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Elfis Suanto

Univeristas Riau

Author-ID : 3390740

Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Students’ Error Analysis in Solving Reasoning Problems on Sequences and Series Using Nolting’s Theory Harini, Elsa; Suanto, Elfis; Hutapea, Nahor Murani
PRISMA Vol 14, No 2 (2025): PRISMA
Publisher : Universitas Suryakancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35194/jp.v14i2.5281

Mathematical reasoning ability is an essential competency emphasized in the Merdeka Curriculum, particularly in the Learning Outcomes (CP) for Phase E, which requires students to understand, generalize, and prove mathematical concepts. However, various studies have shown that Indonesian students' mathematical reasoning skills remain relatively low, including in the topic of sequences and series. This study aims to analyze students’ errors in solving mathematical reasoning problems related to sequences and series in Grade 10, based on Nolting’s error theory. The research employed a qualitative descriptive approach involving 20 tenth-grade students from Senior High School 12 Pekanbaru. The research instrument consisted of four mathematical reasoning essay questions covering arithmetic and geometric sequences and series, adapted from Fadillah. The analysis revealed four types of student errors: Careless Errors (34.30%), Connection Errors (31.20%), Test-Taking Errors (21.80%), and Application Errors (17.50%). These errors were attributed to various factors, including cognitive factors such as lack of conceptual understanding and affective factors such as low learning motivation. The findings highlight the importance of teachers in analyzing student errors to help minimize learning difficulties in mathematics and improve the overall quality of mathematics instruction

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

Developing LKPD using the STEAM approach to facilitate the creative mathematical thinking ability of grade X students Safitri, Widiana; Yuanita, Putri; Suanto, Elfis
Jurnal Gantang Vol 10 No 2 (2025): Jurnal Gantang
Publisher : Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/nb2wg949

This study is based on the observation that students struggle to think mathematically creatively when studying statistical material, and that there is currently no effective learning tool to help students develop this skill. The purpose of this research is to inform the creation of a STEAM-based statistics worksheet for use with students in class X SMA/MA, to foster their capacity for mathematical creativity. This research uses the 4D model, including Define, Design, Develop, and Disseminate. Data collection techniques included observations and interviews. This study involved students from Class X at SMAN 2 Siak Hulu. The results indicate that LKPD is valid, based on expert review, and practical, as demonstrated by the field test. At the field trial stage, the LKPD developed meets the assessment aspects: ease of use, presentation, readability, and time. So, the STEAM-based LKPD can be used during learning to facilitate creative mathematical thinking abilities.

Developing PBL-based worksheets on sequences and series to enhance mathematical connection skills of senior high school students Puspita, Nurhaliza Citra; Heleni, Susda; Suanto, Elfis
Jurnal Gantang Vol 10 No 2 (2025): Jurnal Gantang
Publisher : Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/8kyexw71

This study was driven by students’ low mathematical connection ability in learning Sequences and Series, a skill essential for understanding relationships among mathematical concepts. The purpose of this research was to develop a Problem-Based Learning (PBL)-based student worksheet designed to improve students’ mathematical connection ability and to examine its validity and practicality. A development research approach was applied using the 4-D model—Define, Design, Develop, and Disseminate. The participants were tenth-grade students selected through purposive sampling. Data were collected using validation instruments, practicality questionnaires, interviews, and classroom observations. The validation process evaluated face, content, and construct validity. The developed worksheet demonstrated strong validity, with average scores of 89.29% for face validity, 89.29% for content validity, and 86.79% for construct validity. The overall validity score of 88.45% fell into the “very valid” category, indicating the product’s suitability for field implementation. The practicality assessment, focusing on design, clarity of material presentation, and ease of use, produced an average score of 83.27%, classified as “practical.” These findings suggest that the PBL-based worksheet is both valid and practical, offering potential as an effective instructional tool to support students in developing mathematical connection ability, particularly in topics related to Sequences and Series.

Development of CORE model-based student worksheet on trigonometric ratios to facilitate students’ mathematical conceptual understanding Putri, Salsabila Ivana; Suanto, Elfis; Yuanita, Putri
Jurnal Gantang Vol 10 No 2 (2025): Jurnal Gantang
Publisher : Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/xgrqmt18

This research was motivated by the low ability of students to understand mathematical concepts, particularly in the topic of trigonometric ratios. The CORE model was chosen because it encourages active student participation in constructing concepts through systematic stages. The purpose of this study is to develop a valid and practical CORE-based worksheet on trigonometric ratios to support students' conceptual understanding. The development process followed the 4-D model (define, design, development, disseminate). Research data consisted of qualitative input from validators and students, as well as quantitative data from questionnaire scores. Data collection was conducted through interviews and questionnaires using validation sheets and student response instruments. The sample was selected through purposive sampling: 6 students from class XE.1 (Small Group) and 30 students from class XE.3 (Field Test). A worksheet is considered valid and practical if it achieves its values. The results showed that the developed worksheet was very valid (94.31%) based on appearance, content, and construction aspects. It was also very practical, with scores of 97.36% for Small Group and 90.13% for Field Test, assessed based on presentation, ease of use, readability, and time. CORE based worksheets encourage students to actively construct concepts actively actively, thereby facilitating their ability to conceptual understand trigonometric ratios.

E-Module Development of Line and Angle Materials Assisted by Learning Videos for Junior High School Students Kartini Kartini; Rukiah Magdalena Hutabarat; Elfis Suanto
AL-ISHLAH: Jurnal Pendidikan Vol 14, No 4 (2022): AL-ISHLAH: Jurnal Pendidikan
Publisher : STAI Hubbulwathan Duri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35445/alishlah.v14i4.1539

This study aimed to develop an E-Module on Line and Angle material with learning videos to facilitate the mathematical understanding ability of seventh-grade junior high school students that meets the aspects of validity and practicality requirements. This study was a research and development method with a 4D development model consisting of the define, design, develop, and disseminate stages. The small group trial subjects were nine students of grade VII at a Junior High School in Pekanbaru. The data collection instrument in this study consisted of a validity instrument in the form of a validation sheet and a practical instrument in the form of a student response questionnaire sheet. Based on the analysis of the validation sheet data and student response questionnaire sheets, the average E-Module validation was 3.6 with a very valid category, and the E-Module practicality average was 3.3 with a very practical category. Thus, it can be concluded that the developed E-Module is valid and practical.

The Influence of Information and Communication Technology (ICT) Skill and Work Culture on Teacher Performance at SMP Negeri Bangkinang Kampar Fahni Maulina; Elfis Suanto; Hambali
Jurnal PAJAR (Pendidikan dan Pengajaran) Vol. 7 No. 6 (2023): November
Publisher : Laboratorium Program Studi Pendidikan Guru Sekolah Dasar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33578/pjr.v7i6.966

Teacher performance is something that needs and deserves to be examined in depth. Many factors cause problems related to teacher performance. This article covers the influence of information and communication technology (ICT) skills and work culture on the performance of state junior high school teachers in the Bangkinang districts of Kampar. This research uses a quantitative-descriptive approach. The quantitative-descriptive research systematically, actually, and accurately describes certain social phenomena to describe the existing facts and data in detail. Data collection techniques use observation, documentation, and questionnaires. The subjects of the research were 55 teachers at state junior high schools in Bangkinang. The results show that 1) information and communication technology (ICT) skill has a significant positive influence on teacher performance with a significance value of 0.002 or smaller than the alpha value of 0.05. In addition, 2) work culture has a significant positive influence on teacher performance with a significance value of 0.001. And, 3) information and communication technology (ICT) skill and work culture have a joint influence on teacher performance with a significance value of 0.000 and an R-square value of 0.403, which indicates that the proportion of influence of the variables information and communication technology (ICT) skill and work culture on teacher performance is 40.3%.

The Influence of the Principal's Leadership and Work Culture on Teacher Performance at SDN Lima Puluh Pekanbaru Desilawati; Elfis Suanto; Arza Aibonotika
Jurnal PAJAR (Pendidikan dan Pengajaran) Vol. 7 No. 6 (2023): November
Publisher : Laboratorium Program Studi Pendidikan Guru Sekolah Dasar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33578/pjr.v7i6.9686

Teacher performance is required to be examined in depth. The factors that lead to the problems are related to teacher performance. Hence, this paper examines the in-depth influence of the principal's leadership and work culture on teacher performance at SDN Limapuluh Pekanbaru. This research uses a quantitative descriptive approach. Data collection techniques use observation, documentation, and questionnaires. The research subjects involved 142 teachers at SDN Limapuluh Pekanbaru. The sample of the research was carried out using Proportional Random Sampling, namely a method of taking samples from members of the population using a random method without paying attention to the strata in the population. The research results indicate that 1) the principal's leadership has a significant positive influence on teacher performance with a significance value of 0.000 or less than an alpha value of 0.05, 2) work culture has a significant positive influence on teacher performance with a significance value of 0.000, and 3) the principal's leadership and work culture jointly influence teacher performance with a significance value of 0.000 and an R-Square value of 0.758. This indicates that the proportion of influence of the principal's leadership and work culture variables on the teacher performance variable is 75.8%.

DAMPAK PENDEKATAN RME DENGAN KONTEKS BUDAYA TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIS DAN SELF EFFICACY SISWA Yuanita, Putri; Aisyah, Putri; Suanto, Elfis
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.v14i4.13577

Keterbatasan kemampuan memecahkan masalah matematis serta keyakinan diri (self efficacy) siswa yang terungkap melalui hasil penilaian PISA dan dari penelitian terdahulu menjadi latar belakang pentingnya penerapan pembelajaran yang bersifat nyata salah satunya melalui pendekatan RME dengan penekanan pada konteks budaya Melayu Riau. Tujuan dari studi ini guna mengkaji pengaruh pendekatan Realistic Mathematic Education (RME) dengan basis konteks budaya Riau pada kemampuan pemecahan masalah matematis serta self efficacy siswa baik yang umum atau berdasar kemampuan awal matematis (KAM). Semua siswa SMP Negeri di Kecamatan Marpoyan Damai menjadi populasi dan sampel penelitian berupa siswa kelas IX di SMPN 25 Pekanbaru ditentukan lewat teknik purposive sampling. Adapun tes serta angket diterapkan sebagai instrumen dalam mengumpulkan data studi. Uji T, ANOVA satu jalur, dan ANOVA dua jalur dipakai guna menganalisis perolehan data rerata kemampuan pemecahan kemampuan pemecahan masalah matematis antara siswa yang menerima pembelajaran dengan pendekatan RME berbasis konteks budaya Melayu Riau dan siswa yang menjalani pembelajaran konvensional. Hasil studi memperlihatkan adanya kemampuan dalam memecahkan masalah matematis yang berbeda antara siswa yang memperoleh pendekatan pembelajaran RME berbasis konteks budaya Melayu Riau dan siswa yang menjalani pembelajaran konvensional. Peningkatan self efficacy pada siswa yang mengikuti RME berbasis konteks budaya Melayu Riau menunjukkan perbedaan signifikan dibandingkan siswa pembelajaran konvensional, baik secara keseluruhan maupun berdasarkan KAM dan self efficacy siswa terlihat pada kelompok RME berbasis konteks budaya Melayu Riau dibanding pembelajaran konvensional.The constraints in students’ mathematical problem-solving proficiency and self-efficacy, as unveiled through PISA assessments and antecedent studies, constitute the rationale for the implementation of authentic learning, notably via the Realistic Mathematics Education (RME) approach with emphasis on the Malay Riau cultural context. This study aims to investigate the impact of the RME approach grounded in the Riau cultural context on students’ mathematical problem-solving capacities and self-efficacy, both in general and according to initial mathematical ability (KAM). The entire population of public junior high school students in the Marpoyan Damai District was considered, while the study sample consisted of ninth-grade students at SMPN 25 Pekanbaru, selected using a purposive sampling technique. Tests and questionnaires were employed as instruments for data acquisition. T-tests, one-way ANOVA, and two-way ANOVA were utilized to examine the mean differences in mathematical problem-solving abilities between students exposed to RME-based instruction grounded in the Malay Riau cultural context and those who underwent conventional learning. The study outcomes revealed distinct capacities in mathematical problem-solving between students who experienced RME-based instruction within the Malay Riau cultural context and those who underwent conventional teaching. The enhancement of self-efficacy among students exposed to RME grounded in the Malay Riau cultural context demonstrated a significant divergence compared to those in conventional learning, both overall and according to KAM, with self-efficacy levels particularly pronounced in the RME-based cohort relative to the conventional instruction group.

Modul Ajar Berbasis Problem Based Learning Konten Sistem Persamaan dan Pertidaksamaan Linear untuk Memfasilitasi Kemampuan Pemecahan Masalah Matematis Peserta Didik Putri, Adela; Armis, Armis; Suanto, Elfis
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.v5i1.3242

This study aims to develop a Problem Based Learning–based teaching module on the topic of Systems of Linear Equations and Inequalities to facilitate students’ mathematical problem-solving skills, with the criteria of validity and practicality. This research is a development study employing the 4D model, which consists of Define, Design, Develop, and Disseminate stages. The development process includes several stages: (1) Define, which involves front-end analysis, learner analysis, concept analysis, task analysis, and the specification of learning objectives; (2) Design, which includes the preparation of test standards, media selection, format determination, and initial design; (3) Develop, which comprises expert validation and development trials; and (4) Disseminate, which involves the dissemination of the product through seminars and publications. The instruments used in this study were expert validation sheets to assess the validity of the teaching module and student response questionnaires to measure the practicality of the student worksheets (LKPD). The results indicate that the teaching module is valid in several aspects and meets the criteria of being very valid after revisions based on validators’ suggestions. Furthermore, the implementation of the LKPD in the small group and field test stages demonstrates that the LKPD is very practical. This is evidenced by the fact that the LKPD is easy for students to understand.

Co-Authors ', Armis ', Kartini AA Sudharmawan, AA Abdul Latif Abu Nawas Adnan, Mustika Aulia Aini, Fahratul Akhmad Jazuli Amalia, Della Nur Andini, Fitri Andria, Adrila Anggaraini, Dila Anita Sari Aqilah, Zharifatul Aras Mulyadi Armis Armis Armis Armis Armis Arza Aibonotika Atma Murni Atma Murni Azhar Azhar Bisri Mustofa Daulay, Agus Salim Daviq Chairilsyah Dedi Futra Dedi Surahman Desilawati Desilawati, Desilawati Desnani Ulfa Dewi, Sri Intan Retno Efriyeldi, Efriyeldi Eka Setyaningsih Eka Setyaningsih Elizal, Elizal Erlisnawati Erlisnawati Erni Erni Etika Pujiati Pujiati Fadilah Gustin Khainingsih Fahni Maulina Fahrani, Ibnah Wanda Fariyani, Sri Aisyah Febrina Ramadhani Feni Alvia Alvia Fitni Fitni Fitri Fitri Fitriana, Lily Frianita Riswandi Gaban Frianti, Yeni Gaban, Frianita Riswandi Giva Putri, Meini Hafshoh Hambali Hambali Hambali Harini, Elsa Hasna, Annisa Hayati Hayati Hayati, Mella Irma Sari Isjoni Isjoni Isnawan, Mohamad Galang Jalinu ' Jesi Alexander Alim Joko Samiaji Jumeri (Jumeri) KARTINI Kartini Kartini Kartini, Kartini Kartini, Kartini Kristina Murti, Meri Kurnia Noviananda Lenny Sapitri Lestari Ning Tyas Ning Tyas Luthfiani, Ulfa Mahmud Alpusari Maimunah Maimunah Maimunah, Maimunah Malinda, Ari Manurung, Julian Lois Mar Atuz Zakiyah Mar'atuz Zakiyah Marni Swasti Marni Yenti Yenti, Marni Yenti Maruli, Fitryani Maulina, Fahni Mira Sepriana Sepriana Mira Sepriana Septiana Muhamad Julfianto Murti, Meri Kristina Nahor Murani Hutapea Nainggolan, Sabrina Nainggolan, Susy Irawaty Neni Hermita Ningrum, Rosilawati Kusuma Noviananda, Kurnia Novita Rasta Rasta Nur Aziela Nur Hajizah Nur Syafitri Nursyirwani, Nursyirwani Prilia Devina Puspita, Nurhaliza Citra Putri Aisyah, Putri Putri Yuanita Putri, Adela Putri, Salsabila Ivana Rahim, Essy Puspita Rahmadanis Shafira Rahmaini, Annisa Rahmawati, Herika Ranti Silvia Ratnawati Ratnawati Ravina Faradilla Syahril Refli Annisa Reni Restiani Reskina Rianti, Efni Rini Dian Anggraini Riza Derniati Rukiah Magdalena Hutabarat Safitri, Widiana Sakur Sakur Sakur, Sakur Sanda, Nabila Sarafina Rezki Sariati Ika Darma Sehatta Saragi Saragih Sehatta Saragih Sehatta Saragih Sehatta Saragih Septianita, Devi Silvia Yohana Sitanggang Sonia, Anisa Sri Atika Annovli Sri Devi Kurniasari Sri Indrawati, Sri Sri Kartikowati Sri Kartikowati Suarman Suhailis Suhailis Suhermi Suhermi Suhermi, Suhermi Suhermi, Suhermi Surya, Resi Fitriani Susda Heleni Susianingsih, Susianingsih Swasto, Widya Syafaruddin Syarifah Nur Siregar Syofni Syofni Syofni Syofni Syofni Titi Solfitri Tommy Taufik Epindonta Ginting Trisna Wenti Uirma Isnani Anisa Ulfa Luthfiani Wanda Nugroho Yanuarto Wati, Desi Kurnia Wiwik Julia Fitri Yendri, Yulia Yenita Roza Zahera, Riska Zahra, Dinda Sabrina Zakiyah, Mar’atuz Zima Ratna Sari Zuhri D Zuhri D Zuhri D, Zuhri D Zuhri Zuhri, Zuhri Zuhri. D ' Zulkarnain Zulkarnain Zulkarnain Zulkarnain Zulkarnain Zulnaidi, Hutkemri Zunianto, Rizki

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