PENGARUH MODEL PEMBELAJARAN RICOSRE TERHADAP KEMAMPUAN PEMECAHAN MASALAH SISWA PADA MATERI VIRUS<br>(THE EFFECT OF THE RICOSRE LEARNING MODEL ON STUDENTS' PROBLEM-SOLVING SKILLS AT VIRUS MATERIAL)

This study aims to analyze the effect of Reading, Identifying the problem, Constructing the solution, Solving the problem, Reviewing, and Extending the problem-solving (RICOSRE) learning model on students' problem-solving abilities on virus material. This study is quasi-experimental with a pretest-posttest nonequivalent control group design. The population of the study was all grade X students at SMAN 2 Purbalingga. The sample consisted of 72 students determined by cluster random sampling technique, each with 36 students from class XE as the experimental class and class XD as the control class. Data collection techniques used tests and observations. Data analysis techniques used descriptive analysis, N-Gain, and Mann-Whitney U tests. The results showed that the RICOSRE learning model significantly affected students' problem-solving abilities on virus material of 0.049