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All Journal AdMathEdu : Jurnal Ilmiah Pendidikan Matematika, Ilmu Matematika dan Matematika Terapan PYTHAGORAS: Jurnal Program Studi Pendidikan Matematika Jurnal Pendidikan Biologi Jurnal Pendidikan Matematika Raflesia Indiktika : Jurnal Inovasi Pendidikan Matematika Jurnal Pendidikan Matematika (JUDIKA EDUCATION) JE (Journal of Empowerment) JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Community Development Journal: Jurnal Pengabdian Masyarakat SIMBIOSA Jurnal Math-UMB.EDU FARABI: Jurnal Matematika dan Pendidikan Matematika Kognitif: Jurnal Riset HOTS Pendidikan Matematika Journal of Natural Sciences JIMAKUKERTA Journal of Mathematics Instruction, Social Research and Opinion Journal of Artificial Intelligence and Digital Business Indonesian Journal of Innovation Multidisipliner Research Aktual : Jurnal Pengabdian Kepada Masyarakat Unnes Journal of Mathematics Education International Journal of Educational Research Indonesian Journal of Innovation Multidisipliner Research
Kashardi, Kashardi
Universitas Muhammadiyah Bengkulu
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Public Health Social Sciences Other

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Ethnomathematics Mencak at Traditional Wedding Ceremonies in Seluma Regency Sari, Lorenza Puspita; Ariani, Nyayu Masyita; Kashardi, Kashardi
Kognitif: Jurnal Riset HOTS Pendidikan Matematika Vol. 6 No. 1 (2026): January - March 2026
Publisher : Education and Talent Development Center Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/kognitif.v6i1.3562

Abstract

Mathematics not only developed as an abstract science, but it was also present and rooted in the cultural practices of society. One form of this linkage can be studied through an ethnomathematical approach, which plays an important role in the preservation of local culture as well as the development of cultural-context-based mathematics learning. This research aims to identify and describe the ethnomathematical concepts contained in the mencak tradition as the cultural heritage of the community. This research uses a qualitative method with research subjects consisting of traditional leaders and practitioners of the mencak tradition who understand the process and meaning of the implementation of the tradition. Data was obtained through observation, in-depth interviews, and documentation, then analyzed using Miles and Huberman's interactive analysis model which included data reduction, data presentation, and conclusion drawn. The results of the study show that in the movements and formations in the mencak tradition there are mathematical concepts in the form of taper angles, right angles, blunt angles, straight angles, and reflex angles. These concepts arise from the position of the body, the direction of movement, and the patterns of interaction between traditional actors, which reflect mathematical understanding that is naturally integrated in cultural practice. These findings show that the mencak tradition has potential as a source of ethnomathematics-based mathematics learning.
Model Problem Based Learning (PBL) dan Project Based Learning (PjBL) terhadap Kemampuan Berpikir Kritis Siswa pada Pembelajaran IPA Kelas VII Astuti, Asmi; Kashardi, Kashardi; Hartati, Merri Sri
Journal of Natural Sciences Vol 7, No 1 (2026): Journal of Natural Sciences Maret
Publisher : Mahesa Research Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34007/jonas.v7i1.1135

Abstract

Critical thinking ability is one of the important competencies that need to be developed in science learning. However, learning that is still dominated by conventional methods causes students' critical thinking abilities to not develop optimally. This study aims to determine the differences in the effects of Problem Based Learning (PBL), Project Based Learning (PjBL), and conventional models on students' critical thinking abilities in science learning for grade VII at SMP Negeri 01 Lebong. This study is a quasi-experimental study with a Pre-Test Post-Test Control Group Design. The research sample was taken using a simple random sampling technique consisting of two experimental classes using the PBL and PjBL models and one control class using the conventional model. Data collection was carried out using an essay test to measure students' critical thinking abilities. Data were analyzed using the One Way ANOVA test. The results of the study showed a significant difference in students' critical thinking abilities in the three treatment classes. The Project Based Learning (PjBL) model was proven to be more effective in improving students' critical thinking abilities compared to the PBL and conventional models.
Co-Authors Adriadi, Rekho Ali Syahbana Aminuyati Andik Purwanto Aroma, Nellys Asmara, Adi Astuti, Asmi B, Andre Nofriady Bella Nandita Christiana , Yona Dahliah, Jeli Desiningsih, Rina Dewi Kurnia Dwi Ismawati Edwar, Yoni Elmiana, Lisa Eriyanto, Eriyanto Fauzan . Firmansyah, Hendri Fuadi, Diyoba Azhar Hadi, Janes Kurnia Hamida, Elis Harahap, Mardhatillah Hafidzah Hartati, Merri Sri Haryana, Lia Heri, Septen Hutauruk, Lenni Mantili Idham Kamil Isnaeni Rofiah Istiana, Farika Iswandi, Wedi Junita, Shinta Kristian, Deddi Latifah, Haniyatul Lestari, Teri Lisa Elmiana M. Yogi Riyantama Isjoni Mahali, Jalaluddin Mantili, Lenni Mardiah Syofiana Marleni, Linna Masri Masri Masri Masri Medriati, Rosane Neti Kesumawati, Neti Ningrum, Tri Rahayu Setya Novita Sari Novita Sari Nyayu Masyita Ariani Oktara, Yogi Rizki Oktavia, Fina Olivia Faradila Pardini, Aan Soka Poppy Lariski Putri , Desy Hanisa RACHMAT HIDAYAT Rahayu, Irmaning Rahma, Isni Dwi Rahmadania, Rianti Rahmat Jumri Rhomadoni, Indra Nur Rika Handayani Rina Desiningsih Risnanosanti Risnanosanti Ristontowi, Ristontowi Riwayati, Selvi Rizky Oka Sasmaya Sari, Lorenza Puspita Sasmaya, Rizky Oka Shinta Junita Siswanto, Rangga Soeviatulfitri Soeviatulfitri Sugirad, Anang Erma Dona Sularni, Sularni Susanti, Mustika Indah Baitul Syahbana, Ali Syahfitri, Jayanti Syofiana, Mardiah Utomo, Wahyu Setyo Wibowo, Ari Isnu Winda Ramadianti, Winda Yolanda, Helpa Yossi Novita Yudisman, Afrien Yuriska Destania Zachriwan Zachriwan Zachriwan, Zachriwan