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Sehatta Saragih

Dosen Pendidikan Matematika FKIP Universitas Riau

Author-ID : 3304716

Religion Agriculture, Biological Sciences & Forestry Humanities Chemistry Computer Science & IT Education Languange, Linguistic, Communication & Media Library & Information Science Mathematics Mechanical Engineering Physics Social Sciences Other

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Analisis Kesalahan Siswa Kelas X Dalam Menyelesaikan Soal Pada Materi Fungsi Kuadrat Menurut Teori Kastolan Luthfiani, Ulfa; Saragih, Sehatta; Suanto, Elfis
Seminar Nasional Hasil Riset dan Pengabdian Vol. 5 (2023): Seminar Nasional Hasil Riset dan Pengabdian (SNHRP) Ke 5 Tahun 2023
Publisher : LPPM Universitas PGRI Adi Buana

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

Penelitian siswa kelas X di SMA Negeri 1 Karimun bertujuan melakukan analisis pada kesalahan pengerjaan siswa mengenai soal fungsi kuadrat. Data metode deskriptif kualitatif dan instrumentnya adalah 3 soal uraian mengenai soal fungsi kuadrat. Data dikumpulkan dengan melakukan tes serta wawancara. Dari hasil data yang telah dianalisis, kesimpulannya adalah siswa melakukan kesalahan konsep, kesalahan procedural, dan kesalahan operasi dalam mengerjakan soal fungsi kuadrat, penyebabnya karena rendahnya kemampuan siswa dalam memahami dan menguasai konsep. Guru harus fokus pada materi yang disampaikan dan memotivasi siswa untuk belajar matematika. Guru juga dapat memakai metode belajar yang aktif dan kreatif kepada iswa agar siswa semakin seneng belajar matematika dan mampu menyelesaikan soal yang diberikan.

ANALYSIS OF TEACHING MATERIAL NEEDS FOR SEQUENCES AND SERIES TO IMPROVE SMA/MA STUDENTS' MATHEMATICAL PROBLEM SOLVING CAPABILITY Muliyana, Dewi; Murni, Atma; Saragih, Sehatta; Roza, Yenita
Jurnal Pendidikan Matematika dan IPA Vol 15, No 2 (2024): May 2024
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jpmipa.v15i2.78121

Teaching materials are one of the supporting components for achieving mathematical problem solving abilities. This research aims to analyze the need for teaching materials regarding sequences and series to improve mathematical problem solving abilities for class at SMAN 15 Pekanbaru. Data collection through interviews and questionnaires uses instruments that contain indicators, namely learning resources, content of teaching materials, and needs for teaching materials. The data analysis used is Miles-Huberman Interactive Analysis, which consists of data condensation, data display and conclusion drawing. The results of this research indicate that the teaching materials used in learning have shortcomings, namely: the teaching materials do not use a certain approach so that the teaching materials cannot improve mathematical problem solving abilities; material is received by memorization; teaching materials are less attractive, not contextual, unclear and difficult to use if there is no teacher explanation; teaching materials cannot make students active; and teaching materials cannot yet be called teaching materials because the constituent components are still lacking. The teacher stated that learning using teaching materials was better than just using textbooks. Based on the results of the research, it is hoped that it can be followed up to overcome students' problems in using teaching materials designed by teachers and developing teaching materials on sequence and series material which can improve students' mathematical problem solving abilities

Analisis Kesalahan Peserta Didik pada Materi Luas Permukaan Bangun Ruang Sisi Datar Berdasarkan Teori Kastolan Suharnita, Elsya; Kartini, Kartini; Saragih, Sehatta
JIPIS Vol. 33 No. 1 (2024): April 2024
Publisher : FKIP, UNIVERSITAS ISLAM SYEKH-YUSUF TANGERANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33592/jipis.v33i1.4581

Hambatan yang dialami peserta didik dalam belajar matematika menyebabkan terjadinya kesalahan saat menyelesaikan soal matematika. Tujuan dari penelitian ini untuk menganalisis kesalahan peserta didik kelas VIII dalam menyelesaikan soal materi luas permukaan bangun ruang sisi datar menggunakan teori kastolan, yang terdiri dari kesalahan konseptual, prosedural, dan teknik. Subjek penelitian ini adalah peserta didik kelas VIII.2 SMP Negeri 14 Pekanbaru tahun ajaran 2022/2023 yang meliputi 18 peserta didik. Penelitian ini menggunakan teknik pengumpulan data tes, non tes, dan wawancara. Tes merupakan soal tentang materi luas permukaan bangun ruang sisi datar, dan non tes merupakan dokumentasi hasil jawaban peserta didik. Wawancara digunakan untuk memperoleh informasi yang lebih akurat mengenai pendapat peserta didik dalam menyelesaikan soal luas permukaan bangun ruang sisi datar. Hasil penelitian menunjukkan bahwa kesalahan tertinggi ada pada indikator menentukan luas permukaan limas. Persentase kesalahan tertinggi terdapat pada kesalahan konseptual. Kesalahan ini disebabkan peserta didik cenderung menghafal rumus, belum dapat membedakan antar bangun ruang sisi datar lainnya, dan peserta didik tidak memahami konsep luas permukaan bangun ruang sisi datar.

Pengembangan LKPD Berbasis Discovery Learning untuk Memfasilitasi Kemampuan Pemahaman Matematis Siswa SMP Pada Materi Himpunan Prayulia Trisandi, Yogi; Kartini; Saragih, Sehatta
Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika Vol. 6 No. 2 (2024): Jurnal Absis
Publisher : Program Studi Pendidikan Matematika Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/absis.v6i2.2321

This research is motivated by the low mathematical comprehension abilities of students. One effort to facilitate mathematical comprehension abilities is by developing teaching materials in the form of Student Worksheets (LKPD) using the discovery learning model. This study aims to produce valid and practical LKPD products to facilitate students' mathematical comprehension abilities. The form of this research is development research using the 4-D model (define, design, develop, and disseminate). The research subjects are 9 seventh-grade students from SMP Yabri Terpadu Pekanbaru. The research instruments consist of interviews, validation sheets, and student response sheets. Data analysis techniques involved analyzing the validation results and student response data. The results of the data analysis showed that the LKPD met the validity criteria with an average percentage of 87.52%, categorized as highly valid, and also met the practicality criteria with an average percentage of 84.19%, categorized as highly practical. Based on the data analysis results, it is concluded that the developed LKPD meets the validity and practicality criteria, thus can be used in mathematics learning.

Pengembangan Modul Ajar Matematika Berbasis Problem Based Learning pada Materi Rasio untuk Memfasilitasi Kemampuan Pemecahan Masalah Matematis Fase D Kelas VII SMP Mardiah, Ainul; Saragih, Sehatta; Murni, Atma
Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika Vol. 6 No. 2 (2024): Jurnal Absis
Publisher : Program Studi Pendidikan Matematika Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/absis.v6i2.2332

This study is essential, given the lack of adequate learning materials for students in developing Mathematical Problem Solving Skills (KPMM) and the skills needed for more optimal results. The research involved 39 students from class VIII.7 at SMP Negeri 8 Pekanbaru during the odd semester of the 2023/2024 academic year. The research methods included a one-to-one test subject consisting of three high-performing students, a small group test subject involving six students with heterogeneous abilities, and a large group test subject also based on heterogeneous abilities. A 4-D approach consisting of define, design, development, and disseminate was used in material development. Data was collected through observation, interviews, and questionnaires. Interviews were conducted to identify the main problems that form the basis for module development, observations to assess the learning process, and questionnaires to obtain feedback from validators and students about the developed product. The study results showed that the learning module designed according to the independent curriculum with ratio content for seventh-grade students in phase D and a problem-based learning model is proven to be valid and practical.

Penerapan Model Problem Based Learning (PBL) untuk Meningkatkan Hasil Belajar Matematika Siswa Kelas VIII1 SMPN 6 Siak Hulu Enno Triandini; Heleni, Susda; Saragih, Sehatta
Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika Vol. 6 No. 2 (2024): Jurnal Absis
Publisher : Program Studi Pendidikan Matematika Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/absis.v6i2.2333

This research is motivated by the low mathematics achievement of the eighth-grade students of SMPN 6 Siak Hulu in the academic year 2023/2024. This study aims to improve the quality of the learning process and mathematics learning outcomes by implementing the Problem-Based Learning (PBL) model. The form of this research is Classroom Action Research, which examines the problems faced and takes action to solve them. The subjects of this research consist of the eighth-grade students of SMPN 6 Siak Hulu in the odd semester of the academic year 2023/2024, comprising 15 male students and 12 female students with diverse abilities. Research instruments involve using syllabi, Lesson Implementation Plans (RPP), and Student Worksheets (LKS) as learning aids. Meanwhile, observation sheets and learning outcome tests are data collection instruments. The results show an improvement in the learning process from the initial score to each cycle, as reflected in students' increased mathematics learning achievement. The improvement in the Minimum Completion Criteria (KKM) results is as follows: in terms of knowledge and skills, it increased from 11 students (40.7%) in cycle I to 14 students (51.8%) in cycle II. It reached 17 students (62.9%) in cycle III. This research concludes that the implementation of the Problem-Based Learning (PBL) model successfully improves the learning process and achieves better mathematics learning outcomes for the eighth-grade students of SMPN 6 Siak Hulu in the academic year 2023/2024, particularly in the topic of System of Linear Equations with Two Variables.

Pengembangan Modul Berbasis Pendekatan Heuristik untuk Meningkatkan Kemampuan Pemecahan Masalah Matematis Siswa Pada Materi Peluang Kelas VIII SMP Setiani, Nining; Saragih, Sehatta; Yuanita, Putri
Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika Vol. 6 No. 2 (2024): Jurnal Absis
Publisher : Program Studi Pendidikan Matematika Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/absis.v6i2.2338

This developmental research is based on the low mathematical problem-solving ability of students. The heuristic approach can be used to guide students in problem-solving, thus the researchers used a heuristic-based module to improve students' mathematical problem-solving skills. The aim of this study is to describe the development process, quality, and effectiveness of the heuristic-based module. The research development, or Research and Development, uses the ADDIE model. The research subjects for module validation were experts in the field of education, while the subjects for practicality and effectiveness were eighth-grade students at SMPN 2 Sabak Auh. Data collection techniques included questionnaires and tests, with qualitative and quantitative data analysis. The feasibility assessment of the module obtained an average percentage of 81.31%, classified as very valid. Students' assessment of the module obtained an average percentage of 81.17%, classified as very practical. Based on the sig value in the sig (2-tailed) column of 0.000, which is smaller than 0.05, Ho is rejected and H1 is accepted, indicating that there is a difference in test results before and after using the module. This shows that learning using the heuristic-based module can improve students' mathematical problem-solving skills.

Development of social arithmetic teaching materials based on realistic mathematics education to facilitate mathematical reasoning skills Wati, Desi Kurnia; Saragih, Sehatta; Suanto, Elfis
Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika Vol. 7 No. 1 (2024): Jurnal Absis (In Press)
Publisher : Program Studi Pendidikan Matematika Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/absis.v7i1.2528

The Ministry of Education and Culture emphasizes the importance of mathematical reasoning; however, current student abilities in this area remain low due to limited independent learning, insufficient resources, and varied teaching approaches. To address these challenges, strategies such as Realistic Mathematics Education (RME) are crucial, necessitating the development of appropriate teaching materials. This research aimed to develop RME-based social arithmetic teaching materials using the 4-D model, which includes the stages of Define, Design, Development, and Dissemination. In the Define stage, researchers analyzed learner needs, learning outcomes, and relevant concepts, establishing clear learning objectives. The Design stage involved creating teaching materials through the compilation of tests, selection of media, formatting, and content design. During the Development stage, a formative evaluation was conducted, including expert assessments, one-on-one evaluations, and trials. The materials were validated with a score of 86.40%, classified as very valid. In limited trials, they received an average rating of 85.92%, classified as very practical, and in field trials, an average of 82.81%, classified as practical. In the Dissemination stage, the teaching materials were distributed to participating schools. The study concludes that RME-based social arithmetic materials effectively support the development of students' mathematical reasoning skills, meeting the criteria of validity and practicality.

Developing problem-based learning modules for flat-sided geometry to facilitate students' mathematical connection skills Ali, Elsiska Ningsi; Armis; Saragih, Sehatta
Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika Vol. 7 No. 1 (2024): Jurnal Absis (In Press)
Publisher : Program Studi Pendidikan Matematika Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/absis.v7i1.2597

This development study aims to produce a problem-based learning module on flat-sided geometry designed to enhance students' mathematical connection skills in Phase D. The teaching module consists of three main sections: the core, general information, and appendices. Given the limitations in students' mathematical connection skills, it is essential for teachers to use effective learning models. Problem-based learning focuses on real-world problems as the central point of instruction, helping students connect lessons to practical, everyday situations. This study followed the 4D development model, which includes the stages of define, design, develop, and disseminate. Product validation was conducted by three validators, who provided feedback for improvements. The readability of the student worksheets was tested through one-on-one trials with three students. Additionally, small-group trials involving 15 Phase D students from MTsN 4 Kampar were conducted to assess the module's practicality. The validation results showed an average score of 3.58, indicating the module is highly valid. The practicality test resulted in an average score of 87.5%, classifying the module as very practical. These findings demonstrate that the developed module can effectively improve students' mathematical connection skills. Furthermore, teachers can use this product as a teaching tool for the flat-sided geometry material in the mathematics learning process.

Analysis Of Student Errors On Algebraic Form Material Based On Kastolan Hasanah, Rizatul; Yuanita, Putri; Saragih, Sehatta; Roza, Yenita
JTMT: Journal Tadris Matematika Vol 4 No 02 (2023): Volume 04 Number 02 December 2023
Publisher : Universitas Islam Ahmad Dahlan (UIAD)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47435/jtmt.v4i02.1975

Algebraic calculation operations are basic material that is the basis for studying other mathematical material, but there are still many students who still make mistakes in solving algebraic calculation operation questions. Therefore, it is necessary to analyze the errors made by students in working on algebraic calculation operations questions. This research aims to describe the errors made by students when completing algebraic operations according to Kastolan theory in solving algebraic arithmetic operation problems. This type of research is qualitative descriptive research. The data collection technique used was a test. The data analysis techniques used were: examining the results of students' answers by identifying and analyzing the types of errors made by students in answering questions related to the Kastolan error type; 1) Calculate the percentage of error for each type of error, 2) The results of the percentage level are classified based on the percentage of error, 3) The data that has been obtained is then calculated and will be carried out using descriptive analysis, 4) Make conclusions from the results of the analysis of students' errors in working on form operation questions algebra based on the Kastolan error type. Based on the research data and discussions obtained, 69% of conceptual errors were in the high category, 58% of procedural errors were in the sufficient category, and 59% of technical errors were in the sufficient category. It can be concluded that the mistakes that many students make when working on test questions are conceptual errors, namely errors in understanding the questions. Factors that cause students to make mistakes are not understanding the concept and not being able to apply the concept

Co-Authors ', Armis ', Asmarita ', Sudarmono ', Suhermi ', Syofni ', Zuhri D Ade Suci Ramadhani 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 Arus Ginanjar Arus Ginanjar Atma Murni Atma Murni Cici Ayu Chintya Desi Kurnia Wati Dhea Ika Putri Dwinda, Tasya Syafa Eka Hayu Elfis Suanto Elsya Suharnita EMELIA EMELIA Enno Triandini Eva Novita Nurhasanah Farida Farida Fikri, Yomaysha Jasmia Ginanjar, Arus Hardy, Nabilla Hasanah, Rizatul Herni Purnamawati Hesty Marwani Siregar Indah Fitriani Irma Sari Juliana Purba Karisma, Romi Kartini KARTINI Kartini Kartini Kartini, Kartini Khusnal Marzuqo Laylatul Rahmi, Laylatul Luthfiani, Ulfa Maimunah, Maimunah Maruli, Fitryani Meldawati Rahman Morri Manik Muhammad Abdi Muliyana, Dewi Nadia Nadia Nadia Nadia Nahor Murani Hutapea Noveli, Sonya Novriyeni, Fitri 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 Rianti, Resmi Rini Dian Anggraini Rini Hardiyanti Ali Robbiati, Robbiati RR. Ella Evrita Hestiandari Sakur Sakur Sakur, Sakur Sandy, Aulia Saputra, Andespa Saputra, Andespa Seftia Wulan Dari Setiani, Nining Solly Aryza 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 Titi Solfitri Triandini, Bella Wati, Desi Kurnia Yenita Roza Yurrahma, Arretta Yusa Putra Zulkarnain Zulkarnain Zulkarnain Zulkarnain Zulkarnain Zulkarnain Zulkarnain Zulkarnain

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