Pengaruh Model Pembelajaran Connecting, Organizing, Reflecting, Extending (CORE) terhadap Kemampuan Pemecahan Masalah Matematis Siswa

Abstract

The problems studied in this study are related to the less than optimal achievement of students' mathematical problem-solving abilities. The purpose of this study was to determine the effect of the CORE learning model on the mathematical problem-solving abilities of grade VIII students in the Odd Semester of SMP Negeri 34 Bandar Lampung in the 2025/2026 Academic Year. This study used an experimental method with the population in this study being all grade VIII students of SMP Negeri 34 Bandar Lampung consisting of 7 classes. While the sample was taken from two classes, namely class VIII C as the experimental class that applies the CORE learning model, and class VIII A as the control class that applies the conventional learning model. The sample was taken using the Cluster Random Sampling technique. To determine students' mathematical problem-solving abilities, the author conducted a test in the form of five essay questions that had previously been tested for validity and reliability. Hypothesis testing in this study used the t-hit formula and obtained a value of t = 3,51. From the t-distribution table at a significance level of 5%, it is known that t = 1,67, so , which means that the average mathematical problem-solving ability of students using the CORE learning model is higher than the average mathematical problem-solving ability of students using the conventional learning model.