SAADAOUI, Nour El HoudaBENAICHA, MarouaGHRIBI, Sarra2025-07-012025-07-012025-06-14http://dspace.univ-temouchent.edu.dz/handle/123456789/6300Our dissertation, entitled “Play-based Pedagogy in the Service of Motivation and Lexical Enrichment among 4th Grade Primary Learners”, is part of an approach aimed at exploring the impact of educational games on the teaching/learning of vocabulary in the FLE (French as a Foreign Language) classroom. The main objective of our research is to examine to what extent the integration of play-based pedagogy can enhance learners' motivation and enrich their vocabulary. The first theoretical part of our work is structured around two chapters: the first is devoted to defining play-based pedagogy, its different types of games, and its integration into the teaching of French as a foreign language. The second chapter focuses on essential concepts such as vocabulary, lexicon, the official vocabulary curriculum for 4th grade primary, as well as lexical learning mechanisms. The second part, which is practical, is based on two research methods: a questionnaire survey conducted with primary school teachers, followed by its analysis, and a field experiment involving two groups of learners – a control group and an experimental group. The results obtained confirmed our initial hypotheses: play-based pedagogy contributes not only to improving learners’ motivation but also to fostering their lexical enrichment and strengthening their interest in vocabulary learning.frplay-based pedagogy, motivation, lexicon, vocabularyاللعب البيداغوجي، التحفيز، المعجم، المفرداتThesis