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Joko Soebagyo, Joko

Universitas Muhammadiyah Prof Dr Hamka

Author-ID : 548085

Religion Agriculture, Biological Sciences & Forestry Arts Humanities Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Mathematics Mechanical Engineering Physics Social Sciences Other

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ANALISIS KESULITAN SISWA MENYELESAIKAN SOAL OLIMPIADE MATEMATIKA SMP Sahroni, Ade; Soebagyo, Joko
International Journal of Progressive Mathematics Education Vol. 4 No. 1 (2024)
Publisher : Universitas Muhammadiyah Prof. DR. HAMKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/ijopme.v4i1.11947

This study aims to find out the description of students' difficulties in solving math olympiad questions at SMP Negeri 2 Muaragembong. This research is a descriptive study with a qualitative approach designed to find out the description of students' difficulties in solving Olympic questions. The data analysis techniques used are data reduction, data presentation, and drawing conclusions. Based on the results of the study, it was stated that the difficulties in solving Olympic questions consisted of four types of difficulty components, namely conceptual difficulties, principle difficulties, information difficulties and arithmetical difficulties. Internal factors include students' lack of interest in learning mathematics, especially in linear programming material, study routines, and lack of motivation to learn. While external factors include family and school environment. Efforts that can be made to reduce students' difficulties in solving Olympic questions based on the difficulties experienced and the causative factors behind them include: providing a better understanding to students, students actively asking questions, and using learning media

Rancang Bangun Aplikasi Diagnosa Self Efficacy Ningrum, Fitria Cahya; Soebagyo, Joko
International Journal of Progressive Mathematics Education Vol. 3 No. 2 (2023)
Publisher : Universitas Muhammadiyah Prof. DR. HAMKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/ijopme.v3i2.11950

Mathematical self-efficacy is a person's self-confidence in mathematics. The perceived ability of students towards mathematics lessons provides the right action in solving any math problems or real life in general. Diagnosing the level of self-efficacy can be done using the help of an application. Using a self-efficacy diagnostic application is the same as consulting an expert. The type of research conducted is Research and Development (R&D). The research method uses the ADDIE stages which include the analysis, design, development and implementation stages. The results of the study revealed that the media expert's average score was 4.05 (decent). Students' positive response to the self- efficacy diagnostic application developed was 3.5 or 85% which was classified as very good. So the self-efficacy diagnostic application can be used as an alternative to determine the level of students' self-efficacy towards mathematics

Investigations into Whiteboard Fox's Use in Mathematics Learning Accommodates 21st Century Skills Joko Soebagyo; Ghina Rizki Amalia
Jurnal Pendidikan MIPA Vol 23, No 4 (2022): Jurnal Pendidikan MIPA
Publisher : FKIP Universitas Lampung

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21st century skills should ideally be able to provide a foundation to today's learning. The purpose of this study intends to investigate the use of whiteboard fox in mathematics learning that accommodates 21st century skills. Qualitative research methods with case study types are used to uncover 21st century skills in mathematics learning using whiteboard fox. The research site is located in one of the North Jakarta State High Schools. Purposive sampling techniques were used to answer research questions in which out of 31 students 10 students were selected who were assumed to be able to provide saturated information as well as a primary data source. Data collection techniques use structured interviews with reference to 21st century skill indicators in the context of the use of whiteboard fox in mathematics learning. Data were analyzed using the 2022 version of MAXQDA through coding, sub-coding, in-vivo and MAXMaps visualization processes. The results showed various aspects that emerged in mathematics learning using whiteboard fox related to 21st century skills. Keywords: whiteboard fox, 21st century skills, math learning. DOI: http://dx.doi.org/10.23960/jpmipa/v23i4.pp1644-1664

Content Analysis of Al-Islam and Kemuhammadiyahan Values on Multivariable Calculus Materials Joko Soebagyo; Dzulhijjah Atdina Putri; Nikita Dewi
Jurnal Pendidikan MIPA Vol 23, No 3 (2022): Jurnal Pendidikan MIPA
Publisher : FKIP Universitas Lampung

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The purpose of this research is to build a category of vector field material in Multivariable Calculus learning into the values of Al Islam and Muhammadiyah. The content analysis method uses MaxQDA to code the terms that emerge from the interview texts generated by the participants related to the intersection of the two subjects. The selection of participants is important in order to avoid bias in the description of the interview. Participants were selected 5 out of 31 students based on their knowledge of Multivariable Calculus material and experience in participating in organizational activities of the Muhammadiyah Student Association and the Orientation of Islamic Fundamentals. The results showed that there were three key categories, namely, death, hard work, and brotherhood. Since the vector principle is the same as the beginning of life and the final destination of a person, vector material is closely related to death. Likewise, integral material has a connection with hard work because the principle of line integral can be seen in line with the efforts made by someone. The vector field material is related to the theme of brotherhood because the principle of the vector field is in groups that can be seen as a collection of people. Keywords: vector field, islam, muhammadiyah, multivariable calculus. DOI: http://dx.doi.org/10.23960/jpmipa/v23i3.pp751-764

Android-Based Mathematics Learning Media Development Research: A Bibliometric Analysis using VosViewer Joko Soebagyo; Lusiana Nur Maghfiroh
Jurnal Pendidikan MIPA Vol 23, No 2 (2022): Jurnal Pendidikan MIPA
Publisher : FKIP Universitas Lampung

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The purpose of this research is to determine the title and abstract about Development Of Android Mathematics in 2017-2022. The research data is taken from articles published online through Google Scholar with the keywords development of mathematics. Methods Data collection is done by checking and recording all data information about the number of articles, citations, and authors. The analysis used is full counting in the VOSViewer application. The total number of articles sampled in this study were 1000 articles with the technique of analyzing the image results obtained from the VOSviewer application, including Network visualization, Overlay visualization, and Density visualization. By using VosViewer researchers can visualize several analyzes of a research that researchers want to do Keywords: bibliometrics, mathematics development, development of android mathematics. DOI: http://dx.doi.org/10.23960/jpmipa/v23i2.pp842-852

ANALISIS BIBLIOMETRIK PERAN BAHASA DALAM KOMUNIKASI PEMBELAJARAN MATEMATIKA TERHADAP HASIL BELAJAR PESERTA DIDIK Wulandari, Dyah Ayu; Soebagyo, Joko
Jurnal Mercumatika : Jurnal Penelitian Matematika dan Pendidikan Matematika Vol 8 No 2 (2024)
Publisher : Universitas Mercu Buana Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26486/jm.v8i2.2709

Mathematics is an abstract subject so it is considered a difficult subject for some students and students. Language is a human communication tool. The use of language that is well structured and precise will make it easier for the interlocutor to understand what is being conveyed, this also applies in learning. The level of students' understanding of the material presented by educators is the main factor that can affect student learning outcomes. The method used in this research is bibliometric analysis method. Bibliometric analysis is a research method used by researchers to find the widest possible information related to keywords in the research to be carried out. The objectives of this research are, among others: (1) To find out trends regarding language research in mathematics learning communication. (2) To find out the great opportunities for further research on the topic of language in mathematics learning communication. The researcher found that there have been many studies with the keyword “mathematics”, but there is still little research related to mathematics learning, mathematics outcomes and quality. This can be an opportunity for further research to conduct research on these three keywords.

Ethnomathematics exploration of Al-Barkah Great Mosque, Bekasi City, through geometry and transformational geometry learning Soebagyo, Joko; Luthfiyyah, Fadhilah Izzul
Indonesian Journal of Science and Mathematics Education Vol. 6 No. 2 (2023): Indonesian Journal of Science and Mathematics Education
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/ijsme.v6i2.17179

Ethnomathematics integrates cultural elements into mathematics learning, fostering students' conceptual understanding while preserving cultural heritage. Ethnomathematics in religious architecture offers a unique perspective on the relationship between mathematical concepts and cultural values. This study aims to explore the ethnomathematical aspects of the Al-Barkah Great Mosque in Bekasi by analyzing its symbolic and geometric elements. A qualitative research approach with a realist ethnographic method was employed, incorporating interviews, observations, documentation, and literature reviews to examine the mathematical structures embedded in the mosque’s architectural design. The findings reveal that the Al-Barkah Great Mosque exhibits various geometric shapes and transformation elements, including reflection, rotation, and translation, which hold both cultural and spiritual significance. These mathematical features serve as concrete representations that enhance students' comprehension of geometric concepts. The study concludes that integrating ethnomathematics into geometry learning provides an engaging and meaningful context for students, connecting mathematical theories with real-world cultural artifacts. The implications of this study include enriching geometry instruction through cultural perspectives and providing educators with culturally relevant resources to enhance student learning and appreciation of mathematical concepts.

EFEKTIVITAS MEDIA FLASHCARD TERHADAP KEMAMPUAN KOGNITIF SISWA DALAM MATERI SEGI BANYAK MENGGUNAKAN MODEL PBL KELAS 4 SDIT GLOBAL INSAN MADANI Zahra, Azizah; Soebagyo, Joko
AL JABAR: Jurnal Pendidikan dan Pembelajaran Matematika Vol. 4 No. 2 (2025): Juli
Publisher : LPPM Institut Ahmad Dahlan Probolinggo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46773/aljabar.v4i2.1887

Analyzing the efficiency of using flashcard media on students' thinking skills related to the topic of polygons using the Problem-Based Learning (PBL) model in class IV SDIT Global Insan Madani. The basis of this study began with the low learning achievement of students in mathematics, especially in geometry material, due to monotonous teaching methods and minimal variation in learning media. The method applied in this study is the One Group Pretest-Posttest Design, involving 24 students as samples. The findings of the study indicate that the use of flashcard media in mathematics learning with the PBL approach can significantly improve students' cognitive abilities. Flashcards play a role in visualizing concepts and facilitating understanding of the material, while PBL increases students' active participation in solving problems. The combination of these two methods has proven effective in deepening understanding of the concept of polygons and increasing students' learning motivation. This study recommends the use of flashcard media as an innovation in teaching to improve mathematics learning outcomes at the elementary school level.

Eksplorasi Etnomatematika pada Museum Gedung Juang 45 Anggraini, Fadhilah dwi; Soebagyo, Joko
Jurnal Pendidikan Matematika : Judika Education Vol. 8 No. 3 (2025): Jurnal Pendidikan Matematika:Judika Education
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31539/judika.v8i3.15495

The purpose of this research is to explore the concept of school mathematics in the museum's geometry building to fill the lack of learning resources so that it can be used as a reference for learning. The method in this study uses an ethnographic approach. Data were obtained through thematic analysis, this analysis, and narrative analysis. The results of the study obtained mathematical concepts, namely spatial shapes such as blocks and cone then there are geometric transformations such as translation, reflection, and rotation, the concept of flat shapes such as circle, square and, rectangle. In conclusion, the exploration of the Gedung Juang 45 museum in Bekasi Regency can be a medium for ethnomathematics-based mathematics learning that is contextual and interesting, in line with the three elements of deep learning, namely awareness, meaningful, and fun. Keywords: Ethnomathematics, Gedung Juang 45, Museum

How math happens at home: A Rasch-based validation of the home mathematics environment scale in early childhood Nugraha, Adi Cahya; Rachmadani, Ira; Mardiana; Refiyanti, Nur Alifa Deviar; Soebagyo, Joko
Jurnal Elemen Vol 11 No 3 (2025): July
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/jel.v11i3.30220

Preschool education is important for developing children’s social and cognitive skills, with early mathematical ability being a strong predictor of future success. This study evaluated the psychometric properties of the Preschool Home Mathematics Questionnaire (PHMQ) using Rasch Model Analysis. A total of 95 parents and guardians of preschool-aged children participated in the study. A total of 37 Likert-scale items were analysed. The results showed excellent person reliability (0.93) and item reliability (0.96), indicating strong consistency and well-targeted item difficulty. Of the 37 items, 32 were valid according to the Rasch fit criteria, while five items (Q13, Q15, Q22, Q24, and Q26) showed misfit based on the Outfit mean square (MNSQ), Z-standard (ZSTD), and PTMEA-CORR. The Likert scale functioned well with ordered thresholds and smooth transitions between categories. The unidimensionality test confirmed that the PHMQ measures a single construct, with 44.1% of the variance explained and only 12.8% unexplained in the first contrast. While the PHMQ shows good validity and reliability, this study focused only on basic Rasch validation. Future research should explore differential item functioning (DIF), item bias, and long-term stability to further improve this instrument and support its use in different settings.

Co-Authors Abdul Muchlis Adinda Putri Salsabilah Agustin, Siti Sundari Ahmad Septiana Aida Ar Rahmah Alaya Diwimuri Alifah Noer Anggraini, Fadhilah dwi ANWARI, AHMAD MUMTAZ Arifin Karim Arifin Karim Atikah Taqiyyah Ayu Setyawati Ayu Wulandari Azhar, Ervin Desiana Desiana Devie Nursaidah Putri Dinda Haniyah Dyah Ayu Wulandari Dzulhijjah Atdina Putri Dzulhijjah Atdina Putri Edy Purwanto, Sigid Febbyana Ilwan Kajori Feby Fajriatur Rohmah Fitri Hidayani Ghina Rizki Amalia Hakim, Irsyad Malik Haniyah, Dinda Hasna Salsabilla Jati Haya, Aqiela Fadia Hidayani, Fitri Huri Suhendri Idha Novianti Ika Eryanti Ilham Imanie Amin Imay Kurniawan Imay Kurniawan Indah Tri Kusumawati Ishaq Nuriadin Istikharoh Istikharoh Jiddan Fakhri Sunni Karim, Arifin Khoerul Umam Leonard, Leonard Leonisa, Isnainia Lusiana Nur Maghfiroh Luthfiyyah, Fadhilah Izzul Ma'arif, Samsul MARDIANA Meila Asysyaffa Miftahul Jannah Anri Muchlis, Abdul Muhamad Wulidasauma Ajinegara nia kurniasih Nia Kurniasih Nikita Dewi Nikita Dewi Ningrum, Fitria Cahya Nugraha, Adi Cahya Nur Ika Adila Rahmawati Rachmadani, Ira Rahma Yuliastuti Refiyanti, Nur Alifa Deviar Riska Fitriani Roslani Supinah Saamah Saamah Sahroni, Ade Salaamah Nur Mujahidah Salsabila, Sarah Aida Samsul Ma'arif Samsul Maarif Sarah Aida Salsabila Sigid Sigid Sigid Edy Purwanto Siti Sundari Agustin Sri Neviyanti Sarman Sugestiana Sugestiana Sugestiana Sugestiana Sugestiana, Sugestiana Sugi Sugi Sundari Agustin, Siti Vivied Eka Pratiwi Widya Saviraningrum Wildan Toyib Yana Yana, Yana Yani, Nur Fitri Zahra, Azizah

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