GHERBAOUI A. The Bubble: A Tool for Mastering Spelling in a Heterogeneous Classroom – A Case Study of Second-Year Middle School Students. J.Ld. letters [Internet]. 2018 Sep. 10 [cited 2026 Apr. 16];2(03):1-17. Available from: https://journals.univ-msila.dz/index.php/OLDA/article/view/6959