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All Journal Jurnal Riset Pendidikan Matematika AKSIOMA: Jurnal Program Studi Pendidikan Matematika Transformasi: Jurnal Pengabdian Masyarakat Journal of Research and Advances in Mathematics Education JIPMat (Jurnal Ilmiah Pendidikan Matematika) HISTOGRAM: Jurnal Pendidikan Matematika Resona : Jurnal Ilmiah Pengabdian Masyarakat Jurnal SOLMA Indiktika : Jurnal Inovasi Pendidikan Matematika Teorema: Teori dan Riset Matematika Jurnal Cendekia : Jurnal Pendidikan Matematika Jurnal Basicedu Journal of Education Action Research M A T H L I N E : Jurnal Matematika dan Pendidikan Matematika Indonesian Journal of Community Services JPMI (Jurnal Pembelajaran Matematika Inovatif) Jurnal Riset Pendidikan dan Inovasi Pembelajaran Matematika (JRPIPM) Ihsan: Jurnal Pengabdian Masyarakat Buletin Literasi Budaya Sekolah Buletin Pengembangan Perangkat Pembelajaran Prima Abdika: Jurnal Pengabdian Masyarakat IJORER : International Journal of Recent Educational Research FARABI: Jurnal Matematika dan Pendidikan Matematika Proceeding ISETH (International Summit on Science, Technology, and Humanity) Jurnal Basicedu Prosiding University Research Colloquium Prosiding Konferensi Nasional Penelitian Matematika dan Pembelajarannya Jurnal Pengabdian Barelang Transformasi Masyarakat : Jurnal Inovasi Sosial dan Pengabdian Jurnal Pengabdian Masyarakat Mentari Jurnal Pengabdian Masyarakat Wadah Publikasi Cendekia Indonesian Journal on Learning and Advanced Education (IJOLAE) ALKHIDMAH: Jurnal Pengabdian dan Kemitraan Masyarakat
Christina Kartika Sari
Universitas Muhammadiyah Surakarta
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Medicine & Pharmacology Public Health Social Sciences Other

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Apakah Discovery Learning dapat Meningkatkan Keterampilan Komunikasi Matematis Siswa? Aprilia Saputri Riski Pratiwi; Christina Kartika Sari; Bani Amin Burhanudin
FARABI: Jurnal Matematika dan Pendidikan Matematika Vol 7 No 1 (2024): FARABI: Jurnal Matematika dan Pendidikan Matematika
Publisher : Program Studi Pendidikan Matematika FKIP UNIVA Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47662/farabi.v7i1.710

Abstract

To face the Information and Communication Technology (ICT) Era, students need to master 21st century skills. One of them is mathematical communication skills. It is very important for students to master mathematical communication skills because it will help them connect ideas and concepts with mathematical symbols. This research aims to improve mathematical communication skills through the discovery learning model. This research is classroom action research (PTK) which was carried out in three steps, namely pre-cycle, cycle 1, and cycle 2. The research data was collected through tests and observations. The data analysis techniques used include data reduction, data presentation, and concluding. The PTK results show that the discovery learning model can improve students' mathematical communication skills in geometric transformation material. This is proven by obtaining a percentage result of 85% in mathematical communication skills, the indicator of presenting mathematical information or ideas with other forms of representation, and the indicator of composing arguments in solving mathematical problems in the last cycle phase. Apart from that, there was an increase in indicators of analyzing and evaluating mathematical thinking in mathematical communication by 75%.
Dari Konsep Abstrak ke Visual Interaktif: Penguatan Kompetensi Guru dalam Integrasi GeoGebra dan PhET dalam Pembelajaran Matematika Muhamad Toyib; Adi Nurcahyo; Christina Kartika Sari; Isnaeni Umi Machromah; Sri Rejeki; Rini Setyaningsih; Nida Sri Utami
Jurnal Pengabdian Masyarakat Mentari Vol. 2 No. 7 (2026): Februari
Publisher : Amirul Bangun Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59837/jpmm.v2i7.235

Abstract

Perubahan paradigma pembelajaran menuntut guru memberikan pengalaman belajar siswa melalui integrasi teknologi dalam pembelajaran matematika. Teknologi seharusnya tidak sekedar sebagai media presentasi, tapi mampu mendukung konstruksi pengetahuan siswa, termasuk untuk konten matematika yang abstrak. Namun, kompetensi guru yang beragam dalam pemanfataan teknologi dan berbagai kendala lainnya mengakibatkan guru belum optimal dalam mengintegrasikan teknologi di kelas matematika. Kegitan ini berupaya menguatkan kompetensi guru dalam integrasi teknologi dengan lebih optimal melalui GeoGebra Classroom yang dan simulasi ready-to-use melalui PhET. Kegiatan berupa pelatihan kepada guru matematika SMA/SMK/MA se-Kabupaten Purwodadi dilaksanakan secara luring melalui participant active learning. Dari hasil evaluasi, guru merasa lebih percaya diri dalam mengintegrasikan teknologi, serta memiliki ide dan pengetahuan baru dalam pemanfaatan teknologi dalam pembe;ajaran matematika. Guru juga merasakan manfaat pelatihan, diantaranya peningkatan pengetahuan dan wawasan profesional guru, serta dukungan pengembangan perangkat pembelajaran.
Students' Critical Thinking Skills In Solving Hots-Oriented Numeracy Problems Putri Nur Habibah; Christina Kartika Sari
Mathline : Jurnal Matematika dan Pendidikan Matematika Vol. 10 No. 2 (2025): Mathline : Jurnal Matematika dan Pendidikan Matematika
Publisher : Universitas Wiralodra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31943/mathline.v10i2.888

Abstract

Critical thinking skills are the expected outcome of the student learning process and are a means to support student growth and development. This study aims to present the results of the analysis of the critical thinking ability process of grade X students with high, medium, and low initial abilities in solving HOTS-oriented numeracy problems on the Three-Variable Linear Equation System material and to determine students' critical thinking abilities in each critical thinking indicator. HOTS-oriented numeracy problems are numeracy problems designed to develop students' high-level thinking skills. These questions require students to analyze, evaluate, and create solutions based on deep understanding. The type of research used in this study is qualitative research with a descriptive approach. The subjects of this study were six students with varying initial abilities. Sampling in this study used random samling technique. Data collection techniques were carried out through tests, interviews, and documentation. The results and conclusions of this study showed a relationship between student abilities and the level of critical thinking indicators. Students with high initial abilities tend to be able to meet all critical thinking indicators, while students with moderate and low initial abilities experience various obstacles in several aspects.
Some Properties of M-Accretive Operators in Normed Spaces Christina Kartika Sari
Proceeding ISETH (International Summit on Science, Technology, and Humanity) 2015: Proceeding ISETH (International Conference on Science, Technology, and Humanity)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/iseth.2393

Abstract

Multivalued mapping in normed space has been extensively studied in Mathematical analysis. One example of multivalued mapping is normalized duality mapping. This mapping leads us to another example of multivalued operator, named accretive operator, which is also a multivalued operator. This study was aimed to examine the basic concepts of accretive and maccretive operator. Furthermore, discussion on some properties of accretive and m-accretive operator was provided.
Co-Authors 'Aini, Hanifa Nur Abidin, Nur Lailatul Fitriyah Adi Nurcahyo Adminanti, Risma Afifah Choirul Chotimah Alfianza Wijaya Kusuma Aliana Iksanti Ana Muslihatun Annisa Swastika Antok Aryuana Aprilia Saputri Riski Pratiwi Aryuana, Antok Asyfaini, Siti Sa'diyah Agung Azizah, Yuliana Amanda Nur Bani Amin Burhanudin Budi Murtiyasa Burhanudin, Bani Amin Citra Maharani Ainur Dwiyani, Endang Dyah Ratri Aryuna Eka Nurhayati Darmaningsih Erfin Uswatun Nisa' Faradita, Anna Nabila Fatmasari, Lina Wahyu Sri Fitri Anggi Widyani Fitri Wulandari Hanifah, Nisa Noventya Idris Harta Irma Yuliana Isnaeni Umi Machromah Khairunnisa, Danik Martha Khishaaluhussaniyyati, Mudrikah Khofifah Titan Palupi Kholid, Muhammad Nur Kuncoro Adi Saputro Kusumawati Dwiningsih Lina Wahyu Sri Fatmasari Lutfianisa Cahyaningtyas M. Noor Kholid M. Noor Kholid Masduki Maulana, Mohammad Rifki Mega Eriska Rosaria Purnomo Meladia Salsabila Ulfah Melinia Astri Fitrianingrum Mohamad Waluyo Mohammad Rifki Maulana Muhammad Noor Kholid Naufal Ishartono Nida Sri Utami Nida Sri Utami Nugroho, Afifah Hilmia Nuqthy Faiziyah Nur Lailatul Fitriyah Abidin Nur Setiyaningrum Nurmalia, Navilla Rachma Phaosan Jehwae Phaosan Jehwae Pramesti, Hardita Arum Pratiwi, Aprilia Saputri Riski Putri Nur Habibah Ramadhani, Noti Armyta Rangga Narandera La Hasaleh Khaimmudin Retno Palupi Ridhy Nizar Fijatullah Rifqi, Faizal Rini Setyaningsih Rini Setyaningsih Rita Pramujiyanti Khotimah Sapto Aji Nugroho Saputro, Kuncoro Adi Sari, Dwi Nur Vita Sintya, Gina Siti Wulandari Sri Rejeki Sri Rejeki suhendar, uki Sutama Sutopo Sutopo Sutopo Sutopo SW Winarsi Syahdana, Farah Lafas Tika Andriani Toyib, Muhamad Winarsi, SW Wulan Galuh Rahma Perwita Yusticia Nurrohmah Fachrunnisa