Wahidah, N. 2026. The Effect Of Using Poster In The Canva Application To Improve Students’ Writing Ability At Twelfth Grade Students Of SMAN 9 Mandau. Jolly Journal of English Education. 4, 1 (Jun. 2026), 54–65. DOI:https://doi.org/10.63435/jjee.v4i1.293.