DEVELOPMENT OF PROBLEM-BASED LEARNING-BASED MATHEMATICS WITH THE ASSISTANCE OF GEOGEBRA APPLICATIONS TO IMPROVE STUDENTS' MATHEMATICAL CONCEPTS UNDERSTANDING ABILITY

This research is a development (R & D) that aims to improve students' ability understand mathematical concepts with learning media assisted by problem-based geogebra applications. The benefit of this students can foster their interest in mathematics the help application technology so be active and think logically broadly. uses method "Four-D Model" or 4-D model which includes four stagesof development, namely: define, design, develop disseminate. process validate product (Sugiyono, 2019: 394). Meanwhile, according Sariani, results explained geogebra-assisted materials, lesson implementation plans (RPP), teacher books (BG), student (BS), group worksheets (LKK), concept comprehension test instruments, disposition questionnaires. Out 38 students, 5 were incomplete completeness rate 20% 33 80%. For who are more motivated, have deeper understanding, better math skills. Development instrument reaction form sheets, program drafts, works Student questionnaires knowledge tests also given on stage. Once production assessment teaching materials instruments complete, validators will proceed previously discontinued instruction, math, instrumentation use evaluation sheets. answer using such as GeoGebra used assess understanding topics at intervals 2.5–M–3.5 valid categories.Keywords: Geogebra, Problem Based Learning , Understand Mathematical Concepts Abstrak Penelitian ini merupakan penelitian pengembangan (R&D) yang bertujuan untuk meningkatkan kemampuan pemahaman konsep matematis siswa dengan pembelajaran berbantuan aplikasi berbasis problem based learning. Manfaat adalah agar dapat menumbuhkan minat belajar meraka dalam matematika bantuan teknologi aktif dan berfikir logis serta luas. menggunakan metode “Four-D Model” atau meliputi empat tahap yaitu: define (pendefinisian), design (perancangan), (pengembangan) disseminate (penyebaran). suatu proses mengembangkan memvalidasi produk 2019). Sedangkan menurut Hasil Pengembangan Media Pembelajaran Dijelaskan materi geogebra, rencana pelaksanaan buku guru lembar kerja kelompok instrumen tes konsep, angket disposisi matematis. Bahwa dari siswa, tidak tuntas tingkat ketuntasan Untuk lebih termotivasi, memiliki dalam, baik. Lembar formulir reaksi pengembangan, draf pembelajaran, karya Kuesioner pengetahuan juga diberikan di atas panggung. Setelah produksi penilaian bahan ajar selesai, validator akan melanjutkan evaluasi penggunaan instruksi, matematika, instrumentasi sebelumnya dihentikan. Angket jawaban seperti digunakan menilai terhadap topik pada interval 2,5–M–3,5 kategori valid.Kata Kunci: Learning, Pemahaman Konsep Matematis