https://jurnal.stkippgribl.ac.id/index.php/epsilon <p>Epsilon: Jurnal Pendidikan Matematika</p> <p>Jurnal Epsilon diperuntukkan bagi dosen, guru, mahasiswa, dan praktisi pendidikan dalam mempublikasikan karya ilmiah, baik berupa hasil penelitian maupun artikel di bidang pendidikan matematika. Jurnal Epsilon diterbitkan dua kali setahun oleh Program Studi Pendidikan Matematika STKIP PGRI Bandar Lampung dalam bentuk cetak dan online. Setiap naskah yang diterbitkan telah melalui tahap review oleh tim redaksi Program Studi Pendidikan Matematika STKIP PGRI Bandar Lampung bekerjasama dengan mitra bestari.</p> Prodi Pendidikan Matematika, STKIP PGRI Bandar Lampung en-US Epsilon: Jurnal Pendidikan Matematika 2685-2519 https://jurnal.stkippgribl.ac.id/index.php/epsilon/article/view/1249 <p><em>The background to this research and development of student worksheet is mathematics teaching material for 8^th class of Junior High School 33 Bandar Lampung which have not fully facilitated the ability to solve mathematical problem. In this study it was found that the teaching materials used did not fully support the problem-solving abilities of each learning material through scientific activities. The type of research used is Research and Development (R&amp;D) with the Analysis, Design, Development, Implementation, and Evaluation (ADDIE) model. The results of the LKPD validation for media experts obtained a value of 4.69, material validation obtained a value of 4.90 and language validation obtained a value of 4.24, all of which are "Valid" criteria. After using LKPD based on developed Problem Based Learning, learning completeness through tests of students on the ability to solve mathematical problems reached classical completeness of 84,4%. These results state that LKPD based on Problem Based Learning of 8^th class of Junior High School is appropriate for use as teaching materials.</em></p> Annisa Fadila Qinvi Aty Nurdiana Elvandri Yogi Pratama Copyright (c) 2023 Epsilon: Jurnal Pendidikan Matematika 2023-06-30 2023-06-30 5 1 1 11