Development of a Guided-Discovery Learning-Based Module to Improve Mathematical Problem-Solving Ability on Quadrangle Materials

This study creates a valid, practical, and effective discovery-based module to improve students' ability to solve mathematical problems on quadrilateral content. This study employs the definition, design, and development phases of the research and development process. Validation sheets, student response questionnaires, and test questions were the study tools utilized. Techniques for data analysis using percentages and N-gain. Based on the findings of a study using guided exploration modules to enhance students' ability to solve quadrilateral problems in class VII SMP, which was  valid with 76.92%. Results from the practicality test with practical categories were 79.37%. Student ability to solve mathematical problems shows effectiveness. The increase in the mathematical problem-solving ability of each student is in the medium category with an average N-gain of 0.48139.