Susantiningdyah, H., Inayati, N., Dirgantari, A.S. and AS, H.C. 2022. USING COLLABORATIVE LEARNING APPROACH TO IMPROVE LEARNER’S MENTAL LEXICON OF WORD ASSOCIATION: Received: 27th August 2021; Revised: 07th December 2021, 31st January 2022, 03rd February 2022; Accepted: 04th February 2022. PUPIL: International Journal of Teaching, Education and Learning. 5, 3 (Feb. 2022), 203–219. DOI:https://doi.org/10.20319/pijtel.2022.53.203219.