Penelitian ini dilatarbelakangi oleh rendahnya kemampuan pemecahan masalah matematis peserta didik di sekolah yang diakibatkan karena proses pembelajaran yang masih menggunakan metode konvensional, kurang tersedianya bahan ajar yang dapat memfasilitasi dan menunjang kemampuan pemecahan masalah matematis, serta materi trigonometri yang sulit dipahami peserta didik. Penelitian ini bertujuan untuk mengembangkan E-Modul flipbook berbasis problem based learning pada materi trigonometri yang valid, praktis, dan dapat menunjang proses pembelajaran peserta didik dalam meningkatkan kemampuan pemecahan masalah matematis. Penelitian ini menggunakan jenis penelitian dan pengembangan atau Research and Development (R&D) dengan model pengembangan Plomp yang terdiri dari tiga fase, yaitu fase pendahuluan (preliminary phase), fase pembuatan prototipe (prototipe phase), dan fase penilaian (assessment phase). Penelitian dilakukan di SMAN 1 Garawangi dengan subjek yang digunakan yaitu sebanyak 31 peserta didik kelas X7. Instrumen penelitian yang digunakan yaitu lembar validasi ahli, lembar kepraktisan guru dan peserta didik, serta soal tes pemecahan masalah. E-modul divalidasi oleh tiga validator ahli yang terdiri dari satu dosen pendidikan matematika, satu dosen sistem informasi, dan satu guru matematika. Hasil validasi ahli materi dan media masing-masing diperoleh nilai rata-rata persentase sebesar 93,38% dan 96,25% dengan kriteria sangat valid. Hasil kepraktisan guru dan peserta didik terhadap e-modul masing-masing diperoleh nilai rata-rata sebesar 93,65% dan 89,61% dengan kriteria kepraktisan sangat baik. Hasil uji N Gain diperoleh nilai rata-rata sebesar 0,79 dengan kriteria peningkatan tinggi. Hasil akhir penelitian pengembangan diperoleh produk berupa e-modul flipbook berbasis problem based learning pada materi trigonometri yang valid, praktis, dan dapat meningkatkan kemampuan pemecahan masalah matematis peserta didik. E-modul yang dikembangkan disarankan untuk dapat mengkonstruksi pengetahuan peserta didik secara langsung.
Kata Kunci: E-modul, flipbook, Problem based learning, Kemampuan pemecahan masalah matematis.

This study was motivated by the low mathematical problem solving ability of students in schools due to the learning process that still uses conventional methods, the lack of teaching materials that can facilitate and support mathematical problem solving skills, and trigonometric material that is difficult for students to understand. This study aims to develop an E-Module flipbook based on problem-based learning on trigonometry material that is valid, practical, and can support the learning process of students in improving mathematical problem solving skills. This research uses a type of research and development (R&D) with the Plomp development model which consists of three phases, namely the preliminary phase, the prototyping phase, and the assessment phase. The research was conducted at SMAN 1 Garawangi with the subjects used were 31 students of class X7. The research instruments used were expert validation sheets, teacher and learner practicality sheets, and problem solving test questions. The e-module was validated by three expert validators consisting of one mathematics education lecturer, one information systems lecturer, and one mathematics teacher. The results of the validation of material and media experts each obtained an average percentage value of 93.38% and 96.25% with very valid criteria. The results of the practicality of teachers and students on e-modules each obtained and average value of 93.65% and 89.61% with very good practicality criteria. The N-Gain test results obtained an average value of 0.79 with high improvement criteria. The final results of the development research obtained a product in the form of e-module flipbook based on problem-based learning on trigonometry material that is valid, practical, and can improve students' mathematical problem solving skills. The e-module developed is recommended to be able to construct students' knowledge directly.
Keywords: E-module flipbook, Problem based learning, Mathematical problem solving ability.