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All Journal Jurnal Konseling dan Pendidikan Jurnal Elemen PYTHAGORAS: Jurnal Program Studi Pendidikan Matematika Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan Al-Jabar : Jurnal Pendidikan Matematika KALAMATIKA Jurnal Pendidikan Matematika Jurnal Pengabdian Pada Masyarakat International Journal of Community Service Learning Symmetry: Pasundan Journal of Research in Mathematics Learning and Education Kognitif: Jurnal Riset HOTS Pendidikan Matematika Edumatica: Jurnal Pendidikan Matematika International Conference on Health Science, Green Economics, Educational Review and Technology (IHERT) JPLED Polyhedron International Journal in Mathematics Education Jurnal Pendidikan MIPA
Thesa Kandaga
Universitas Pasundan
Agriculture, Biological Sciences & Forestry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Social Sciences Other

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Abstraction level of van Hiele’s theory: Occurrence of side effects in GeoGebra integration Kandaga, Thesa; Novianti, Idha; Adnan, Mazlini
Jurnal Elemen Vol 11 No 1 (2025): January
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/jel.v11i1.26938

Abstract

One of the obstacles to teaching geometric transformation is the complex procedures that require a broad base of prerequisite knowledge. This complexity often leads students to focus on rote memorization and procedural calculations instead of understanding the underlying context. This study aims to overcome these challenges by developing a hypothetical learning trajectory (HLT) and using GeoGebra to enhance visualization and understanding. The case study involved ten university students in Indonesia who tackled the abstraction level in the Transformation, Isometries, and Reflection topics. The researchers analyzed students' worksheets, activity observations, and learning obstacle tests to extract their geometric thinking. Qualitative analysis of the data revealed that seven out of ten participants met three of the four abstraction level indicators. The use of GeoGebra in HLT helped overcome epistemological obstacles. However, integrating GeoGebra into the HLT introduced a new issue: a GeoGebra-centric habit characterized by an excessive dependence on GeoGebra in solving geometric transformation problems.
Community Partnership Program (CPP/PKM) High School Teachers in Bandung City and District in E-Learning Based Data Collection Activities Saputra, Jusep; Kandaga, Thesa; Nurcahyo, Anggoro Ari
International Journal of Community Service Learning Vol. 3 No. 1 (2019): February 2019
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (615.857 KB) | DOI: 10.23887/ijcsl.v3i1.17507

Abstract

The purpose of the Subject Teachers Consultation (STC/MGMP) will be if the teachers are skilled, accustomed and able to develop various activities that are able to support teacher competencies. One of the activities carried out was to participate in the Community Partnership Program (PKM) program development activities with LPTKs such as Pasundan University. The STC included in the Community Partnership Program (CPP/PKM) is the Bandung and City Mathematics STC. Problems with both partners are: (1) Some teachers do not know SPSS and its benefits in research, (2) Understanding of some teachers in collecting data according to the formulation of research problems is still lacking, (3) Some teachers do not know e-learning applications that use video conference. This problem has an impact on the inhibition of research and an increase in the rank of teachers. Approach methods used to overcome problems with training, mentoring, and mentoring. The two partners' solution-resolution procedures will be carried out by the team as follows: (1) Training, mentoring and mentoring in using SPSS features, (2) Training in using e-learning applications (3) Training, mentoring, and mentoring in collect data according to the formulation of research problems. CPP was attended by 14 Mathematics Teachers from the City of Bandung, and 17 Mathematics Teachers from Bandung Regency who were each from the Bandung City and Regency STC. The first meeting resulted in the following conclusions: (1) The quality of CPP in formulating problems, testing instruments, using SPSS features, and video conferencing conducted was very good, (2) The ability of teachers to understand, master, and train in making either test or non-test research instruments are in a pretty good category, (3) the teacher's ability to input data according to data or the scale of the data is in a good category, (4) The teacher's ability to use video conferencing to get guidance and assistance in doing the work is in good category.
Analisis Tingkat Adopsi Artificial Intelligence di Universitas Terbuka dalam Kurva Inovasi Teknologi Kandaga, Thesa; Sugilar, Sugilar; Nurhayati, Suci; Osman, Zahir; Mohamad, Liana Binti
Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan Vol 10, No 4: APRIL 2025
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/jptpp.v10i4.25767

Abstract

Penelitian ini mengevaluasi tingkat adopsi Artificial Intelligence (AI) di kalangan dosen Universitas Terbuka (UT) menggunakan pendekatan mix method dengan analisis deskriptif. Populasi penelitian meliputi seluruh dosen UT, dengan 172 responden yang dipilih berdasarkan kesediaan berpartisipasi. Mengacu pada teori Diffusion of Innovations dari Rogers (2003), dosen dikelompokkan dalam kategori Innovators, Early Adopters, Early Majority, Late Majority, dan Laggards berdasarkan skor adoption rate. Hasil menunjukkan mayoritas dosen UT berada dalam kategori Early Majority (37%) dan Late Majority (32%), menunjukkan adopsi yang moderat terhadap AI. Sebagian kecil dosen masuk dalam kategori Innovators (1%) dan Early Adopters (15%), sementara 16% berada dalam kategori Laggards. Hambatan utama dalam adopsi AI meliputi keterbatasan pelatihan, kurangnya dukungan teknis, dan resistensi terhadap perubahan. Rekomendasi yang diusulkan mencakup strategi berbeda untuk setiap kategori pengguna, seperti pelatihan intensif untuk Late Majority dan dukungan fasilitas untuk Innovators. Implementasi AI yang lebih optimal diharapkan dapat meningkatkan efisiensi, kualitas pengajaran, serta inovasi dalam penelitian di UT, sehingga UT dapat memenuhi tuntutan pendidikan tinggi di era digital.
Analysis of Guru Penggerak Program: Teacher Satisfaction and Method Implementation Across Different Demographics Gusti, Valeria Yekti Kwasaning; Kandaga, Thesa; Nurhayati, Suci; Risnawati, Erna
Kognitif: Jurnal Riset HOTS Pendidikan Matematika Vol. 5 No. 1 (2025): January - March 2025
Publisher : Education and Talent Development Center Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/kognitif.v5i1.2815

Abstract

This study evaluates the impact of the "Guru Penggerak" program on teaching practices and participant satisfaction, focusing on educators from 36 cities across Indonesia. The program “Guru Penggerak”, initiated by the Indonesian Ministry of Education, empowers teachers to become leaders in educational transformation. It enhances pedagogical skills, leadership abilities, and the integration of local wisdom with global knowledge to develop reflective and innovative educators. This research examines the relationship between satisfaction levels and demographic factors—age, gender, and teaching experience—as well as the frequency of implementing learned methods. Participants (N = 119), predominantly female and experienced educators, rated program aspects, including content relevance, instructional quality, and overall satisfaction, using a Likert scale. Mean ratings ranged from 4.0 to 4.2, indicating a positive reception. Pearson correlation analysis assessed relationships between demographic factors, satisfaction, and implementation frequency. Results showed minimal correlations (age: r = -0.115, gender: r = -0.059, teaching experience: r = -0.006) for satisfaction and weak correlations (age: r = 0.066, gender: r = -0.062, teaching experience: r = 0.127) for implementation frequency, suggesting demographic factors had little influence. Findings indicate the program is well-received across diverse demographics, reinforcing its broad effectiveness. Future research should incorporate qualitative methods to explore additional factors, such as school infrastructure and individual teaching styles, that may influence satisfaction and practical application. Identifying these factors will contribute to optimizing teacher development programs and enhancing their impact on Indonesia’s education system.
Penerapan Model Pembelajaran Time Token untuk Meningkatkan Kemampuan Pemahaman dan Disposisi Matematis Siswa SMA: Pembelajaran Time-Token: Pemahaman Matematis: Disposisi Matematis Thesa Kandaga
Edumatica : Jurnal Pendidikan Matematika Vol 7 No 1 (2017): Edumatica: Jurnal Pendidikan Matematika (April 2017)
Publisher : Department of Mathematics Education, Faculty of Teacher Training and Education, Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (578.881 KB) | DOI: 10.22437/edumatica.v7i01.3628

Abstract

Proses pembelajaran matematika yang ada selama ini cenderung kurang melibatkan siswa. Hal tersebut dipandang sebagai salah satu penyebab rendahnya pemahaman dan disposisi matematis, karena aktivitas dalam pembelajaran mencirikan disposisi dan pemahaman siswa. Salah satu model pembelajaran yang dipandang tepat untuk lebih banyak melibatkan siswa dalam pembelajaran adalah Model Pembelajaran Time-Token yang secara langsung meminta setiap siswa untuk terlibat dalam proses belajar dan lebih berkontribusi aktif di dalam kelas. Penelitian ini menggunakan desain kelompok kontrol pretes-posttes dengan maksud untuk memperoleh data secara tentang pengaruh pembelajaran Time-Token terhadap peningkatan kemampuan pemahaman dan disposisi matematis siswa. Populasi dalam penelitian ini adalah siswa kelas XI Sekolah Menengah Atas Negeri (SMAN) 1 Cisarua Bandung program Ilmu Pengetahuan Alam (IPA). Kelas eksperimen dan kelas kontrol dipilih secara acak berdasarkan kelas dari seluruh kelas di SMAN 1 Cisarua dengan mengambil dua kelas untuk menjadi kelas eksperimen dan kelas kontrol. Pengumpulan data pada penelitian ini diperoleh melalui Pretes untuk mengukur kemampuan awal siswa dan Posttes untuk mengukur kemampuan siswa setelah diberikan pembelajaran. Instrumen yang digunakan terdiri atas tes kemampuan pemahaman matematis dan kuisioner skala disposisi matematis yang telah memenuhi syarat validitas dan reliabilitasnya. Data hasil penelitian yang diperoleh kemudian diuji normalitas dan homogenitasnya untuk selanjutnya dilakukan pengujian rata-rata. Kesimpulan yang diperoleh dari penelitian ini: (1) Siswa yang mendapatkan materi dengan model pembelajaran Time-Token memiliki penngkatan kemampuan pemahaman matematis yang lebih baik dibandingkan siswa yang mendapatkan materi dengan pembelajaran konvensional. (2) Peningkatan disposisi matematis siswa yang mendapatkan materi dengan model pembelajaran Time Token lebih baik dari pada siswa yang mendapatkan materi dengan pembelajaran konvensional. (3) Terdapat asosiasi/hubungan yang signifikan antara kemampuan pemahaman matematis dengan peningkatan disposisi matematis.
The Effect of Realistic Mathematics Approach on Emotional Intelligence and Mathematical Communication Ability of Grade V Students Andini, Putri; Hasratuddin; Kandaga, Thesa
Journal of Practice Learning and Educational Development Vol. 5 No. 2 (2025): Journal of Practice Learning and Educational Development (JPLED)
Publisher : Global Action and Education for Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58737/jpled.v5i2.481

Abstract

This research method uses a quantitative approach and the type of research is a quasi-experiment. The research design used is a quasi-experiment with a 2 x 2 factorial with a 2-way analysis of variance (ANOVA) technique. This test validation sheet consists of three components, namely content, construction, and language use. The data analysis technique used in this study is the inferential statistical technique. Hypothesis testing in this study was carried out using the analysis of variance (ANOVA) test with a 2 x 3 test and a significance level of 0.05. Before the ANOVA test was carried out, the analysis requirements test was first carried out, namely the normality test and the data homogeneity test. This study is a quasi-experimental study by comparing the mathematical communication skills of students taught with a realistic mathematical approach compared to the mathematical communication skills of students taught with ordinary learning. In addition, this study also looks at the comparison of students' mathematical communication skills based on the level of emotional intelligence possessed by students, while the data on students' emotional intelligence was obtained through an emotional intelligence questionnaire given during the study.
Metaanalisis efektivitas pembelajaran berbantuan teknologi digital terhadap hasil belajar matematika Setiawan, Wahyu Heri; Sugilar, Sugilar; Kandaga, Thesa
PYTHAGORAS : Jurnal Program Studi Pendidikan Matematika Vol 14, No 1 (2025): PYTHAGORAS: Jurnal Program Studi Pendidikan Matematika
Publisher : UNIVERSITAS RIAU KEPULAUAN, BATAM, INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/pyth.v14i1.7555

Abstract

Berbagai studi tentang pembelajaran berbantuan teknologi digital terhadap hasil belajar matematika peserta didik telah diterbitkan dalam publikasi ilmiah. Banyak dari studi ini memiliki hasil yang berbeda. Studi metaanalisis ini dilakukan untuk mengevaluasi dampak keseluruhan dari penerapan pembelajaran berbantuan teknologi digital terhadap hasil belajar peserta didik dan untuk mengidentifikasi tingkat perbedaan yang ada di antara studi. Untuk memastikan studi yang relevan digunakan database Google Cendekia mencakup penelitian ini. Dengan memasukkan kata kunci yang telah ditentukan ke dalam database ini, ditemukan 3.460 artikel yang diterbitkan antara tahun 2015 sampai dengan 2024 yang diperiksa untuk tujuan penelitian. Terdapat 20 artikel memenuhi kriteria inklusi dan layak untuk analisis. Alat bantu analisis digunakan program Jeffreys's Amazing Statistics Program (JASP), dan indeks ukuran efek persamaan Hedges-g yang diperoleh didasarkan pada estimasi model efek acak. Hasil penelitian menunjukkan bahwa efek penerapan pembelajaran berbantuan teknologi digital terhadap hasil belajar matematika peserta didik adalah 1,474. Hasil ini menunjukkan bahwa pembelajaran berbantuan teknologi digital sangat efektif di Indonesia karena memiliki dampak positif yang signifikan dalam meningkatkan hasil belajar matematika peserta didik. Tiga variabel moderator digunakan untuk menilai tingkat variasi penelitian. Hasil menunjukkan bahwa dalam hal tahun penelitian, jenjang sekolah, dan jenis teknologi digital yang digunakan (p>0,05) menunjukkan tidak terdapat perbedaan yang signifikan terhadap ukuran efek penggunaan pembelajaran berbantuan teknologi digital terhadap hasil belajar matematika peserta didik.
Development of the sources of mathematics online learning self-efficacy scale (SMOLSES) for SDGs quality education Nurhayati, Suci; Kandaga, Thesa; Gusti, Valeria Yekti Kwasaning; Mohamad, Liana
Al-Jabar: Jurnal Pendidikan Matematika Vol 16 No 1 (2025): Al-Jabar: Jurnal Pendidikan Matematika
Publisher : Universitas Islam Raden Intan Lampung, INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/ajpm.v16i1.26653

Abstract

Background: The expansion of online learning in open and distance education poses new challenges in understanding students’ self-efficacy, particularly in mathematics, a subject that demands both cognitive engagement and emotional resilience. Existing instruments have not adequately captured the distinct sources of self-efficacy relevant to this setting, necessitating the development of a context-specific measurement scale Aim: This study aims to develop and validate the SMOLSES, an instrument designed to assess the sources of self-efficacy, mastery experience, vicarious experience, social persuasion, and physiological state in the context of online mathematics learning for distance education students. Method: The scale was developed using a questionnaire administered to 105 Mathematics Education students at Universitas Terbuka. Partial Least Squares analysis was used to evaluate the measurement and structural models. The results supported the reliability and validity of the scale, confirming 28 valid items across five constructs. Structural model analysis revealed that physiological state and social persuasion significantly predicted students' belief in their self-efficacy, while vicarious experience showed the strongest correlation with academic performance. Result: SMOLSES provides a reliable tool for diagnosing students’ readiness and guiding instructional design in online mathematics learning. The findings emphasize the importance of social and emotional factors in shaping self-efficacy and learning engagement, particularly in asynchronous environments where peer modeling and support mechanisms are critical. Conclusion: By addressing a critical measurement gap, this study contributes to advancing quality and inclusive education (SDG 4). SMOLSES can inform data driven interventions that enhance student engagement and achievement in open and distance learning settings.
Misconceptions on Interpreting and Modeling the Concept of Division Among Elementary School Teachers Krisnadi, Elang; Kandaga, Thesa; Adnan, Mazlini
Jurnal Pendidikan MIPA Vol 26, No 3 (2025): Jurnal Pendidikan MIPA
Publisher : FKIP Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpmipa.v26i3.pp1496-1514

Abstract

This study investigates the nature and extent of conceptual misconceptions held by elementary school teachers in interpreting and modeling the mathematical concept of division. Motivated by the recognition that students’ misunderstandings often originate from teachers’ inadequate conceptual grasp, particularly regarding the use of partitive and quotative models, this research addresses a critical gap in the literature on teachers' mathematical representations. Although division is a foundational concept in mathematics instruction, limited empirical research has explored how teachers misconstrue its meanings in classroom contexts. Employing a descriptive qualitative design within a multiple-case study framework, the study involved 80 fifth-grade teachers from four major Indonesian cities: Jakarta, Bandung, Yogyakarta, and Surabaya. Participants were selected through purposive sampling. Data were collected through classroom observations, semi-structured interviews, and lesson plan analysis. Thematic analysis was used to identify recurring patterns of misconception across instructional practices.  Findings in this study revealed misconceptions among many teachers in distinguishing between the partitive (repeated subtraction) and quotative (equal sharing) interpretations of division. This confusion results in the use of inappropriate, rigid, or overly simplified concrete models. The misconception distorts mathematical representations and contributes directly to the propagation of student misconceptions. The most prominent patterns occurred during story problem interpretation, where teachers struggled to match the semantic structure with the appropriate division model. These conceptual misconceptions not only distort instructional representations but also contribute to students' way of thinking. These findings highlight the urgent need for targeted professional development programs. Those would emphasize semantic analysis of word problems and the flexible use of multiple representations. Such interventions are essential to help teachers deliver instruction that fosters conceptual understanding beyond procedural fluency. Aligning teacher training with findings in this study may prevent the transfer of fundamental misconceptions to students and promote deeper mathematical thinking in early education contexts.    Keywords: misconceptions, interpretations, division, elementary school, teacher.
Pemahaman Konsep Matematika Siswa MTs dalam Model Discovery Learning Berbantuan Aplikasi Quizizz Kandaga, Thesa
Kognitif: Jurnal Riset HOTS Pendidikan Matematika Vol. 4 No. 1 (2024): January - March 2024
Publisher : Education and Talent Development Center Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/kognitif.v4i1.1221

Abstract

Penyebab rendahnya pemahaman konsep siswa adalah minimnya keterlibatan siswa dalam proses pembelajaran. Salah satu solusi yang ditawarkan adalah melalui penerapan model discovery learning berbantuan aplikasi quizizz. Tujuan penelitian ini adalah untuk mengetahui peningkatan kemampuan pemahaman konsep matematis siswa yang diajar melalui model discovery learning berbantuan aplikasi quizizz dengan siswa yang diajarkan melalui model pembelajaran konvensional. Jenis penelitian ini adalah penelitian eksperimen semu dengan desain penelitian non-equivalent control grup design. Subjek penelitian adalah siswa kelas VIII F MTs Negeri 2 Ciamis yang berjumlah 30 orang pada kelas eksperimen dan siswa kelas VIII D MTs Negeri 2 Ciamis yang berjumlah 30 orang pada kelas kontrol. Instrumen yang digunakan dalam penelitian ini adalah lembar tes kemampuan pemahaman konsep matematis berupa 7 soal berbentuk uraian. Teknik analisis data yang digunakan adalah statistika deskriptif dan inferensial dengan uji perbedaan dua rerata (uji-t). hasil penelitian menunjukkan bahwa peningkatan kemampuan pemahaman konsep matematis siswa yang diajarkan melalui model discovery learning berbantuan aplikasi quizizz lebih tinggi dibandingkan dengan siswa yang diajar melalui model pembelajaran konvensional.
Co-Authors Adnan, Mazlini Agus Dede Anggiana Anggoro Ari Nurcahyo Beni Yusepa Ginanjar Putra Dadang Juandi Darhim Darhim Darta Darta Darta, Darta Gusti, Valeria Yekti Kwasaning Hasratuddin Hermawan, Vevi Jusep Saputra, Jusep Krisnadi, Elang Mohamad, Liana Mohamad, Liana Binti Nia Gardenia Nida Amelya Al Fitriani Nida Aulia Pangesti Limbangan Novianti, Idha Nurcahyo, Anggoro Ari Nurcahyo, Anggoro Ari Osman, Zahir Putri Andini, Putri Risnawati, Erna Rizky Rosjanuardi Setiawan, Wahyu Heri Sri Agustini Dalimunthe Suci Nurhayati Suci Nurhayati Sugilar, Sugilar Taufiqulloh Dahlan