Efektivitaspeermodelingberbasisteoribelajarsosialbandura Terhadap Kemampuan Pemecahan Masalah Matematisdan Kolaborasi Siswakelas Vsdnreksosari 03

Mathematics learningin elementaryschools oftenfaceschallenges, such asstudents'low abilityto solve storyproblems andlack of cooperative interaction during group learning. This study aims to analyze the effectiveness of implementing peer modeling strategy based on Albert Bandura's Social Learning Theory on improving mathematical problem-solving skills and collaboration skillsof fifth-gradestudentsat SDNReksosari03. The approach usedis a descriptive mixedmethodwith a one-group pretest-posttest designin asmallclass of 8 students (6malesand2females). Data were collectedthrough HOTSproblem-solvingtests, collaboration observation sheets, in-depth interviews, andfield notes. The results showedan increase in the average score of problem-solving test from 41.25 (pretest) to 78.75 (posttest) with an N-gain score of 0.64 (medium/effective category). Meanwhile, theaveragescoreof students'collaborationskills jumpedfrom37.5% to 83.3%. The presence of peer models provedeffective in reducing math anxiety, facilitating understanding of Polya's thinking flow, andcreating an inclusive group discussion environment. It can be concludedthat peermodeling basedon Bandura's theoryis effective foroptimizing students'cognitive andaffective abilities.