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All Journal Edumatsains Jurnal Dinamika Pendidikan Wacana Akademika : Majalah Ilmiah Kependidikan Journal of Educational Research and Evaluation Jurnal Riset Pendidikan dan Inovasi Pembelajaran Matematika (JRPIPM) Indonesian Community Journal Al Jahiz: Journal of Biology Education Research Brillo Journal Jurnal Pengabdian Sains dan Humaniora IndoMath: Indonesia Mathematics Education International Journal of Teaching and Learning (INJOTEL)
Stevi Natalia
Universitas Kristen Indonesia
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Economics, Econometrics & Finance Education Environmental Science Languange, Linguistic, Communication & Media Mathematics Physics Public Health Social Sciences Other

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Learning Obstacle to Ontogeny of Mathematics Teacher Candidates on Number Theory Natalia, Stevi; Darhim; Kusumah, Yaya S.; Ditasona, Candra
Journal of Education Reseach and Evaluation Vol 7 No 3 (2023): August
Publisher : LPPM Undiksha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jere.v7i3.66629

Abstract

Prospective mathematics teachers must have the characteristics of mathematical science, namely systematic, logical, and critical. This study aims to reveal the analysis of learning obstacles experienced by prospective mathematics teachers in number theory lectures with sub-material of division relations, FPB and KPK. This research uses a qualitative approach method in descriptive form. This research was conducted by collecting data through questionnaires and interviews and validated using the triangulation method. The study was limited to the analysis of ontogenic learning obstacles according to Brosseasu. The results of this study were that 4 out of 6 research subjects experienced the occurrence of ontogenic learning obstacles with details of 37.5% of prospective teacher students experiencing psychological ontogenic obstacles and instrumental ontogenic obstacles, then 25% experiencing didactic ontogenic obstacles. This indicates that students' readiness to take part in number theory courses is still weak. Students are weak in terms of psychological readiness, weak in readiness for complete mastery of related material previously studied and weak in terms of following the thought process needed in this course.
Scientific Academic Writing Skills Among University Students: Results from a Self-Assessment Survey Lussy Midani Rizki; Stevi Natalia; Nurafni; Suparman; Darhim Kusumah; Yaya S. Kusumah; Dadang Juandi
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 9 No 2 (2025): January
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v9i2.6355

Abstract

This qualitative descriptive study provides a comprehensive profile of scientific academic writing skills among university students enrolled in mathematics education and primary school teacher education programs. Using a self-assessment survey, 110 students evaluated their proficiency across various dimensions of scientific writing, including clarity and coherence, organization of scientific arguments, use of scientific terminology, citation and referencing, critical evaluation of literature, and independent thinking. The data were analyzed using descriptive statistics to identify trends, strengths, and areas for improvement in students' writing skills. The findings revealed that students generally feel confident in their ability to construct clear academic paragraphs and use appropriate vocabulary and tone, but struggle with higher-order writing tasks such as synthesizing information from multiple sources and organizing extended scientific texts. Many students also expressed difficulties in applying proper citation and referencing styles, particularly APA format. Key strengths identified in the study include competence in basic grammar, punctuation, and paragraph structure, while notable weaknesses were found in areas such as critical evaluation, organizing complex arguments, and correct application of citation conventions. These results suggest a need for targeted instructional interventions to help students develop the advanced scientific writing skills necessary for academic success. The study's findings contribute to the ongoing discourse on improving scientific academic writing pedagogy, offering insights for educators to better support students in mastering these critical skills.
Development of Learning Styles based Mathematics E-module to Enhance Student’s Numeracy Skills Richard; Stevi Natalia; Tan Hian Nio
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 3 (2026): January
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i3.7483

Abstract

This research’s purpose is to develop an e-module based on students learning style to increase the numeracy skills of students. The research method used is Research and Development (RnD) method. The RnD model used in this research is ADDIE model. The result of this research is an e-module based on student’s learning style and validated with material validation mean score of 3,770 within very valid category, media validation mean score of 3,631 within very valid category, and language validation mean score of 3,167 within valid category. The validated module is then implemented and is tested based on effectivity and the N-gain score of 0,44 is gotten with the increase category of medium. Hence, it is concluded that the e-module based on students learning style can increase student’s numeracy skills.
From Definition to Need: Redefining the Selected Topics in Mathematics Education Course Through Students’ Mastery Profiles Santri Chintia Purba; Candra Ditasona; Stevi Natalia
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 2 (2025): October
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i2.7489

Abstract

This study aims to analyze mathematics education students’ mastery of high school mathematical content and their readiness to teach it, as a basis for redefining the design of the Selected Topics in Mathematics Education (Kapita Selekta) course. A quantitative descriptive survey design was employed involving 14 mathematics education students at Universitas Kristen Indonesia who were enrolled in the Kapita Selekta II course. Data were collected using a questionnaire that assessed students’ mastery and willingness to learn and teach 32 high school mathematics topics. Descriptive statistics were used to determine the percentage of mastery and non-mastery for each topic. The findings reveal that only 40.13% of topics were mastered, while 59.87% showed a lack of mastery. Students demonstrated stronger understanding in algebraic and symbolic topics such as sequences, exponents, relations, and matrices, but weaker performance in geometry, trigonometry, and calculus-related topics. Despite these gaps, all respondents expressed a willingness to improve their mastery of mathematical content, with 42.9% being very willing and 57.1% willing to do so. These results suggest that the Kapita Selekta course should not be limited to topic selection based on theoretical definitions. Instead, it should be redesigned to respond to students’ actual mastery profiles and learning needs. By aligning course content with diagnostic data, the program can strengthen students’ mathematical competence and pedagogical readiness to teach effectively at the high school level.
Pedagogical Content Knowledge (PCK) of Prospective Science Teachers in ASEAN to Realize Sustainable Development Action Riska Septia Wahyuningtyas; Manogari Sianturi; Elferida Sormin; Candra Ditasona; Santri Chintia Purba; Stevi Natalia; Merle L. Junsay; Rene Estomo; Hotmaulina Sihotang
Al Jahiz Vol 6 No 2 (2025): Al-Jahiz: Journal of Biology Education Research, July-December 2025
Publisher : Faculty of Tarbiyah and Teacher Training UIN Jurai Siwo, Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32332/al-jahiz.v6i2.10933

Abstract

Prospective science teachers must master pedagogical knowledge (PK) and content knowledge (CK), commonly referred to as Pedagogical Content Knowledge (PCK), before entering the teaching profession. PCK is essential professional knowledge that supports effective science teaching. This study aims to analyze the PCK readiness of prospective science teachers in Indonesia and the Philippines, with a focus on the CK and PK competencies required for teaching in the ASEAN context. The study employed a mixed-methods approach. Survey data were collected from 110 prospective science teachers undertaking field teaching practice in schools in Indonesia and the Philippines. In addition, in-depth interviews were conducted with 12 participants, consisting of six prospective teachers from each country. The data focused on participants’ understanding and preparation related to pedagogical skills and science subject matter. The results indicate that the overall PCK level of prospective science teachers falls within the “moderately ready” category. However, the proportion of participants classified as “ready” remains relatively low, ranging from 44.9% to 58.5%. These findings suggest a need for strengthening both PK and CK among prospective science teachers. Enhancing PK can be achieved through additional pedagogical education and targeted training programs to improve teaching skills. Meanwhile, improving CK can be supported by providing more specialized science content courses aligned with school curricula prior to teaching practice. PCK readiness plays a crucial role in supporting sustainable development. Beyond integrating pedagogy and content, PCK enables prospective teachers to effectively convey scientific concepts related to sustainability issues: climate change, natural resource conservation, environmentally friendly technologies.
TRENDS IN WEB BASED LEARNING ISSUES IN MATHEMATICS EDUCATION: A BIBLIOMETRIC ANALYSIS Stevi Natalia
International Journal of Teaching and Learning Vol. 1 No. 3 (2023): International Journal of Teaching and Learning (INJOTEL)
Publisher : Adisam Publisher

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

Abstract

This paper aims to provide an overview of trend issues regarding writings related to web-based learning (WBL) in the scope of mathematics education. This paper comes from 51 writings taken from the Scopus data base for the last 10 years, namely 2013-2023. The method used is bibliometric analysis using the help of Vosviewer and Mendeley. Based on the results of this paper study, it was found that writing about WBL in mathematics education is still low. There were 26 participating countries but the largest country, the United States, only produced 13 writings. In addition, collaboration between countries is still very low. Not only the linkage between countries, the relationship between keywords and WBL in mathematics education is also still few and tenuous. The keywords that are rarely used in writing related to web- based learning are about problem-based learning, high school, academic achievement, course design, flipped classroom, personalized learning, Moodle creativity, which are things that are closely related to learning approaches or methods. This is expected to be an opportunity and challenge in building novelty in future research.
Improving Mathematics Learning Outcomes Through Interactive Electronic Modules Based on Constructivism and Cone of Experience Bela Desy Natalia; Candra Ditasona; Stevi Natalia
Jurnal Riset Pendidikan dan Inovasi Pembelajaran Matematika Vol. 9 No. 2 (2025): JRPIPM DESEMBER 2025
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrpipm.v9n2.p227-241

Abstract

Indonesia is projected to achieve its golden era by 2045, necessitating significant adaptation and transformation in cultivating high-quality human resources through education. However, the persistent issue of low mathematics achievement and the predominance of Teacher-Centered Learning (TCL) approaches at SMAN 14 Jakarta highlights the need for educational innovation. This study aims to design and develop an interactive electronic module grounded in constructivist pedagogy by incorporating Edgar Dale's Cone of Experience to enhance students' proficiency in the topic of counting principles. Key challenges include limited conceptual comprehension among students, inadequately aligned learning resources, and assessment strategies that fail to reflect instructional objectives. Employing a Research and Development (RnD) methodology, this study adopts the ADDIE model (Analysis, Design, Development, Implementation, and Evaluation) for systematic module development. The findings demonstrate that the module exhibits excellent validity, with mean scores for content, media, and language validation of 3.6, 3.9, and 3.8, respectively. The module further demonstrates substantial effectiveness, achieving a 70% improvement rate based on the n-gain test, which highlights a statistically significant enhancement in students' learning outcomes. Additionally, the practicality assessment yields high practicality, with an r-value exceeding the r-table and a practicality percentage of 92%. This study concludes that the developed module is highly effective in improving mathematical achievement, exhibits practical utility in instructional settings, and possesses robust validity for educational implementation.
Technological Knowledge Among Mathematics Pre-Service Teachers in Indonesia and the Philippines: A Comparative Study Candra Ditasona; Santri Chintia Purba; Stevi Natalia; Hotmaulina Sihotang; Merley Junsay; Rene T Estomo
Brillo Journal Vol 4 No 2 (2025): Innovative Practices in Mathematics Teaching and Learning
Publisher : S&Co Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56773/bj.v4i2.111

Abstract

This comparative study investigates the Technological Knowledge (TK) readiness of mathematics pre-service teachers in Indonesia and the Philippines. Using a structured online survey, data were collected from 136 participants in Indonesia and 93 in the Philippines. TK readiness was categorized into three levels: Ready, Moderately Ready, and Not Ready, with demographic factors such as age, sex, and school type examined as potential influences. The results indicate that Indonesian pre-service teachers demonstrate higher TK readiness compared to their Filipino counterparts. No statistically significant associations were found between TK readiness and demographic variables in either country. The findings suggest a need for targeted interventions in teacher education programs to enhance TK competencies and ensure effective technology integration in mathematics classrooms. Implications for curriculum design and future research are discussed.
Co-Authors Bela Desy Natalia Candra Ditasona Candra Ditasona Candra Ditasona Dadang Juandi Daniel Jeremy Darhim Darhim Darhim Kusumah Ditasona, Candra Elferida Sormin HOTMAULINA SIHOTANG Hotmaulina Sihotang Kerdid Simbolon Lumbantoruan, Jitu Halomoan Lussy Midani Rizki Manogari Sianturi Merle L. Junsay Merley Junsay Nishabah Fadhelina Nurafni Purba, Santri Chintia Rene Estomo Rene T Estomo Richard Riska Septia Wahyuningtyas Risma Uly Manalu, Risma Uly Roni Priyanda Rontauli Sihotang Santri Chintia Purba Santri Chintia Purba Santri Chintia Purba Situmeang, Gita Meilisa Suparman Tan Hian Nio Tatang Herman, Tatang Yaya S. Kusumah Yaya S. Kusumah