Prasadityo, B.R., Masykuri, M. and Utami, B. 2023. EMPOWERMENT OF PROBLEM-SOLVING SKILLS THROUGH THE INVESTIGATION THROUGH COOPERATIVE PROBLEM SOLVING (ITCPS) MODEL IN LIVING OF CLASSIFICATION MATERIALS. JPPIPA (Jurnal Penelitian Pendidikan IPA). 8, 2 (Dec. 2023), 52–58. DOI:https://doi.org/10.26740/jppipa.v8n2.p52-58.