2023-04-152023-04-152017FERNANDES, Paulo Ricardo Dias; SOUSA FILHO, Sinval Martins de. Classes de palavras do português brasileiro: um estudo sobre seus critérios de classificação na sala de aula de educação básica. Revista de Letras Dom Alberto, Ondina, v. 2, n. 1, p. 1-18, 2017. Disponível em: https://unisba.edu.br/revista/revista-de-letras-dom-alberto-v-2-n-1-2017/. Acesso em: 12 abr. 2023.e- 2316-2635http://repositorio.bc.ufg.br/handle/ri/22348This article makes a study about the teaching of Portuguese word classes during the second phase of Elementary Education and about how students of this level of school conceptualize words in their classes. It also aims to verify the presence of multiplicity and coherence among the classification criteria of words proposed by the linguist Joaquim Mattoso Câmara Junior for each of the ten grammatical classes, namely: semantic, morphological and functional. The methodology adopted is the case study, and an open questionnaire applied to 50 students from the 8th and 9th grade was used for data generation. The theoretical foundation follows the postulates of Câmara Jr. (2008), Antunes (2007), Basílio (2004) and Oliveira (1977). The results shows that there is in the students' perception as well as in the grammar studies analyzed the semantic criterion has a prevalence over the others in the class classification of words.porAcesso Abertohttp://creativecommons.org/licenses/by-nc-nd/4.0/GramáticaClasses de palavrasCritério semântico, morfológico e funcionalEnsino fundamentalGrammarWord classesCriterion semantic, morphological and functionalElementary schoolArtigo