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All Journal Pythagoras: Jurnal Matematika dan Pendidikan Matematika JPPM (JURNAL PENELITIAN DAN PEMBELAJARAN MATEMATIKA) Math Didactic: Jurnal Pendidikan Matematika Formatif: Jurnal Ilmiah Pendidikan MIPA Teorema: Teori dan Riset Matematika Journal on Education EIGEN MATHEMATICS JOURNAL Mandalika Mathematics and Educations Journal Jurnal Riset Pembelajaran Matematika Sekolah Jurnal Eurekamatika Prosiding Seminar Nasional Pengabdian Kepada Masyarakat Journal of Medives: Journal of Mathematics Education IKIP Veteran Semarang Jurnal Pengabdian KOLABORATIF JMT (Jurnal Matematika dan Terapan) SAP (Susunan Artikel Pendidikan)
Ambarwati, Lukita
Department Of Mathematics, Universitas Negeri Jakarta
Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Environmental Science Industrial & Manufacturing Engineering Mathematics Public Health Social Sciences Other

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Solusi Semi Analitik Persamaan Burgers Menggunakan Metode Dekomposisi Adomian Laplace Brinda Sari; Lukita Ambarwati; Eti Dwi Wiraningsih
JMT : Jurnal Matematika dan Terapan Vol 5 No 2 (2023): JMT (Jurnal Matematika dan Terapan)
Publisher : Program Studi Matematika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/jmt.5.2.2

Abstract

Burgers equation is a partial differential equation which has important rule in fluid mechanics. Because it has nonlinear terms, the exact solution is complicated to find. Therefore many methods have been developed to find the approximate solution that can estimate the exact solution. In this research, the Laplace Adomian decomposition method is applied to calculate the approximate solution of Burgers equation. The method is a semi-analytical method to resolve nonlinear differential equation. By the numerical simulation, we obtained a result that the approximate solution by this method can estimate the exact solution with the sum of absolute and relative error less than those using approximate solution obtained by the Adomian decomposition method without the use of Laplace transform. Therefore the Laplace Adomian decomposition method is more accurate than the Adomian decomposition method in order to estimate the exact solution of the Burgers equation.
ANALISIS KESALAHAN SISWA DALAM MENYELESAIKAN SOAL PROGRAM LINEAR TIPE HIGHER ORDER THINKING SKILLS DITINJAU DARI GAYA KOGNITIF Nurherdiati, Ratna; Ambarwati, Lukita; Meiliasari, Meiliasari
Jurnal Penelitian dan Pembelajaran Matematika Vol 16, No 2 (2023): JPPM (Jurnal Penelitian dan Pembelajaran Matematika) Volume 16 Nomor 2 Agustus
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/jppm.v16i2.21446

Abstract

Penelitian ini bertujuan untuk mendeskripsikan kesalahan-kesalahan yang dilakukan siswa dalam menyelesaikan soal program linear tipe HOTS serta mencari penyebab yang mempengaruhinya ditinjau dari gaya kognitif field dependent (FD) dan field independent (FI). Jenis penelitian ini adalah penelitian deskriptif kualitatif, dengan melakukan penelitian pada siswa kelas XI di Madrasah Aliyah Citra Cendekia Jakarta Selatan pada semester ganjil tahun pelajaran 2022/2023. Hasil penelitian ini yaitu siswa dengan gaya kognitif FD cenderung melakukan kesalahan membaca, kesalahan pemahaman, kesalahan transformasi, kesalahan keterampilan proses, dan kesalahan pengkodean. Sedangkan siswa dengan gaya kognitif FI melakukan kecenderungan kesalahan keterampilan proses dan kesalahan pengkodean. Penyebab siswa melakukan kesalahan antara lain karena terburu-buru, kurang teliti, kurang peka, kurang memahami soal, kekurangan waktu, terlalu lama memahami soal, lupa cara penyelesaian, dan bingung menghubungkan informasi untuk menyelesaian soal.  Kata kunci: Newman, Program Linear, HOTS, field dependent, field independent
Pelatihan Penggunaan Octave pada Pembelajaran Matematika untuk Guru-Guru SMA di Kabupaten Sukabumi Provinsi Jawa Barat Lukita Ambarwati; Devi Eka Wardani Meganingtyas; Leny Dhianti Haeruman; Jason Christiawan Widiaputera; Ananda Fitri Rahmawati
Jurnal Pengabdian KOLABORATIF Vol. 3 No. 1 (2025): January
Publisher : Faculty of Engineering, Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/jpk.v3i1.11060

Abstract

An important aspect that needs attention to support success in the learning process is the teacher's competency. One of the key competencies required by teachers is mastery of technology, which supports the development of TPACK (Technological Pedagogical Content Knowledge)-based learning. Additionally, mastery of technology can help develop learning media and serve as a learning aid. One of the software that can be used as an option for learning media is Octave. Octave is open-source software, allowing teachers to access it for free. It can be used as a medium/teaching tool to explain various mathematical concepts, such as functions, function limits, derivatives, integrals, and more. This training was attended by high school teachers and took place at Al Bayan Superior High School, Sukabumi Regency. During the training, participants were taught how to use Octave in mathematics instruction to enhance teacher competency. The results of the training show that the use of Octave can support learning in schools by boosting teacher competency and inspiring teachers to become more professional. This, in turn, leads to improved learning quality in schools, which ultimately enhances the overall quality of education.
Analisis Kemampuan Pemecahan Masalah Matematis Siswa Berdasarkan Self Confidence Melalui PBL dengan Pendekatan PMR Maria Dea Pramudita; Lukita Ambarwati; Flavia Aurelia Hidajat
SAP (Susunan Artikel Pendidikan) Vol. 10 No. 3 (2026): SAP
Publisher : Universitas Indraprasta PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/sap.v10i03.157

Abstract

This study aims to describe students' mathematical problem-solving abilities based on their self-confidence levels through Problem Based Learning (PBL) with a Realistic Mathematics Learning (RMAT) approach. This study used a descriptive qualitative approach with nine tenth-grade students selected purposively based on the results of a self-confidence questionnaire, problem-solving ability test results, observations, and interviews. The results showed that students with high self-confidence tended to be able to solve problems completely and systematically according to Polya's steps. Students with moderate self-confidence showed quite good abilities, but were not consistent in re-checking their answers. Meanwhile, students with low self-confidence experienced difficulties from understanding the problem to solving it. The PBL learning process with the RMAT approach was proven to help students relate mathematical concepts to real contexts, build self-confidence, and increase active involvement in the problem-solving process.
Kendala dan Miskonsepsi Kognitif Siswa dalam Menyelesaikan Soal Geometri Tingkat Tinggi (HOTS) Lastri Hutagalung; Lukita Ambarwati; Anny Sovia; Tian Abdul Aziz; Flavia Aurelia Hidajat
Mandalika Mathematics and Educations Journal Vol 7 No 4 (2025): Desember
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v7i4.10670

Abstract

This study aims to identify students’ misconceptions in solving Higher Order Thinking Skills (HOTS) geometry problems on plane figures. A descriptive qualitative approach using Cognitive Error Analysis was applied to the written responses of 10 eleventh-grade students in the Mathematics Cambridge Program. The validated instrument consisted of three HOTS essay items. Data were analyzed through error classification, mapping to HOTS levels (C4, C5, C6), and in-depth diagnosis of responses identified as misconceptions. The findings show that students’ main difficulties lie in the Analyzing stage (C4), which subsequently weakens their ability to evaluate and create strategies (C5–C6). Two dominant patterns emerged: misreading non-routine instructions and errors in fundamental geometric concepts, with several cases indicating independent weaknesses at C6. These results highlight the need to strengthen strategic analysis as the foundation for HOTS development. The study is limited by its small sample size and reliance on written data.
Co-Authors Al Wanita Imani Hikmatuprilla Alfian Tri Ananda Ananda Fitri Rahmawati Anggela Soraya Anny Sovia Anton Noornia Brinda Sari Daniel Alexander Devi Eka Wardani Meganingtyas Diah Citra Ningrum Citra Dwi Antari Wijayanti Eti Dwi Wiraningsih Fahmi Rusli Fakhry Asad Agusfrianto Flavia Aurelia Hidajat, Flavia Aurelia Gesti Marsaulina Br. Pakpahan Gianthie Jenita Heilinda Esther Simanjuntak Islah Ziauddin Sardar Yeubun Jason Christiawan Widiaputera Khoirun Nisa Lastri Hutagalung Leny Dhianti Haeruman Leny Wiji Astuti Lorensya Lorensya Lukman El Hakim Lukman El Hakim Mahatma, Yudi Makmuri Maria Dea Pramudita Maria Dea Pramudita Meiliasari Meiliasari, Meiliasari Muhammad Julian Nurherdiati, Ratna Pinta Deniyanti Sampoerno Sri Sudaryati Sudarwanto Sudarwanto Tian Abdul Aziz Tri Murdiyanto Vivi Vatillah Wardani Rahayu Wimbo Fari Susilo