Lokollo, E. 2022. The Effectiveness of Cooperative Learning Strategy to Increase the Speaking Skill at the Nineth Grade Students of SMPN 1 Kokoda. INTERACTION: Jurnal Pendidikan Bahasa. 9, 1 (May 2022), 300-308. DOI:https://doi.org/10.36232/jurnalpendidikanbahasa.v9i1.5988.