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All Journal Jurnal Penelitian dan Pengembangan Pendidikan Jurnal S2 Pendidikan Matematika Journal on Mathematics Education (JME) Journal of the Indonesian Mathematical Society AKSIOMA: Jurnal Program Studi Pendidikan Matematika Journal of Mathematics and Mathematics Education Journal of Mathematics and Mathematics Education (JMME) Jurnal Pembelajaran Matematika JTAM (Jurnal Teori dan Aplikasi Matematika) Journal of Educational Management and Instruction (JEMIn) Himpunan: Jurnal Ilmiah Mahasiswa Pendidikan Matematika Journal on Mathematics Education Trigonometri : Jurnal Matematika
Tri Atmojo Kusmayadi
Prodi Magister Pendidikan Matematika, Pascasarjana, FKIP – UNS
Education Languange, Linguistic, Communication & Media Mathematics Social Sciences Other

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Transformation geometry in eleventh grade using digital manipulative batik activities Sahara, Sani; Dolk, Maarten; Hendriyanto, Agus; Kusmayadi, Tri Atmojo; Fitriana, Laila
Journal on Mathematics Education Vol. 15 No. 1 (2024): Journal on Mathematics Education
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jme.v15i1.pp55-78

Abstract

Learning Transformation Geometry (TG) needs a more informal approach to concern situational problems. This study aims to develop actionable knowledge of TG in the form of design related to context and yet general enough to use digital manipulative activities in new situations. We propose such knowledge in the form of conjectured Local Instructional Theory (LIT) in the framework of design research methodological framework. The designed learning activities were based on Realistic Mathematics Education (RME) principles and used batik as the context and van Hiele’s mode of geometric thought. In addition, the CorelDraw software is used as a tool to transform batik-making activities into a digital manipulative environment. The design consists of a pre-assessment and four learning activities. The data were analyzed retrospectively in accordance with the HLT. The analysis of the data described above and the justification of the processes during the teaching experiment indicate a compelling trajectory for students learning transformation geometry for this specific context and the prospect for future studies.
The Ability Of Mathematical Representation On Junior High School Students In Rectangular And Triangle Based On Gender Azizah, Annisa Nur; Kusmayadi, Tri Atmojo; Fitriana, Laila; Nataliliana, Claireza; Hermansyah, Beny
Trigonometri: Jurnal Matematika Vol. 1 No. 1 (2024): Edisi Januari
Publisher : Lppm Universitas Nurul Hud

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30599/trigonometri.v1i1.3258

Abstract

The ability of representation mathematical is an ability to express or model the mathematical idea into other forms such as words, pictures, and symbols. A study on the ability of mathematics representation is required for the students; therefore, they can express their idea easily by interpreting their thought relating to mathematics problems. This research is a descriptive qualitative method which aimed to find out the description of student' ability of the mathematical representation on rectangular and triangle based on gender. The subjects of this research are 26 students of eight grades consisted of 11 female students and 15 male students. The technique of collecting data was done by using the test method and interview. The test instrument used is 6 essay tests. The data analysis technique is by analyzing the results of the test data. The research result showed that students' mathematical representation ability are categorized well enough. From the results of the data obtained, it can be concluded that the ability of mathematical representation for male students is evenly distributed because there are results for each category. As for the female students, the average has a high mathematical representation ability
Validity, Practicality, and Effectiveness of Ludo Cartesius Learning Media to Improve Understanding of Mathematical Concepts Sumadi, Iman Putra; Kusmayadi, Tri Atmojo; Fitriana, Laila
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 6, No 3 (2022): July
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jtam.v6i3.8477

Abstract

Abstract mathematics learning requires media in outlining the material so that it can be well received by students. Media can help students understand and recall explanations from the teacher and test students' understanding more deeply. This research was conducted with the aim of knowing the validity of Ludo Cartesius' learning media to improve understanding of mathematical concepts in class VIII students at junior high school. This research will apply development research design with ADDIE approach developed by Robert Maribe Brach. The ADDIE stages include analysis, design, development, implementation, and evaluation. The Population in this study were all eighth grade students at junior high school. The research sample was 27 students who were taken randomly using cluster random sampling technique. The instruments used include media expert assessment sheets, material expert assessments, student and teacher response questionnaires, as well as pretest and posttest understanding of mathematical concepts. The average value of media experts from the three validators of Dokar's media is 95.61. The average value of media experts from the three validators of Dokar's media is 92.36. The results showed that the Dokar media was categorized as "very valid" in terms of media experts and material experts and this media was suitable for use in class VIII students at junior high school. Dokar media is classified as practical media based on the average percentage of student and teacher responses, namely 86.23% and 85.83%. Dokar media is an effective medium based on the t-test (paired sample t-test) p value (0.000)<α (0.05) so that the posttest score is better than the pretest.
Co-Authors A.A. Ketut Agung Cahyawan W Abdul Aziz Abdul Ghofur Abdul Razak Agus Darmawan Ambar Nurhayati Anggrahini Anggrahini Arianti Puspita Dewi Arinta Rara Kirana Asip Cakra Buana, Asip Cakra Atik Fitriya N author Ari Suningsih Azizah, Annisa Nur Budi Usodo Desi Gita Andriani Dewi Kurniasari, Dewi Dian N Safitri Dian Panji Wicaksono Dwi A, Yuridis Madyarsa Dwi Yuni Pramugarini Eli Widoyo Retno Endah Wulantina, Endah Farah Umami Farida Nurhasanah Fatmawati, Ulya Fauzi Mulyatna Ferri Ardianzah Fida Rahmantika Hadi, Fida Rahmantika Fina Hanifa Hidayati Fitriana, Laila Frasetyana, Anita Diah Gatut Iswahyudi Habib Ratu Perwira Negara Hafidh Jauhari Hendriyanto, Agus Hermansyah, Beny Hidayat, Edisut Taufik Iim Marfuah Ika Wulandari Imam Sujadi Indra Kurniawan Irma Ayuwanti Juitaning Mustika Juliana Nasution KOMARUDIN Labiba Zahra, Labiba Linda Sunarya Lingga Nico Pradana Maarten Dolk, Maarten Mardiyana Mardiyana MIFTACHUL ANAS Mishbahul Huda, Mishbahul Muhtarom Nanndo Yannuansa, Nanndo Naraswari, Titania Putri Nataliliana, Claireza Nelly Indriastuti P Nina Nurmasari Nindia Elisie Anggraini Nunung Juwariah, Nunung Nur Anida Laila Nurmalitasari Nurmalitasari Nurul Hidayati Shaliha, Nurul Hidayati Ony Syaiful Rizal, Ony Syaiful Puput Suriyah Putri, Saskia Rizkiana Rahayu Sri W Retno Sari Riyadi Riyadi Rosa Rosdiana Retno H Sahara, Sani Sri Indayani, Sri Sri Kuntari Sukowiyono Sukowiyono Sumadi, Iman Putra Supriyatin Supriyatin Susmono Susmono Suyono Suyono Tanti Listiani, Tanti Tri Yuliana Tunjung Genarsih, Tunjung Ummi Rosyidah, Ummi Wahyu Astuti Budi Wahyu Nofiansyah, Wahyu Wahyumiarti Wahyumiarti, Wahyumiarti Widi Lestari Winarno, Bowo Yekti Putri Kusumaningtyas Zara Mertiana RZ