invited lecturer at Prof. Ana Margarida Abrantes’s class (Faculty of Human Sciences -Portuguese Catholic University ) on Histórias da Língua a course of Licenciatura de Línguas Estrangeiras Aplicadas (Bachelors in Applied Foreign Languages), (duration: 60 minutes) to international students, session conducted in English, about the continuum of the relation between gestures and language, gestures and signs co-speech gestures and signs as lexicon in sign languages, and the close relation between language identity and culture.