APPLICATION OF A COOPERATIVE LEARNING MODEL OF CONCEPT SENTENCE TYPE ASSISTED WITH SERIES OF PICTURES TO IMPROVE PARTICIPANTS’ NARRATIVE ESSAY WRITING SKILLS EDUCATION IN CLASS IV SDN 04 CUPAK SOLOK DISTRICT. PJP [Internet]. 2024 Apr. 13 [cited 2026 Mar. 13];13(1):145-56. Available from: https://jurnal.ar-raniry.ac.id/index.php/Pionir/article/view/22636