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Sadiana Lase

Prodi Pendidikan Matematika, Universitas Nias

Author-ID : 1096430

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EKSPLORASI GAYA BELAJAR MAHASISWA PENDIDIKAN MATEMATIKA FKIP UNIVERSITAS NIAS DALAM MENYELESAIKAN TUGAS BERBASIS PROYEK Sadiana Lase
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.v10i2.11243

This study aims to explore the learning styles of Mathematics Education students of the Faculty of Teacher Training and Education, Nias University in completing project-based assignments. The background of this study is based on the fact that each student has a different learning style tendency, which has a direct impact on the strategy and results of completing assignments. This study uses a qualitative approach with a case study method. The subjects of the study consisted of seven active students who were selected purposively based on their involvement in lecture project assignments. Data collection techniques include in-depth interviews, observation, and documentation. The results of the study indicate that students have a tendency towards three main learning styles, namely visual, auditory, and kinesthetic. Students with a visual style prefer the presentation of information graphically and systematically. Auditory students tend to understand the material through discussion and verbal explanation, while kinesthetic students are more active in assignments that involve direct practice. These variations in learning styles affect the way students plan, work on, and complete project assignments. It was also found that group work is more effective when each member has a complementary learning style. This study concludes that understanding students' learning styles is important for lecturers to consider in designing project-based assignments. With the right approach, the learning process will be more inclusive and meaningful for each individual.

Analisis Hasil Belajar Matematika Siswa dalam Penerapan Kurikulum Merdeka di UPTD SMP Negeri 4 Gunungsitoli Utara Jupi Yarman Lase; Sadiana Lase; Yulisman Zega; Yakin Niat Telaumbanua
Ideguru: Jurnal Karya Ilmiah Guru Vol. 10 No. 1 (2025): January 2025 Edition
Publisher : Dinas Pendidikan, Pemuda dan Olahraga Daerah Istimewa Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51169/ideguru.v10i1.1475

The Merdeka Curriculum is a recent initiative in Indonesia's education reform aimed at granting greater autonomy to schools and teachers in designing the learning process tailored to students' needs. Specifically, the Merdeka Curriculum is a government-driven process designed to create an environment that encourages students' active participation in learning, particularly in mathematics education. This process also involves active student engagement and reflects the outcomes of the learning experience. Student learning outcomes refer to the abilities acquired through educational activities and serve as quantitative indicators of post-learning evaluation. This study was conducted at UPTD SMP Negeri 4 Gunungsitoli Utara, specifically in Grade VIII. The research design is a qualitative descriptive study aimed at analyzing and describing student learning outcomes with respect to the implementation of the Merdeka Curriculum. Analysis of test results, which were administered to assess students' understanding of exponentiation concepts, revealed an average score of 65.74, with a mastery percentage of 70.37% and a non-mastery percentage of 29.63%. The student learning outcomes under the Merdeka Curriculum also show significant variation, depending on the preparedness of schools and teachers for implementing this curriculum.

PENGARUH MODEL PEMBELAJARAN KOOPERATIF TIPE STUDENT TEAM ACHIEVEMENT DIVISION BERBANTUAN QUIZIZZ TERHADAP HASIL BELAJAR MATEMATIKA SISWA Joice Erna Lase; Netti Kariani Mendrofa; Sadiana Lase; Yakin Niat Telaumbanua
Al-Irsyad Journal of Mathematics Education Vol 5 No 1 (2026): AL–IRSYAD JOURNAL OF MATHEMATICS EDUCATION
Publisher : Sekolah Tinggi Keguruan dan Ilmu Pendidikan Darud Da'wah Wal Irsyad Pinrang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58917/ijme.v5i1.455

Penelitian ini dilatarbelakangi oleh temuan dari hasil observasi di SMA Negeri 3 Gunungsitoli, yaitu (1) rendahnya pencapaian belajar matematika siswa, (2) guru masih menerapkan model pembelajaran konvensional, dan (3) minimnya pemanfaatan media pembelajaran. Upaya untuk mengatasi masalah tersebut dilakukan melalui penerapan model pembelajaran kooperatif tipe Student Team Achievement Division (STAD) berbantuan Quizizz. Penelitian ini bertujuan untuk mengetahui pengaruh model pembelajaran kooperatif tipe Student Team Achievement Division (STAD) berbantuan Quizizz terhadap hasil belajar matematika siswa kelas X. Penelitian menggunakan desain quasi-eksperimen dengan nonequivalent control group, melibatkan kelas eksperimen (36 siswa) dan kelas kontrol (35 siswa). Data dikumpulkan melalui tes awal (pretest) dan tes akhir (posttest) yang telah diuji validitas dan reliabilitasnya, serta dianalisis menggunakan uji normalitas, uji homogenitas, dan uji t independen pada taraf signifikansi 5%. Hasil penelitian menunjukkan bahwa rata-rata nilai tes akhir kelas eksperimen meningkat secara signifikan dari 40,30 menjadi 79,82, sedangkan kelas kontrol hanya meningkat dari 36,30 menjadi 66,87. Persentase ketuntasan belajar di kelas eksperimen juga meningkat dari 0% menjadi 88,9%, dan skor kuis harian menunjukkan peningkatan pemahaman materi secara bertahapBerdasarkan hasil uji t diperoleh nilai Sig. (2-tailed) 0,000 < 0,05, yang berarti bahwa penggunaan model pembelajaran kooperatif tipe STAD berbantuan Quizizz berpengaruh signifikan terhadap hasil belajar matematika siswa SMA Negeri 3 Gunungsitoli.

PENGARUH MODEL PEMBELAJARAN PAIR CHECK TERHADAP HASIL BELAJAR MATEMATIKA SISWA Helpi Sri Rezeki Zebua; Netti Kariani Mendrofa; Sadiana Lase; Ratna Natalia Mendrofa
Al-Irsyad Journal of Mathematics Education Vol 5 No 1 (2026): AL–IRSYAD JOURNAL OF MATHEMATICS EDUCATION
Publisher : Sekolah Tinggi Keguruan dan Ilmu Pendidikan Darud Da'wah Wal Irsyad Pinrang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58917/ijme.v5i1.456

Penelitian ini bertujuan untuk menganalisis pengaruh model pembelajaran Pair Check terhadap hasil belajar matematika siswa kelas VIII UPTD SMP Negeri 1 Gunungsitoli Barat tahun ajaran 2024/2025. Metode yang digunakan adalah eksperimen semu dengan desain Nonequivalent Control Group Design. Sampel penelitian terdiri dari dua kelas, yaitu kelas eksperimen dengan model Pair Check dan kelas kontrol dengan pembelajaran konvensional, masing-masing berjumlah 28 siswa. Instrumen penelitian berupa tes uraian yang divalidasi dan diuji reliabilitasnya. Hasil uji statistik deskriptif menunjukkan bahwa nilai rata-rata tes awal kelas eksperimen sebesar 44,11 dan kelas kontrol 43,07, sedangkan nilai rata-rata tes akhir kelas eksperimen meningkat menjadi 81,75 dan kelas kontrol 62,68. Uji normalitas dan homogenitas menunjukkan bahwa data berdistribusi normal dan homogen. Pengujian hipotesis dengan uji t independen menghasilkan nilai signifikansi 0,00 < 0,05 serta thitung = 5,9915 > ttabel = 1,673, sehingga Ho ditolak dan Ha diterima. Dengan demikian, dapat disimpulkan bahwa penerapan model pembelajaran Pair Check berpengaruh positif dan signifikan terhadap peningkatan hasil belajar matematika siswa.

Pengembangan Modul Pembelajaran Matematika Berbasis Problem Based Learning untuk Meningkatkan Kemampuan Berpikir Kritis Matematis Siswa SMP dalam Implementasi Kurikulum Merdeka Benedikta Zega; Netti Kariani Mendrofa; Sadiana Lase; Yakin Niat Telaumbanua
Jurnal Cendekia : Jurnal Pendidikan Matematika Vol 10 No 2 (2026): Jurnal Cendekia: Jurnal Pendidikan Matematika Volume 10 Nomor 2 Tahun 2026
Publisher : Mathematics Education Study Program

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cendekia.v10i2.4680

Penelitian ini didasari oleh pengamatan di UPTD SMP Negeri 5 Gunungsitoli yang menunjukkan bahwa kemampuan berpikir kritis matematis siswa masih sangat lemah, ditambah dengan kurangnya modul pembelajaran matematika yang dirancang khusus untuk siswa kelas delapan. Oleh karena itu, penelitian ini bertujuan untuk mengembangkan modul pembelajaran berbasis Problem Based Learning yang valid, praktis, dan efektif guna meningkatkan kemampuan berpikir kritis matematis siswa. Penelitian ini termasuk dalam kategori penelitian dan pengembangan (R&D) dengan menerapkan model ADDIE yang terdiri dari lima tahap utama: analisis, desain, pengembangan, implementasi, dan evaluasi. Peserta penelitian adalah 32 siswa kelas VIII di UPTD SMP Negeri 5 Gunungsitoli. Data yang dikumpulkan meliputi data kuantitatif dan kualitatif yang diperoleh melalui instrumen seperti kuesioner dan tes. Berdasarkan hasil penelitian, modul yang dihasilkan memenuhi persyaratan kelayakan setelah dievaluasi dari segi desain, bahasa, dan validitas isi. Selain itu, modul tersebut memperoleh nilai kepraktisan sebesar 87,14% berdasarkan penilaian guru dan 91,46% berdasarkan respons siswa, yang menunjukkan bahwa modul tersebut sangat praktis. Berdasarkan hasil evaluasi tes, tingkat penguasaan materi siswa mencapai 90,6% dan masuk dalam kategori “sangat efektif”, serta tingkat rata-rata keterampilan berpikir kritis matematika siswa sebesar 82,34 dan masuk dalam kategori “sangat baik”. Oleh karena itu, dapat disimpulkan bahwa modul pembelajaran berbasis problem based learning yang dibuat berhasil meningkatkan kemampuan berpikir kritis siswa dalam matematika.

Analisis Kemampuan Pemecahan Masalah Mahasiswa pada Mata Kuliah Kalkulus di Universitas Nias. Sadiana Lase
Education & Learning Vol. 6 No. 1 (2026)
Publisher : Medan Resource Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57251/el.v6i1.1929

Penelitian ini bertujuan menganalisis kemampuan pemecahan masalah mahasiswa semester 1 Pendidikan Matematika FKIP Universitas Nias pada mata kuliah Kalkulus. Penelitian menggunakan pendekatan deskriptif kualitatif dengan melibatkan 18 mahasiswa. Data dikumpulkan melalui tes pemecahan masalah yang mencakup empat indikator Polya: memahami masalah, merencanakan penyelesaian, melaksanakan rencana, dan memeriksa kembali hasil. Hasil penelitian menunjukkan bahwa kemampuan mahasiswa berada pada kategori sedang, dengan kelemahan utama pada tahap perencanaan strategi dan pemeriksaan hasil. Temuan ini menegaskan pentingnya penguatan konsep dasar dan pembelajaran berbasis masalah dalam meningkatkan kemampuan pemecahan masalah mahasiswa.

Analisis Kemampuan Berpikir Kritis Mahasiswa Pendidikan Matematika Fakultas Keguruan dan Ilmu Pendidikan Universitas Nias dalam Menyelesaikan Soal Higher Order Thinking Skills (HOTS) Sadiana Lase
Pedagogika: Jurnal Ilmu-Ilmu Kependidikan Vol. 6 No. 1 (2026)
Publisher : Medan Resource Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57251/ped.v6i1.2126

Critical thinking is an essential competency for prospective mathematics teachers, yet many students continue to experience difficulties in solving Higher Order Thinking Skills (HOTS) problems. This study aimed to analyze the critical thinking skills of Mathematics Education students at the Faculty of Teacher Training and Education, Universitas Nias, in solving HOTS problems. A descriptive qualitative approach was employed involving 40 fourth-semester students selected through purposive sampling. Data were collected using HOTS tests, semi-structured interviews, and observations, and analyzed using the Miles and Huberman interactive model. The findings revealed that students' critical thinking skills remained low, with an average achievement of 46.7% based on Facione's indicators. The weakest dimensions were evaluation (35.8%) and self-regulation (38.9%), while the greatest difficulty in Bloom's revised taxonomy occurred at the creating level (70.3%). Metacognitive errors (86.7%) and transformation errors (80.0%) dominated students' responses, indicating limitations in reflective thinking and mathematical modeling. The study concludes that Mathematics Education students require pedagogical interventions emphasizing metacognitive scaffolding and open-ended problem-solving to strengthen critical thinking and Higher Order Thinking Skills competencies.

Development of Mathematics Learning Media Using Wordwall to Improve Students' Interest and Learning Outcomes Putra Mei Anugrah Halawa; Yakin Niat Telaumbanua; Ratna Natalia Mendrofa; Sadiana Lase
Kognitif: Jurnal Riset HOTS Pendidikan Matematika Vol. 5 No. 4 (2025): October - December 2025
Publisher : Education and Talent Development Center Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/kognitif.v5i4.3816

This study addresses the limited use of technology-based instructional media and insufficient instructional time in mathematics learning. It aims to develop and evaluate Wordwall-based learning media in terms of validity, practicality, and effectiveness in improving students’ learning interest and achievement. The study employed a Research and Development design using the ADDIE model up to the evaluation stage. Participants included 32 eighth-grade students from SMP Negeri 3 Huruna and one mathematics teacher. Data were collected through expert validation involving three validators, student and teacher response questionnaires, and learning achievement tests. Data analysis combined descriptive qualitative analysis with quantitative analysis using percentage scores and pretest–posttest comparisons. The findings indicate that the developed media is valid in terms of content, language, and visual design; highly practical, as reflected by positive responses from more than 90 percent of students and teachers; and effective in improving learning interest, with an average increase of 25 percent, as well as learning outcomes, with an N-gain of 0.62 in the medium–high category. The novelty of this study lies in positioning Wordwall not merely as a gamification tool, but as an interactive learning medium systematically integrated within the ADDIE instructional design framework for mathematics learning. Theoretically, this study strengthens evidence on the role of gamification within instructional design. Practically, it offers teachers a viable strategy to address time constraints while enhancing student engagement and learning outcomes.

PENGARUH MODEL PEMBELAJARAN DISKURSUS MULTI REPRESENTASI (DMR) TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIS SISWA UPTD SMP NEGERI 7 GUNUNGSITOLI Nurul Ihsani Giawa; Yakin Niat Telaumbanua; Sadiana Lase; Ratna Natalia Mendrofa
PENDIDIKAN SAINS DAN TEKNOLOGI Vol 12 No 4 (2025)
Publisher : STKIP PGRI Situbondo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47668/edusaintek.v12i4.2064

This study is based on the results of a preliminary study conducted by researchers at UPTD SMP Negeri 7 Gunungsitoli, found problems, namely (1) the learning model in the classroom is less varied and (2) the lack of students' mathematical problemsolving abilities in solving mathematical problems. The purpose of this study was to determine the effect of the Multi Representation Discourse (DMR) learning model on the mathematical problemsolving abilities of students at UPTD SMP Negeri 7 Gunungsitoli. This type of research is quantitative research using a quasiexperimental method with a pretest-posttest control group design. The population of this study was grade VIII students and the research sample consisted of two classes, namely VIII-C as the experimental class and VIII-A as the control class. The instrument in this study was in the form of a mathematical problemsolving ability essay test. The results of the study obtained based on oneparty hypothesis testing obtained a tcount value = 5,283 and a ttable value = 1.678. Because tcount > ttable or 5,283> 1.678, reject H0 and accept Ha, which means "there is an influence of the Multi Representation Discourse (DMR) learning model on students' mathematical problemsolving abilities".

PENGARUH MODEL PEMBELAJARAN PROJECT BASED LEARNING (PJBL) TERHADAP HASIL BELAJAR MATEMATIKA SISWA SMP NEGERI 4 ALASA PADA KURIKULUM MERDEKA Putri Wulandari Zalukhu; Ratna Natalia Mendrofa; Yakin Niat Telaumbanua; Sadiana Lase
PENDIDIKAN SAINS DAN TEKNOLOGI Vol 12 No 4 (2025)
Publisher : STKIP PGRI Situbondo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47668/edusaintek.v12i4.2066

This study was motivated by the low mathematics learning outcomes among students, their limited engagement during the learning process, and the unappealing presentation of learning materials at SMP Negeri 4 Alasa. The purpose of this research was to examine the effect of the Project-Based Learning (PjBL) model on students' mathematics learning outcomes within the Merdeka Curriculum. This experimental study employed a quasi-experimental method using a Nonequivalent Control Group Design. The research subjects included all seventh-grade students at SMP Negeri 4 Alasa, with class VII-B (30 students) serving as the experimental group taught using the PjBL model, while class VII-A (30 students) served as the control group using conventional teaching methods. The instrument used was an essay-based learning outcome test comprising five questions. Data analysis results showed that the calculated t-value was greater than the critical t-value (4.855 > 1.671). Thus, H0 was rejected, and Hₐ was accepted, indicating that the implementation of the Project-Based Learning (PjBL) model had a significant effect on students' mathematics learning outcomes under the Merdeka Curriculum.

Co-Authors Abi Rahmad Zalukhu Alfin Putra Idaman Mendrofa Alpian Hulu Amin Otoni Harefa Aristarkhus Hulu Arnis Oktarina Gea Bawamenewi, Arozatulo Bawamenewi, Eniman Benedikta Zega Berto Funny Hulu Buulolo, Wining Helsavania Citra Cahyani Telaumbanua Daeli, Veridiana Dalifati Ziliwu Diani Astuti Zebua Eman Putra Jaya Gulo Erenu Kharisman Gea Etika Zebua Eunike Zai Ferina Harefa Feroniska Hia Gea, Desri Yanti Gea, Harapan Gea, Kalebi Rahmat Esa Gea, Nopita Gulo, Alfa Stephen Notatema Gulo, Devi Ratna Sari Gulo, Irwan Krisman Halawa, Nova Martilina HALAWA, YUFITA Harefa, Agnes Renostini Harefa, Ahmad Din Helpi Sri Rezeki Zebua Hia, Ester Ikhlas Anwar Lahagu Intan Wirna Waruwu Iwan Berkat Zega Joice Erna Lase Jonatan Zebua Jujur Sabdani Harefa Julilian Zebua Jupi Yarman Lase Kalebi Rahmat Esa Gea Laia, Dimaria Laia, Tiar Nisanna Handayani Laoli, Jaya Saputra Laoli, Jon Wancer Lase, Lisa Desi Mawati Lase, Sadar Riang Lase, Shinta Putri Angraeni Marlin Herlina Zega Marlinawati Telaumbanua Marwan Putra Laia Mendrofa , Netti Kariani Mendrofa, Asri Selvi Putri Mendrofa, Ratna Natalia Mendrofa, Versily Murni Hulu, Elvin Syah Murni Niat Yanti Zendrato Nazara, Lilis Pretty Ndruru, Melida NETTI KARIANI MENDOFA Netti Kariani Mendrofa Nurul Ihsani Giawa Oskah Dakhi Putra Mei Anugrah Halawa Putri Wulandari Zalukhu Ramaeli Lase Ratna Natalia Mendrofa Ratna Natalia Mendrofa Rica Apriliani Zega SALOME WARUWU Septriani Telaumbanua Seya Setia Zega Susi Sabar Menanti Harefa Syukur Iman Zendrato Tafonao Sotanius Telaumbanua, Kristof Martin Efori Telaumbanua, Nobuala Telaumbanua, Reska Widyanti Telaumbanua, Windi Diantari Telaumbanua, Yakin Niat Tiar Nisanna Handayani Laia Trisna Wahyu Ningsi Lase Valeria Zebua Waruwu, Lilis Priska Wiljan Analisa Perdamaian Harefa Yakin Niat Telaumbanua Yakin Niat Telaumbanua Yakin Niat Telaumbanuad Yosef Darwin Telaumbanua Yulisman Zega Yulisman Zega ZAI, EDISON Zai, Firman Pikir Zebua, Etika Zebua, Srinuryanti Zebua, Vance Gunawan Zega, Laksmi Nirmala Zega, Mira Astuti Zega, Pretty Souvenir Zega, Silih Mentari Zendrato, Arikasian Zendrato, Dedy Rahmat Zendrato, Niat Wati

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