“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” (2024) PIONIR: JURNAL PENDIDIKAN, 13(1), pp. 145–156. doi:10.22373/pjp.v13i1.22636.