PENGEMBANGAN MODUL AJAR BERBASIS PBL TERINTEGRASI APLIKASI QUIZIZZ UNTUK MENINGKATKAN PEMAHAMAN KONSEP SISWA KELAS VIII PADA MATERI KEKONGRUENAN

Abstract

This study aims to examine the validity and practicality of a teaching module on the topic of congruence using the Problem Based Learning (PBL) model integrated with the Quizizz application. The development method used is the Plomp model, which consists of five phases: preliminary investigation, design, realization/construction, test-evaluation-revision, and implementation. The primary instruments used were validation sheets and student response questionnaires. The validation results from three expert validators showed a feasibility score of 87.37%, categorized as "Very Valid." Meanwhile, the practicality test involving five groups of students yielded an average score of 90.04%, falling into the "Very Practical" category. This module was developed based on student difficulties in understanding the concept of congruence, particularly in identifying congruent plane figures and applying them in problem-solving contexts. The implementation of the PBL model and the integration of interactive tools such as Quizizz encouraged students to be active, think critically, and collaborate effectively. The results indicate that the developed teaching module meets the criteria of validity and practicality, making it suitable for use as a learning resource in junior high school mathematics classes, especially for the topic of congruence.