(SE)construire un vocabulaire is a French-language resource produced by the Secteur GFEN, focusing on strategies for building and expanding vocabulary in language learning. Published in 2002 by Chronique Sociale, the book offers practical guidance, reflective exercises, and theoretical insights aimed at educators, learners, and anyone interested in lexical development. It presents approaches that encourage active engagement with words, contextual usage, and the social dimensions of language acquisition. The work draws on the GFEN’s pedagogical tradition, emphasizing collaborative and reflective practices. Though concise, it provides a solid foundation for designing vocabulary-rich activities and fostering deeper understanding of how words are learned and retained.