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Sehatta Saragih

Dosen Pendidikan Matematika FKIP Universitas Riau

Author-ID : 3304716

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Media Pembelajaran Berbasis Komputer Model Tutorial Interaktif untuk Memfasilitasi Kemampuan Pemecahan Masalah Matematis Siswa Siahaan, Paulina; Heleni, Susda; Saragih, Sehatta
Juring (Journal for Research in Mathematics Learning) Vol 6, No 4 (2023)
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/juring.v6i4.24103

Mengikuti perkembangan teknologi, maka guru perlu mengembangkan media pembelajaran yang memanfaatkan teknologi seperti komputer, dimana media pembelajaran merupakan salah satu faktor ketercapaian tujuan pembelajaran. Penelitian ini bertujuan untuk mengembangkan media pembelajaran berbasis komputer model interaktif yang valid dan praktis. Media pembelajaran dikembangkan untuk materi penyajian data kelas VII SMP bertujuan untuk memfasilitasi kemampuan pemecahan masalah matematis siswa. Penelitian ini merupakan penelitian pengembangan mengikuti model pengembangan Borg and Gall. Kevalidan media ditentukan oleh hasil angket yang dinilai oleh 3 orang validator dan kepraktisan dilihat dari respon siswa. Hasil penelitian dan analisis data menunjukkan bahwa media pembelajaran berbasis komputer model interaktif valid dan praktis. Namun, penelitian ini perlu dilanjutkan dengan uji coba penggunaannya untuk melihat efektivitasnya terhadap kemampuan pemecahan masalah matematis siswa. Guru dapat menggunakan media pembelajaran berbasis komputer model interaktif ini untuk menunjang pembelajaran materi penyajian data. Namun guru perlu meninjau terlebih dahulu ketersediaan komputer dan listrik di sekolah.

Penerapan model problem-based learning untuk meningkatkan hasil belajar matematika peserta didik Saputro, Agus; Murni, Atma; Saragih, Sehatta
Jurnal Pendidik Indonesia Vol. 6 No. 2 (2025): Jurnal Pendidik Indonesia
Publisher : Karoteh Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61291/jpi.v6i2.129

This study aims to enhance the quality of the learning process and improve students' mathematics learning outcomes through the implementation of the Problem Based Learning (PBL) model. PBL is an instructional approach that encourages active student engagement in solving contextual problems to build a deeper conceptual understanding. The method used is classroom action research (CAR), with data collected through observation sheets of teacher and student activities, as well as mathematics learning outcome tests. The research subjects were students of class VIII-2 at MTs YPI Kuala Enok, Indragiri Hilir Regency. The results showed that before the implementation, only 20% of students achieved the Minimum Mastery Criteria (MMC). After the first cycle, this percentage increased to 56.66%, and in the second cycle, it rose to 86.66%. This improvement was also accompanied by enhancements in the learning process in each meeting. Thus, the implementation of the PBL model proved to be effective in improving the learning process and enhancing students’ mathematics learning outcomes.

Development Of Learning Based Teaching Materials On Quadratic Function Materials To Improve Students' Mathematical Representation Skills Luthfiani, Ulfa; Saragih, Sehatta; Suanto, Elfis
JTMT: Journal Tadris Matematika Vol 6 No 2 (2025): Volume 6, Issue 2, Desember 2025
Publisher : Universitas Islam Ahmad Dahlan (UIAD)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47435/jtmt.v6i2.4191

This research aims to develop discovery learning-based teaching materials on quadratic functions to improve mathematical representation abilities of grade X students. The low mathematical representation ability of Indonesian students reflected in TIMSS 2015 results is the research background. Research and Development (R&D) methodology with a 4D model (Define, Design, Develop, Disseminate) was used to develop the learning product. Validation was conducted by three mathematics education experts, practicality testing through student response questionnaires, and effectiveness was measured using a Post-test Only Control Group design comparing experimental and control classes. The findings showed very high validity at 91.54%, practicality reached 79.31% in the practical category, and significant effectiveness demonstrated through average score increase from 73.27 to 83.20 (sig = 0.000 < 0.05). The Z proportion test yielded 1.8974 > 1.645, indicating more than 75% of students achieved the minimum mastery standard. This teaching material successfully facilitates mathematical representation skill development through structured discovery activities, although visual representation aspects need further optimization. The discovery learning approach effectively optimizes students' knowledge construction through meaningful learning experiences while overcoming conventional learning limitations in developing mathematical representation competencies

Pengembangan Modul Ajar Konten Proporsi Berbasis PBL untuk Memfasilitasi Kemampuan Pemecahan Masalah Matematis Siswa Fase D Indra, Afifah Reghina; Saragih, Sehatta; Sakur, Sakur
Polinomial : Jurnal Pendidikan Matematika Vol. 5 No. 1 (2026)
Publisher : Papanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56916/jp.v5i1.3006

This study aimed to develop a mathematics instructional module based on Problem-Based Learning (PBL) on proportion content to facilitate the mathematical problem-solving skills (MPSS) of Phase D students. The research method employed was Research and Development (R&D) using the ADDIE model, which consists of Analysis, Design, Development, Implementation, and Evaluation stages. The research instruments included an instructional module validation sheet and response questionnaires for teachers and students. The validity of the module was evaluated in terms of face, content, and construct validity, while its practicality was assessed based on ease of use, material presentation, and visual appearance. Data were analyzed using quantitative and qualitative approaches. The results indicated that the developed instructional module met the criteria of very high validity, with an average validation score of 93.09, and was highly practical based on teacher and student responses, achieving a practicality score of 92.74. In conclusion, the PBL-based instructional module on proportion content is feasible for facilitating the mathematical problem-solving skills of Phase D students.

Pengembangan Instrumen Tes Higher Order Thinking Skills (HOTS) Konten Perbandingan untuk Siswa Fase D Nabilah, Ulfa; Armis, Armis; Saragih, Sehatta
Polinomial : Jurnal Pendidikan Matematika Vol. 5 No. 1 (2026)
Publisher : Papanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56916/jp.v5i1.3088

Higher Order Thinking Skills (HOTS) are essential competencies that students must possess. Many students still exhibit low levels of HOTS. This study aims to develop a Higher Order Thinking Skills (HOTS) instrument in comparison content for Phase D students. The research employed a development studies model consisting of two main stages: the preliminary stage and formative evaluation. The formative evaluation stage comprised several steps, including self-evaluation, expert review, one-to-one, small group, and field testing. The research subjects involved 30 Phase D students. Data were collected through validation sheets, student readability questionnaires, and HOTS test results, which were analyzed using Anates Uraian 4.0.5 software. The results indicated that the ten HOTS items developed met both rational and empirical validity criteria, showed very high reliability (0.95), had varying levels of difficulty (two easy, six moderate, and two difficult items), and demonstrated good discriminating power. Therefore, the developed HOTS instrument on comparison content is considered feasible to be used as an evaluation tool to enhance students’ critical, analytical, and creative thinking skills.

Penerapan Model Problem Based Learning pada Materi Kekongruenan dan Kesebangunan untuk Meningkatkan Kemampuan Komunikasi Matematis Siswa SMP Manalu, Agatha Friendsi; Murni, Atma; Saragih, Sehatta
Polinomial : Jurnal Pendidikan Matematika Vol. 5 No. 1 (2026)
Publisher : Papanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56916/jp.v5i1.3605

This study aims to improve the mathematical communication skills of students in class IX-6 at SMP Negeri 3 Mandau through the implementation of the Problem Based Learning model on the topics of congruence and similarity. Based on interviews and observations, it was found that students faced difficulties in understanding problems, explaining mathematical ideas, and presenting mathematical models. This classroom action research was conducted in two cycles, with each cycle consisting of planning, implementation, observation, and reflection. The data collected included qualitative and quantitative data, which were analyzed to evaluate the improvement in students' mathematical communication skills. The results of the study indicate that the implementation of the Problem Based Learning model successfully enhanced student engagement and mathematical communication skills. The average KKM score of students increased from 31 in the initial test to 63 in cycle I, and reached 90 in cycle II. This improvement demonstrates that the Problem Based Learning model is effective in enhancing the learning process and improving students mathematical communication skills. Therefore, it can be concluded that the application of the Problem Based Learning model on the topics of congruence and similarity can enhance the quality of mathematics education in class IX-6 at SMP Negeri 3 Mandau.

Implementasi Model Pembelajaran Creative Problem Solving untuk Meningkatkan Hasil Belajar Matematika Murid Fase D Dwi Nyarianti; Armis Armis; Sehatta Saragih
Polinomial : Jurnal Pendidikan Matematika Vol. 5 No. 2 (2026)
Publisher : Papanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56916/jp.v5i2.3754

Penelitian ini merupakan Penelitian Tindakan Kelas (PTK) yang bertujuan untuk mengetahui efektivitas penerapan model pembelajaran Creative Problem Solving (CPS) dalam memperbaiki proses pembelajaran dan hasil belajar matematika murid Fase D SMP Negeri 1 Siak Kecil pada materi Teorema Pythagoras. Subjek penelitian berjumlah 31 murid dengan kemampuan akademik yang beragam. Data penelitian diperoleh melalui tes hasil belajar, lembar observasiA aktivitas guru dan murid, serta perangkat pembelajaran berupa Alur Tujuan Pembelajaran (ATP), modul ajar, dan Lembar Kerja Murid (LKM). Data yang diperoleh dianalisis secara deskriptif kualitatif dan deskriptif kuantitatif. Hasil penelitian menunjukkan bahwa Kriteria Ketercapaian Tujuan Pembelajaran (KKTP) pada kondisi awal sebesar 22,58%, kemudian meningkat menjadi 51,61% pada Siklus I dan mencapai 74,19% pada Siklus II setelah penerapan model CPS. Peningkatan tersebut menunjukkan bahwa model CPS mampu memperbaiki proses pembelajaran sekaligus meningkatkan hasil belajar matematika murid secara signifikan.

PENERAPAN PROBLEM BASED LEARNING UNTUK MENINGKATKAN KEMAMPUAN REPRESENTASI MATEMATIS SISWA SMA Karina Azzahra Maulani; Sehatta Saragih; Armis Armis
SIGMA: JURNAL PENDIDIKAN MATEMATIKA Vol. 17 No. 2: Desember 2025
Publisher : Universitas Muhammadiyah Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26618/sigma.v17i2.18685

Kemampuan representasi matematis (KRM) memiliki peran krusial dalam pembelajaran matematika, namun berbagai hasil studi menunjukkan bahwa capaian siswa di bidang ini tergolong rendah. Penelitian ini bertujuan meningkatkan KRM melalui penggunaan model Problem Based Learning (PBL) dengan topik Statistika. Penelitian dilakukan pada 40 siswa XD SMA Negeri 15 Pekanbaru tahun ajaran 2024/2025. Penelitian menerapkan desain Penelitian Tindakan Kelas (PTK) dan dilaksanakan dalam dua siklus berurutan. Di setiap siklus, kegiatan mencakup perencanaan, pelaksanaan tindakan, pengamatan, serta refleksi terhadap hasil tindakan. Data dikumpulkan melalui dua tes KRM berbentuk uraian berdasarkan indikator representasi visual, simbolik, dan verbal, serta melalui lembar pengamatan aktivitas guru dan siswa. Data penelitian menunjukkan peningkatan skor rata-rata KRM siswa dari 26,65 pada tes awal, naik menjadi 46,87 pada siklus I, dan mencapai 84,2 pada siklus II. Hasil tersebut menunjukkan implementasi PBL berkontribusi positif terhadap perbaikan proses pembelajaran serta peningkatan KRM siswa kelas XD SMA Negeri 15 Pekanbaru pada topik Statistika semester genap tahun ajaran 2024/2025.

IMPLEMENTASI PROBLEM BASED LEARNING UNTUK MENINGKATKAN KECAKAPAN KOMUNIKASI MATEMATIS PADA KONTEN PELUANG Ezra Glory Manalu; Sehatta Saragih; Armis Armis
SIGMA: JURNAL PENDIDIKAN MATEMATIKA Vol. 17 No. 2: Desember 2025
Publisher : Universitas Muhammadiyah Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26618/sigma.v17i2.18686

Kecakapan komunikasi matematis (KKM) menjadi unsur krusial dalam menunjang keberhasilan dalam pembelajaran matematika, tetapi temuan dari hasil wawancara, observasi, dan tes awal memperlihatkan bahwa KKM peserta didik kelas XA SMAN 15 Pekanbaru masih sangat rendah. Penelitian ini bertujuan meningkatkan KKM melalui penggunaan model Problem Based Learning (PBL) pada konten Peluang. Penelitian ini tergolong Penelitian Tindakan Kelas (PTK) yang diimplementasikan selama dua periode dengan melibatkan 41 peserta didik kelas XA SMAN 15 Pekanbaru tahun akademik 2024/2025. Masing-masing periode mencakup aktivitas perencanaan, pelaksanaan tindakan, pengamatan, dan refleksi. Alat penelitian mencakup perangkat pembelajaran, eksemplar pengamatan aktivitas guru dan peserta didik, serta ujian KKM. Perolehan penelitian menunjukkan bahwa rata-rata skor KKM meningkat dari 27,44 (tes awal) menjadi 51,33 (KKM I) dan 80,10 (KKM II). Secara keseluruhan, penggunaan pembelajaran berbasis masalah dapat mereparasi aktivitas pembelajaran dan menguatkan KKM peserta didik kelas XA SMAN 15 Pekanbaru tahun akademik 2024/2025 pada konten Peluang.

PENGEMBANGAN MODUL AJAR BERBASIS PROBLEM BASED LEARNING UNTUK MEMFASILITASI KEMAMPUAN PEMECAHAN MASALAH MATEMATIS SISWA Rossanti; Sehatta Saragih; Syarifah Nur Siregar
SIGMA: JURNAL PENDIDIKAN MATEMATIKA Vol. 18 No. 1: Juni 2026
Publisher : Universitas Muhammadiyah Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26618/3gav5k16

Tujuan Penelitian: Penelitian ini bertujuan untuk menghasilkan modul ajar berbasis Problem Based Learning (PBL) yang valid dan praktis untuk memfasilitasi KPMM siswa fase D pada materi bangun ruang sisi lengkung. Metode Penelitian: Penelitian ini menggunakan metode Research and Development (R&D) dengan model pengembangan 4D (Define, Design, Develop, Disseminate). Instrumen penelitian yang digunakan meliputi lembar validasi ahli dan angket respons siswa. Pengumpulan data dilakukan melalui validasi oleh tiga orang validator serta uji coba terbatas kepada 12 siswa kelas IX SMP Negeri 7 Tualang. Data yang diperoleh dianalisis secara kuantitatif menggunakan skala Likert untuk menentukan tingkat kevalidan dan kepraktisan produk yang dikembangkan. Hasil Penelitian: Hasil penelitian menunjukkan bahwa modul ajar yang dikembangkan memperoleh rata-rata nilai validitas sebesar 93,43% dengan kategori sangat valid. Selain itu, hasil angket respons siswa pada uji coba kelompok kecil menunjukkan rata-rata nilai kepraktisan sebesar 88,65% dengan kategori sangat praktis. Kontribusi: Berdasarkan hasil tersebut, modul ajar berbasis PBL yang dikembangkan telah memenuhi kriteria valid dan praktis, sehingga layak digunakan sebagai salah satu alternatif perangkat pembelajaran untuk memfasilitasi kemampuan pemecahan masalah matematis siswa pada materi bangun ruang sisi lengkung.

Co-Authors ', Armis ', Asmarita ', Sudarmono ', Suhermi ', Syofni ', Zuhri D Ade Suci Ramadhani Adityawarman Hidayat Afriyanti, Nadya Aini, Zahratul Ainul Hikmah Ainul Mardiah Alfajri, Hadiyanta Alfajri, Hadiyanta Ali, Elsiska Ningsi Ali, Rini Hardiyanti Andri Saputra Angraini, Rini Dian Arisman Adnan Armis Armis Armis Armis Armis Arus Ginanjar Arus Ginanjar Atma Murni Atma Murni Chintya, Cici Ayu Cici Ayu Chintya Desi Kurnia Wati Dhea Ika Putri Dwi Nyarianti Dwinda, Tasya Syafa Eka Hayu Elfis Suanto Elmawati Elmawati Elsya Suharnita EMELIA EMELIA Enno Triandini Eva Novita Nurhasanah Ezra Glory Manalu Farida Farida Fikri, Yomaysha Jasmia Fitri Novriyeni Ginanjar, Arus Hardy, Nabilla Hasanah, Rizatul Herni Purnamawati Hesty Marwani Siregar Indah Fitriani Indra, Afifah Reghina Irma Sari Juliana Purba Karina Azzahra Maulani Karisma, Romi KARTINI Kartini Kartini Kartini Kartini, Kartini Khusnal Marzuqo Laylatul Rahmi, Laylatul Luthfiani, Ulfa Maimunah Manalu, Agatha Friendsi Maruli, Fitryani Meldawati Rahman Morri Manik Muhammad Abdi Muliyana, Dewi Nabilah, Ulfa Nadia Nadia Nadia Nadia Nahor Murani Hutapea Nelli Susanti Noveli, Sonya Nurawan Lubis Nurjannah, Ike Nurul Fitria Oktaviani, Nona Payasto, Eko Prayulia Trisandi, Yogi Puji Karunia, Puji Putri Madhavia Putri Yuanita Rahayu Rahayu Ratih Mauliandri Ravina Faradilla Syahril Reny Reski Reny Reski Reny Resmi Rianti Resti Oktazatika Rianti, Resmi Rini Dian Anggraini Rini Hardiyanti Ali Robbiati, Robbiati Rossanti RR. Ella Evrita Hestiandari Sakur Sakur Sakur, Sakur Sandy, Aulia Saputra, Andespa Saputra, Andespa SAPUTRO, AGUS Seftia Wulan Dari Setiani, Nining Siahaan, Paulina Suci Andriani Suharnita, Elsya Suhermi, Suhermi Suhermi, Suhermi Suhermi, Zuhri D Suraji Suraji suraji suraji Suraji Suraji Susanti, Putri Aulia Susda Heleni Swasto, Widya Syamsul Arifin Syarifah Nur Siregar Syofni Syofni Syofni Syofni Syofni, Syofni Tasya Ananda Titi Solfitri Triandini, Bella Wati, Desi Kurnia Wigbertus Ngabu Yanti Yanti Yenita Roza Yurrahma, Arretta Yusa Putra Yusa Putra Zulkarnain Zulkarnain Zulkarnain Zulkarnain Zulkarnain Zulkarnain Zulkarnain Zulkarnain

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