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Sumardi, Hari

Pendidikan Matematika, Universitas Bengkulu

Author-ID : 3040300

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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PENGARUH MODEL CORE (CONNECTING, ORGANIZING, REFLECTING, EXTENDING) TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIS SISWA KELAS VIII Apriyanti, Peni; Sumardi, Hari; Hanifah, Hanifah
JP2M (Jurnal Pendidikan dan Pembelajaran Matematika) Vol 11, No 1 (2025)
Publisher : Universitas Bhinneka PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29100/jp2m.v11i1.7091

Mathematical problem-solving skills are competencies required by students to face challenges both in academic settings and real-life situations. However, based on observations, these skills are still considered low, including at SMPIT Rabbani in Bengkulu City. The research was conducted to examine the effect of implementing the CORE model on the mathematical problem-solving abilities of eighth-grade students at SMPIT Rabbani, Bengkulu City, using the topic of linear equations. The research design used is a quasi-experimental design, with an experimental group of 13 students applying the CORE model, and a control group of 13 students applying the conventional method. Data analysis showed a significance value (2-tailed) of 0.048 (0.05) with a Cohen’s d value of 0.85, indicating a significant impact with a large effect size. Finding of the search suggest that students who were taught using the CORE model demonstrated better problem-solving abilities than those taught using the conventional method, thus proving that this model is effective in improving students' mathematical problem-solving skills.

PENGARUH PENERAPAN PENDEKATAN RME TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIS SISWA KELAS VIII SMP Khairani, Melvi; Sumardi, Hari; Muchlis, Effie Efrida
JP2M (Jurnal Pendidikan dan Pembelajaran Matematika) Vol 11, No 1 (2025)
Publisher : Universitas Bhinneka PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29100/jp2m.v11i1.7110

The ability to answer mathematical issues gave pupils the chance to use it to overcome obstacles in everyday life as well as in the fields of mathematics and other sciences. A method known as Realistic Mathematics Education (RME) connected mathematical difficulties to pertinent real-world concerns. The purpose of this study was to ascertain whether the RME approach had an impact on the eighth-grade students at SMP Negeri 03 in Bengkulu City's capacity to solve mathematical problems. A quasi-experimental design with a nonequivalent control group was the study methodology employed. The treatment (X) or learning with the RME approach was applied to the first group, while the other group received conventional learning or no treatment. The sample was chosen using the purposive sampling technique. The study's findings demonstrated that the use of the RME approach affected the students' capacity to solve mathematical problems, as evidenced by a sig. (2-tailed) value of 0.001 significance level (α) = 0.05 based on the independent sample t-test statistical test on the two sample classes. Additionally, the average N-Gain score obtained was 0.40, which was classified as a "moderate" increase in understanding. Thus, it could be concluded that the use of the RME approach had a positive impact on the improvement of students' mathematical problem-solving abilities.

Mathematics literacy task on number pattern using Bengkulu context for junior high school students Susanta, Agus; Sumardi, Hari; Susanto, Edi; Retnawati, Heri
Journal on Mathematics Education Vol. 14 No. 1 (2023): Journal on Mathematics Education
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jme.v14i1.pp85-102

Mathematical literacy has an important role in solving students' real-life problems in supporting literacy skills, teachers can use real contexts as outlined in tasks in-class learning. The Bengkulu context can be used because it is closely related to the environment and students' daily live. This study aims to produce math literacy tasks in the Bengkulu context which are valid and potential impact on student literacy. The research employed a development design with a formative evaluative model using stages of self-evaluation, expert reviews, one-to-one, small group, and field tests. The subjects of the research were students in the eighth grade of a Junior High School in Bengkulu City. Data were collected through questionnaires, documentation, tests, and interviews. This study produced four mathematical literacy tasks with the Bengkulu context that met the criteria of being valid and having a potential impact. Mathematical tasks that are designed with the context can improve students' mathematical literacy activities. The use of tasks with context can be a learning resource that strengthens the introduction of students' local culture.

Development of E-module Using Bengkulu Contexts to Improve Literacy Skills of Junior High School Students Susanta, Agus; Sumardi, Hari; Zulkardi
Mathematics Education Journal Vol. 16 No. 2 (2022): Jurnal Pendidikan Matematika
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

Show Abstract | Download Original | Original Source | Check in Google Scholar

This research aims to produce a valid and practical e-module using the Bengkulu context that potentially affects students' literacy skills to understand the materials of patterns and number sequences. This research employed a research and development method. The development stages refer to Plomp’s five developments: (1) preliminary research, (2) the prototype-making stage, and (3) the assessment stage. The subjects of this research were 24 eighth-graders of SMP Negeri 6 Bengkulu City. The data collection techniques of this research were observation and test. Meanwhile, the research instruments were validation instruments, questionnaires, and literacy test questions. Validity analysis was conducted descriptively and consisted of an analysis of validity, practicality, and literacy test results. The average score of the expert validity is 0.64 and meets the valid criterion. The e- module has a practical category with a score of 3.55, and the requirements are very practical. The e-module has impacted students' literacy skills with an average score of 74.25 or good criteria. Moreover, e-module using Bengkulu context problems can encourage students to improve their mathematical literacy skills.DOI : https://doi.org/10.22342/jpm.16.2.17698.171-186

Pengaruh Model Pembelajaran Project Based Learning Terhadap Kemampuan Literasi Matematis Siswa Di SMA Negeri 6 Kepahiang Ririn Astria; Saleh Haji; Hari Sumardi
RANGE: Jurnal Pendidikan Matematika Vol. 5 No. 1 (2023): RANGE Juli 2023
Publisher : Pendidikan Matematika UNIMOR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jpm.v5i1.4710

Tujuan penelitian ini adalah untuk mengetahui pengaruh model pembelajaran berbasis proyek (PJBL) terhadap kemampuan literasi matematis siswa. Jenis penelitian ini menggunakan metode Quasi Exsperimen. Pengumpulan data dilakukan melalui tes. Analisis data menggunakan uji Ancova. Sampel penelitian terdiri dari siswa SMA Negeri 6 Kepahiang kelas XI IPA 1 dan XI IPA 2. Hasil penelitian menunjukkan bahwa: (1) Kovariat kemampuan awal memiliki pengaruh yang linier terhadap kemampuan literasi matematis siswa sebesar 10,6%, (2) Terdapat pengaruh model penbelajaran berbasis proyek (PJBL) terhadap kemampuan literasi matematis sebesar 52,6%. (3) Ada pencapaian kemampuan literasi siswa kelas XI IPA SMA Negeri 6 Kepahiang yang diajarkan dengan menggunakan model pembelajaran berbasis proyek (PjBL) lebih tinggi dibandingkan kelas diajar dengan menggunakan model pembelajaran konvensional.

Validitas Lembar Kerja Peserta Didik berbasis Penemuan Terbimbing pada Materi Prisma dan Limas bagi Siswa Kelas VIII SMP Negeri 12 Kota Bengkulu AGUSTIN, ELUL DIAN; SUMARDI, HARI; RUSDI, RUSDI
JP2MS Vol 4 No 1 (2020): April
Publisher : Program Studi S1 Pendidikan Matematika FKIP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/jp2ms.4.1.82-91

Penelitian ini bertujuan untuk mengetahui validitas Lembar Kerja Peserta Didik Berbasis Penemuan Terbimbing Pada Materi Prisma dan Limas bagi Siswa Kelas VIII yang memenuhi kriteria valid, baik dari segi bahasa, kontruksi maupun materi. Jenis penelitian ini adalah penelitian pengembangan (research and development) dengan menggunakan model pengembangan ADDIE yang dibatasi hanya tiga tahapan yaitu analyze, design dandevelopment. Penelitian ini dilakukan di SMP Negeri 12 Kota Bengkulu semester genap tahun ajaran 2017/2018.Kevalidan LKPD diujicobakan pada dua orang validator, yaitu dosen pendidikan matematika Universitas Bengkulu dan guru matematika Kelas VIII E SMP Negeri 12 Kota Bengkulu.Instrumen penelitian yang digunakan adalah lembar validasi bahasa, lembar validasi kontruksi dan lembar validasi materi. Hasil penelitian kevalidan lembar kerja peserta didik berbasis penemuan terbimbing pada materi prisma dan limas bagi siswa Kelas VIII SMP Negeri 12 Kota Bengkulu, termasuk dalam kategori valid, yaitu: aspek materi skor rata-ratanya 4,03; aspek kontruksi skor rata-ratanya 4,02 dan bahasa dengan skor rata-ratanya 3,98. Secara keseluruhan uji kevalidan dari ketiga aspek penilaian tersebut mendapat skor rata-rata yaitu 3,97. Jadi, dapat dinyatakan bahwa pengembangan LKPD berbasis penemuan terbimbing pada materi prisma dan limas telah memenuhi kriteria valid.

Analisis Hambatan Kemampuan Pemecahan Masalah Siswa SMP pada Materi Aljabar dengan Konteks Budaya Bengkulu Fauzi, Fentiriani; Muchlis, Effie Efrida; Sumardi, Hari
Indiktika : Jurnal Inovasi Pendidikan Matematika Vol. 7 No. 2 (2025): Indiktika : Jurnal Inovasi Pendidikan Matematika
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/indiktika.v7i2.17313

Matematika adalah mata pelajaran wajib yang mengasah kemampuan siswa untuk menyelesaikan berbagai persoalan, tetapi banyak siswa menghadapi kesulitan, terutama pada topik Aljabar. Penelitian ini bertujuan mengidentifikasi kendala yang menyebabkan siswa mengalami kesulitan dalam kemampuan pemecahan masalah saat proses menyelesaikan soal Aljabar. Dengan pendekatan deskriptif kualitatif, data dikumpulkan melalui tes dengan memberikan empat soal esai berbasis konteks budaya Bengkulu kepada siswa kelas VIII E. Hasil penelitian menunjukkan bahwa siswa kesulitan dalam menuliskan perencaaan penyelesaian, siswa kesulitan mentransformasikan informasi pada soal ke dalam bentuk Aljabar, dan siswa kesulitan dalam melakukan proses memeriksa kembali jawaban, tetapi pemberian soal berbasis budaya ini membantu siswa lebih memahami masalah yang ada pada soal.

PENGARUH PROBLEM BASED LEARNING DAN DISPOSISI MATEMATIS TERHADAP PEMAHAMAN KONSEP MATEMATIKA Anggraini, Dewita; Sumardi, Hari; Hanifah, Hanifah
MES: Journal of Mathematics Education and Science Vol 10, No 2 (2025): Edisi April
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v10i2.11155

Penelitian ini bertujuan untuk mengetahui pengaruh model PBL dan disposisi matematis terhadap pemahaman konsep matematika. Jenis penelitian yang digunakan adalah eksperimen semu. Dalam penelitian ini, dua kelas sampel diterapkan, yaitu kelas eksperimen yang menggunakan model problem based learning dan kelas kontrol yang menggunakan pembelajaran konvensional. Desain penelitian yang digunakan adalah Faktorial Eksperimental. Teknik pengumpulan data yang digunakan mencakup tes (soal uraian) dan non-tes (angket disposisi matematis). Untuk analisis data, digunakan teknik ANOVA Dua Jalan (Two-way ANOVA). Hasil dari penelitian ini adalah 1) Terdapat perbedaan kemampuan pemahaman konsep matematika peserta didik yang belajar menggunakan model problem based learning dengan peserta didik yang belajar menggunakan model pembelajaran konvensional. 2) Terdapat perbedaan kemampuan pemahaman konsep matematika peserta didik antara peserta didik yang memiliki disposisi tinggi dengan peserta didik disposisi rendah. 3) Terdapat interaksi antara Model Problem Based Learning dan Disposisi Matematis terhadap Pemahaman Konsep Matematika

THE EFFECT OF THE NUMBERED HEAD TOGETHER (NHT) COOPERATIVE LEARNING MODEL ON THE MATHEMATICS LEARNING OUTCOMES OF GRADE IX STUDENTS OF SMP NEGERI 6 BENGKULU CITY Kusuma, Helti Puji; Susanta, Agus; Sumardi, Hari
Tesseract: International Journal of Geometry and Applied Mathematics Vol. 2 No. 1 (2024): Tesseract: International Journal of Geometry and Applied Mathematics
Publisher : Nindikayla Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57254/tess.v2i1.28

This study aims to see whether there is or not the effect of the cooperative numbered head together learning model on the mathematics learning outcomes 9th grade students of SMPN 6 Bengkulu City. The type of research was a quasi-experimental design with The Nonequivalent Pretest-Posttest Control group design. The population in this study were all students of class IX SMPN 6 Bengkulu City. The sample selection used simple random sampling technique, the sample in this study was class IX A which consisted of 25 students as the experimental class and class IX B which consisted of 25 students as the control class. Data collection was carried out using questions pretest and posttest. The results of the hypothesis test showed the sig (2- tailed) value is 0.000 < α = 0.005, with an average student posttest score experiment class of 75,88 and an average student posttest score control class of 58,84. It can be concluded that there is a significant influence of the cooperative Numbered Head Together learning model on the mathematics learning outcomes 9th grade students of SMPN 6 Bengkulu City.

PENGARUH KECERDASAN EMOSIONAL TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIS PESERTA DIDIK KELAS VII SMP Sakti, Intan Tiara; Zamzaili, Zamzaili; Siagian, Teddy Alfra; Sumardi, Hari; Irsal, Nur Aliyyah; Utari, Tria
JP2MS Vol 7 No 3 (2023): Desember
Publisher : Program Studi S1 Pendidikan Matematika FKIP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/jp2ms.7.3.427-440

Penelitian ini bertujuan untuk mengetahui pengaruh kecerdasan emosional terhadap kemampuan pemecahan masalah matematis peserta didik. Jenis penelitian ini adalah penelitian ex post facto. Populasi dalam penelitian ini adalah seluruh peserta didik kelas VII SMP negeri 7 Kota Bengkulu tahun ajaran 2022/2023. Sampel dalam penelitian ini adalah peserta didik kelas VII C dan VII E dengan jumlah 39 orang yang dipilih dengan teknik purposive sampling. Teknik pengumpulan data dalam penelitian ini adalah teknik tes dan non tes dengan instrumen lembar angket dan tes soal. Uji hipotesis yang digunakan dalam penelitian ini adalah uji analisis kovarian. Hasil dari pengujian hipotesis diperoleh nilai sehingga dapat disimpulkan bahwa terdapat pengaruh kecerdasan emosional terhadap kemampuan pemecahan masalah matematis peserta didik.

Co-Authors Abdul Rahman Singkam Abdurrobbil Falaq Dwi Anggoro Afnaria, Afnaria Agung Setia Budi Agus Susanta Agus Susanta AGUSTIN, ELUL DIAN Aliya Monika Br Ginting Andriany Ussandi Anggraini, Dewita Annisa Al Karimah Apriyanti, Peni Astria, Ririn Athiyyah Nur Herlita Audaya, Robiatul Bellatama, Lisa Gustiana 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 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 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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