Five C's of teaching a foreign language are Communication, Cultures, Connections, Comparisons, and Communities.
Read more here: "Foreign Language Standards: Understanding ACTFL's Five C's for Teaching French, Spanish & More" http://languagestudy.suite101.com/article.cfm/foreign_language_standards#ixzz0AQIi4xv4
The Five C's in teaching foreign language are Communication, Cultures, Connections, Comparisons, and Communities. The communication standard stresses the use of language for communication in "real life" situations. Culture is experiencing other cultures develops a better understanding and appreciation of the relationship between languages and other cultures, as well as the student's native culture. World languages instruction must be connected with other subject areas. The content from other subject areas is connected through lessons. For comparisons Students are encouraged to compare and contrast languages and cultures. And finally continuing the learning experiences from the world language classroom to the home and community emphasizes living in a global society.
I have attached a link for more information. Many times if you are having difficulty locating an answer to a question the easiest thing to do would be to "Google" your exact question, even if it is long, and something is bound to come up!
Cultures, Connections, Comparisons, Communication Communities