<![CDATA[ABSTRACT The availability of digital learning resources capable of accommodating differences in students’ readiness, interests, and learning profiles remains a challenge in implementing differentiated learning within the Merdeka Curriculum. This condition highlights the need for learning materials that not only utilize technology but also provide flexible learning experiences according to students’ characteristics. This study aimed to develop an interactive teaching module based on differentiated learning and to examine its feasibility, practicality, and effectiveness in the learning process. The study employed a Research and Development (R&D) method using the ADDIE model, consisting of Analysis, Design, Development, Implementation, and Evaluation. The research was conducted at SMAN 1 Lubuk Batu Jaya during the 2025/2026 academic year and involved 63 eleventh-grade students. Data were collected through interviews, observations, documentation, validation and user-response questionnaires, and learning achievement tests. The validation results indicated feasibility scores of 89.52% from the material experts and 93.30% from the media experts. Teacher and student assessments reached 93.89% and 93.78%, respectively. Effectiveness was demonstrated by an increase in the average score from 59.04 on the pretest to 87.96 on the posttest, with an N-Gain score of 0.711 (71.1%), categorized as high. Therefore, the developed module is feasible, practical, and effective as a learning resource to support differentiated learning and the implementation of the Merdeka Curriculum. ABSTRAK Ketersediaan sumber belajar digital yang mampu mengakomodasi perbedaan kesiapan, minat, dan profil belajar peserta didik masih menjadi tantangan dalam penerapan pembelajaran berdiferensiasi pada Kurikulum Merdeka. Kondisi tersebut menunjukkan perlunya bahan ajar yang tidak hanya memanfaatkan teknologi, tetapi juga menyediakan pengalaman belajar yang fleksibel sesuai karakteristik peserta didik. Penelitian ini bertujuan mengembangkan modul ajar interaktif berbasis pembelajaran berdiferensiasi serta menguji kelayakan, kepraktisan, dan efektivitas penggunaannya dalam pembelajaran. Penelitian menggunakan metode Research and Development (R&D) dengan model ADDIE yang meliputi Analysis, Design, Development, Implementation, dan Evaluation. Penelitian dilaksanakan di SMAN 1 Lubuk Batu Jaya pada tahun ajaran 2025/2026 dengan melibatkan 63 peserta didik kelas XI. Data diperoleh melalui wawancara, observasi, dokumentasi, angket validasi dan respons pengguna, serta tes hasil belajar. Hasil validasi menunjukkan tingkat kelayakan sebesar 89,52% dari ahli materi dan 93,30% dari ahli media. Penilaian guru dan peserta didik masing-masing mencapai 93,89% dan 93,78%. Efektivitas ditunjukkan oleh peningkatan rata-rata nilai dari 59,04 pada pretest menjadi 87,96 pada posttest, dengan nilai N-Gain sebesar 0,711 (71,1%) dalam kategori tinggi. Dengan demikian, modul yang dikembangkan layak, praktis, dan efektif digunakan sebagai sumber belajar untuk mendukung pembelajaran berdiferensiasi serta implementasi Kurikulum Merdeka.]]>
