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Sumardi, Hari

Pendidikan Matematika, Universitas Bengkulu

Author-ID : 3040300

Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Health Professions Languange, Linguistic, Communication & Media Mathematics Physics Public Health Social Sciences Other

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Validity and Practicality Testing of a Problem-Based Learning Teaching Module Integrated with Wordwall on the Topic of Similarity : Validity and Practicality Testing of a Problem-Based Learning Teaching Module Integrated with Wordwall on the Topic of Similarity Bellatama, Lisa Gustiana; Sumardi, Hari; Muchlis, Effie Muchlis; Hanifah
Journal Evaluation in Education (JEE) Vol 6 No 4 (2025): October
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/jee.v6i4.2191

This study aims to test the validity and practicality of the Problem Based Learning (PBL)-based teaching module integrated with the Wordwall application on similarity material. The method used is the development of Plomp consisting of 5 stages, namely Preliminary investigation, design, relation/construction, test, evaluation and revision and Implementation. With the validation sheet as the main instrument and a feasibility score of 89.83% with the category "Very Valid" and the practicality questionnaire from the overall student responses obtained a percentage score of 88.5% with the category "Very Practical". Based on the results developed by the researcher entitled Validity Test and Practicality Test of Problem Based Learning-Based Teaching Modules and Integrated Wordwall on Similarity Material, it is concluded that the Problem Based Learning-based LKPD that has been developed has met the criteria of being very valid and very practical. These findings support the effectiveness of the PBL approach and the integration of digital media such as Wordwall in improving the quality of mathematics learning.

Pengaruh Penerapan Model Project Based Learning Terhadap Kemampuan Pemecahan Masalah Matematika Siswa Febrila, Lilia Gina; Hanifah; Sumardi, Hari; Haji, Saleh
Jurnal Pendidikan Matematika Vol. 14 No. 2 (2023): July 2023
Publisher : Jurusan Pendidikan Matematika FKIP Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36709/jpm.v14i2.82

Penelitian ini bertujuan untuk mengetahui pengaruh penerapan model Project Based Learning (PjBL) terhadap kemampuan pemecahan masalah matematika. Jenis penelitian ini adalah penelitian eksperimen semu. Populasi dalam penelitian ini adalah seluruh siswa kelas VIII SMP Negeri 1 Bengkulu Utara tahun ajaran 2022/2023 yang berjumlah 288 siswa dan sampel penelitian yaitu kelas VIII E dan VIII H yang berjumlah 64 siswa. Instrumen penelitian ini adalah tes kemampuan pemecahan masalah matematika. Analisis data dilakukan dengan uji analysis of covariance (ANACOVA). Hasil penelitian menunjukkan bahwa: (1) terdapat pengaruh linear kovariat kemampuan awal terhadap kemampuan pemecahan masalah siswa sebesar 60,4%. (2) terdapat pengaruh penerapan model pembelajaran Project Based Learning terhadap kemampuan pemecahan masalah siswa dengan mengontrol kemampuan awal siswa sebesar 33,3%. (3) pencapaian kemampuan pemecahan masalah siswa di kelas yang diajar menggunakan model pembelajaran Project Based Learning lebih tinggi dibandingkan kelas yang diajarkan dengan model pembelajaran ekspositori.

Algoritma Keprimitifan Dari Suatu Digraph Fathoni, Muhammad; Sumardi, Hari
Jurnal Warta Dharmawangsa Vol 18, No 3 (2024)
Publisher : Universitas Dharmawangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46576/wdw.v18i3.4743

PELATIHAN PENGEMBANGAN E-LKPD BERBASIS DISCOVERY LEARNING MENGGUNAKAN EDFORM UNTUK OPTIMALISASI KEMAMPUAN PEMECAHAN MASALAH SISWA SMP Sumardi, Hari; Siagian, Teddy Alfra; Agustinsa, Ringki; Anshori, M. Irfan; Bimansyah, Rahadi; Apriani, Mulya Sarti
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 6 No. 5 (2025): Vol.6 No. 5 Tahun 2025
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v6i5.50750

Masih banyak guru matematika yang mengandalkan metode mengajar konvensional dan terbatasnya pemanfaatan teknologi dalam mengembangkan media pembelajaran, khususnya lembar kerja siswa (LKPD). Salah satu solusi untuk permasalahan ini adalah pelaksanaan pelatihan tentang metode pembelajaran inovatif yang melibatkan siswa secara aktif, serta pelatihan tentang pengembangan media pembelajaran berbasis teknologi. Tujuan dari kegiatan pengabdian kepada masyarakat ini adalah untuk meningkatkan pengetahuan dan keterampilan guru MGMP (Musyawarah Guru Mata Pelajaran) Matematika SMP Kota Bengkulu sebagai mitra dalam merancang lembar kerja elektronik (E-LKPD) berbasis model Discovery Learning menggunakan aplikasi Edform. Metode yang digunakan dalam kegiatan ini meliputi: (1) metode ceramah, yang digunakan untuk menyampaikan konsep-konsep yang terkait dengan lembar kerja elektronik berbantuan Edform dalam pembelajaran matematika; (2) metode demonstrasi, yang digunakan untuk memperlihatkan proses pembuatan media pembelajaran berbantuan Edform; dan (3) metode presentasi, yang digunakan untuk mempresentasikan media pembelajaran berbantuan Edform yang dikembangkan oleh masing-masing kelompok. Hasil kegiatan ini menunjukkan bahwa guru MGMP Matematika Kota Bengkulu mampu membuat E-LKPD menggunakan aplikasi Edform, sehingga mendukung optimalisasi kemampuan pemecahan masalah siswa.

The CORE model: An innovative strategy to strengthen students’ mathematical connections and problem-solving skills in junior high school Apriyanti, Peni; Sumardi, Hari; Hanifah, Hanifah
Alifmatika (Jurnal pendidikan dan pembelajaran Matematika) Vol 7 No 2 (2025): Alifmatika - December
Publisher : Fakultas Tarbiyah Universitas Ibrahimy

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35316/alifmatika.2025.v7i2.332-344

Developing students’ mathematical connection and problem-solving skills remains a persistent challenge in Indonesian secondary mathematics education. This study examined the impact of the CORE (Connecting, Organizing, Reflecting, Extending) instructional model on students’ mathematical connections and problem-solving abilities at SMPN 02 Kota Bengkulu. A quantitative approach with a controlled-comparison design was employed, and data were analyzed using Analysis of Covariance (ANCOVA) to assess the model’s effects while controlling for prior ability. The findings revealed that prior mathematical ability significantly explained 25.3% of the variance in students’ mathematical connection skills and 55.3% of the variance in their problem-solving performance. After implementing the CORE model, students demonstrated substantial improvement in both areas. The model accounted for 57.0% of the variance in mathematical connection ability, particularly enhancing students’ capacity to relate mathematics to other disciplines and real-life contexts, and 19.9% of the variance in problem-solving skills, especially in understanding problems, planning, and reviewing solutions. These results suggest that the CORE model effectively promotes cross-disciplinary integration, contextual understanding, and reflective reasoning in mathematics learning. Theoretically, the findings reinforce the role of constructivist and reflective learning frameworks in strengthening students’ higher-order thinking and meaningful engagement with mathematical concepts.

PENGEMBANGAN LKPD BERBASIS PROBLEM BASED LEARNING (PBL) PADA MATERI STATISTIKA KELAS X SMA Tamsil, Jimmi; Muchlis, Effie Efrida; Hanifah, Hanifah; Sumardi, Hari
AKSIOMA: Jurnal Program Studi Pendidikan Matematika Vol 14, No 4 (2025)
Publisher : UNIVERSITAS MUHAMMADIYAH METRO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/ajpm.v14i4.13580

Peserta didik selama ini menggunakan LKPD yang masih memiliki keterbatasan dalam aspek desain dan tampilan. LKPD tersebut hanya disajikan dalam format hitam putih sehingga kurang menarik secara visual. Selain itu, LKPD tersebut cenderung digunakan secara dominan sebagai satu-satunya bahan ajar, sehingga belum mampu mendukung variasi sumber belajar yang lebih kaya pada pelaksaan pembelajaran. Studi ini difokuskan mengembangkan LKPD berbasis Problem Based Learning pada materi Statistika yang layak digunakan, ditunjukkan melalui tingkat kevalidan dan kepraktisannya, serta memiliki tampilan yang menarik dan berwarna. Riset ini mengadopsi model 4D: mendefinisikan, merancang, mengembangkan, dan menyebarkan. Penelitian ini melibatkan ahli materi, ahli desain, ahli bahasa, serta guru mata pelajaran matematika, serta 9 peserta didik kelas X SMA Negeri 11 Rejang Lebong. Temuan riset mengindikasihkan capaian indeks validitas sebesar dapat dilihat dari aspek kevalidan bahasa (0,94), media (0,85) dan materi (0,92), Berdasarkan angka tersebut, kualitas media pembelajaran dinyatakan memenuhi kriteria Sangat Valid. Secara praktikalitas, produk ini mencatatkan skor 97,1% sehingga dinyatakan masuk dalam kategori Sangat Praktis. LKPD berbasis Problem Based Learning yang dikembangkan telah memenuhi kriteria kevalidan dan kepraktisan. Dengan demikian, disimpulkan bahwa LKPD berbasis Problem Based Learning pada materi Statistika yang dikembangkan dinyatakan valid dan praktis digunakan dalam pembelajaran.

Students' Mathematical Literacy Ability in Solving Problems on Pattern Material Using the Bengkulu Local Contexts Agus Susanta; Hari Sumardi; Edi Susanto
Didaktik Matematika Vol 9, No 2 (2022): OCTOBER 2022
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jdm.v9i2.26741

Mathematical literacy is an important ability for students in Indonesia to face the implementation of minimum competency assessment and learning in the 21st century.This study aims to describe students' mathematical literacy skills in solving problems on pattern material in the Bengkulu local context. This study used a descriptive qualitative design. The research subjects were 30 students grade VIII from five schools in Bengkulu City. Subject selection through purposive sampling technique based on the level of intelligence with the number of each school is six students. Data were collected through interviews and mathematical literacy test using description questions that have been validated and tested. The data analysis consists of data reduction, data presentation, and concluding. The findings of this study are that students with low to moderate knowledge tend to have literacy skills at level 2. In contrast, students in the high knowledge group have literacy skills at level 3. Many students have used mathematical arguments to solve literacy problems but did not use concepts correctly.Students have not used the model structurally at the modeling stage, which resulted in errors in problem-solving and representation. Based on this, teachers need to emphasize the concept of material and mathematical modeling in learning.

Co-Authors Abdul Rahman Singkam Abdurrobbil Falaq Dwi Anggoro Afnaria, Afnaria Agung Setia Budi Agus Susanta Agus Susanta AGUSTIN, ELUL DIAN Agustinsa, Ringki Aliya Monika Br Ginting Andriany Ussandi Anggraini, Dewita Annisa Al Karimah Anshori, M. Irfan Apriani, Mulya Sarti Apriyanti, Peni Astria, Ririn Athiyyah Nur Herlita Audaya, Robiatul Bellatama, Lisa Gustiana Bimansyah, Rahadi Br Ginting, Aliya Monika Desfa Lusiana Dodi Isran Dona Eka Safitriyanti Dwi Agusantia Dwi Putri, Geza Edi Susanto Fatrima Santri Syafri, Fatrima Santri Fauzi, Fentiriani Febrila, Lilia Gina Fentiriani Fauzi Gyzka Veliesa Haji, H Saleh Hanifah Hanifah Hanifah hanifah hanifah Hanifah Hanifah Hanifah Hanifah Hanifah Hanifah Hanifah Hanifah Hanny Nurhikma Prapti Hardini Agustika Herawati, Anisa Heri Retnawati Irsal, Nur Aliyyah Istikomar Istikomar Jesica Angela Fitri Khairani, Melvi Khairul Saleh Khalifah, Shela Mardha Kintan Ayu Septiany Kusuma, Helti Puji Lilia Gina Febrila Lilia Gina Febrila Luluk Lutfiya Miftakhul Janah Khoiriyah Muchlis, Effie Efrida Muchlis, Effie Muchlis Muhammad Fathoni, Muhammad Muhammad Yogi Ramadhan Nida Azizah Nur Aliyyah Irsal Nurliyan Hidayati, Latifa Nurul Astuty Yensi B Rahadi Bimansah Rahma Nia Juita Ridho Agio Nesta Ridwanul Fata Ridwanul Fata Ririn Astria Robiatul Audaya Rusdi Rusdi Sakti, Intan Tiara Siagian, Teddy Alfra Sri Rahmayanti Susanta, Agus Suvriadi Panggabean Tamsil, Jimmi Teddy A Siagian Teddy Alfra Siagian Teddy Alfra Siagian Tria Utari Triyanti, Yeni Utari, Tria Youla Siscasari R Yuni Pusvita Zainal Azis Zamzaili Zamzaili Zamzaili Zamzaili Zamzaili Zamzaili, Zamzaili Zulkardi Zulkardi Zulkardi

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