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Reni Untarti

Universitas Muhammadiyah Purwokerto

Author-ID : 516328

Agriculture, Biological Sciences & Forestry Arts Humanities Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Physics Social Sciences Other

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APPLICATION OF PROBLEM-BASED LEARNING TO IMPROVE STUDENT MOTIVATION AND LEARNING OUTCOMES ASSISTED BY WORDWALL Frada, Titis Wilianti; Gunawan, Gunawan; Untarti, Reni; Kusuma, Jaka Wijaya; Ristianto, Meiga; Vertikawati, Ratna
International Journal of Multidisciplinary Research and Literature Vol. 3 No. 2 (2024): INTERNATIONAL JOURNAL OF MULTIDISCIPLINARY RESEARCH AND LITERATURE
Publisher : Yayasan Education and Social Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53067/ijomral.v3i2.205

This study aims to determine student motivation and learning outcomes in applying project-based learning (PBL) assisted by Wordwall media. This type of research uses classroom action research (PTK). The study subjects were grade V students of SDN 1 Kedungbanteng, totalling 31 people. According to Kemmis and Mc Taggart, this research design refers to the Classroom Action Research (PTK) model; this research data collection technique uses observation, questionnaires and tests. The data analysis technique uses qualitative data analysis and quantitative data analysis. The results showed increased motivation and learning outcomes in PKN lessons using problem-based learning (PBL) through wordwall media. The study results were the results of the learning motivation questionnaire showing that the average class of students in cycle I was 61.69% in the medium category. In contrast, it increased by 11.09% in cycle II to 72.78%. The application of the problem-based learning (PBL) model through word wall media also improves student learning outcomes from before action (pretest) to the given action (posttest). Based on the results of the pretest scores, students showed 32.2% completeness, then the given action in cycle I increased to 45.16% and in cycle II increased to 87%. Based on the criteria set, problem-based learning (PBL) through wordwall media has met the predetermined standards of>70%.

ETNOMATHEMATHICS IN JAVANESE RIBBON: THE MEANING OF EVERY LOST OBJECT Rahmah, Latifah Fitriana; Untarti, Reni; Gunawan, Gunawan
International Journal of Multidisciplinary Research and Literature Vol. 3 No. 4 (2024): INTERNATIONAL JOURNAL OF MULTIDISCIPLINARY RESEARCH AND LITERATURE
Publisher : Yayasan Education and Social Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53067/ijomral.v3i4.231

The use of Primbon in determining the meaning of lost objects reflects how local traditions and beliefs still influence the daily practices of Javanese society. This study aims to dig deeper into how Ethnomathematics is used in Javanese culture to give meaning to everyday phenomena, such as when losing objects. The research method used in this study is the descriptive qualitative method. Data were collected through observation, interviews, and literature study. The observation was conducted by observing the Javanese Primbon calculation activities in Panican Village, Kemangkon Subdistrict, Purbalingga Regency, Central Java Province, Indonesia. The interview used in this research is semi-structured with the resource person, Mr. SH. The data source in this research uses secondary data obtained by conducting a literature study of the versatile Javanese primbon book owned by R. Gunasasmita. The results of this study indicate the existence of Ethnomathematics in giving meaning to the calculation of Primbon in Javanese culture, which uses the mathematical concept of modulo 3 and 4 to determine the meaning of lost objects, such as who the thief is, gender, skin colour, and whether the lost object will be found again

Peningkatan Ketahanan Pribadi dan Prestasi Belajar Matematika Peserta Didik Melalui Model Problem Based Learning (PBL) Fertikawati, Ratna; Gunawan, Gunawan; Purwanto, Joko; Untarti, Reni; Syauqy, Akhmad
JKPM (Jurnal Kajian Pendidikan Matematika) Vol 9, No 2 (2024): JKPM (Jurnal Kajian Pendidikan Matematika)
Publisher : Universitas Indraprasta PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/jkpm.v9i2.24011

EFFORTS TO IMPROVE CRITICAL THINKING SKILLS AND INTEREST IN LEARNING MATHEMATICS USING THE INTEGRATED NUMBER HEAD-TOGETHER PROBLEM-BASED LEARNING MODEL Fathin, Aizza Zakkiyatul; Gunawan, Gunawan; Untarti, Reni; Kusuma, Jaka Wijaya; Sugiastuti, Sugiastuti
International Journal of Economy, Education and Entrepreneurship (IJE3) Vol. 3 No. 3 (2023): International Journal of Economy, Education and Entrepreneurship
Publisher : Yayasan Education and Social Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53067/ije3.v3i3.185

This study aims to improve students' critical thinking skills and interest in learning mathematics through the application of Problem-Based Learnin (PBL)-Numbered Head Together (NHT) learning. This research is a Classroom Action Research (PTK) which is carried out for two cycles. The subjects of this study were 26 grade VIII D students at SMP Negeri 1 Gumelar for the 2022/2023 school year. Data collection was carried out with three instruments, namely observation sheets, tests, and non-tests. The results showed that students' critical thinking skills and interest in learning mathematics increased. In the initial condition, students' critical thinking skills before learning were not completed then after learning in the 2nd cycle classical completeness was achieved with a percentage of 85.4% of students who were completed. Increased critical thinking skills are also in line with increased interest in learning mathematics. Students' interest in learning mathematics before learning had an average score of 51.19 with the medium category and in the 2nd cycle obtained a score of 63.31 with a high category in accordance with the research target. This is supported by the increase in the percentage of PBL-NHT learning implementation from cycle 1 by 83% to 92% in cycle 2 for both teacher and student activities

Implementasi Model Differentiated Problem Based Learning Untuk Meningkatkan Kemampuan Pemecahan Masalah Matematis Siswa Kelas X Agustiana, Agustiana; Untarti, Reni
Didactical Mathematics Vol. 6 No. 2 (2024): Oktober 2024
Publisher : Program Studi Pendidikan Matematika, Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/dm.v6i2.11070

Penelitian ini bertujuan untuk meningkatkan kemampuan pemecahan masalah matematis siswa melalui model differentiated problem based learning. Subyek penelitian ini adalah siswa kelas X PPLG 1 SMK Negeri 1 Rembang. Penelitian ini merupakan Penelitian Tindakan Kelas (PTK) yang dilaksanakan dalam tiga siklus di mana setiap siklus terdiri dari dua pertemuan. Setiap siklus terdiri tahap perencanaan, pelaksanaan tindakan, observasi, dan refleksi. Instrumen untuk mengukur kemampuan pemecahan masalah matematis siswa menggunakan tes evaluasi yang diberikan setiap akhir siklus. Berdasarkan hasil akhir penelitian diperoleh skor akhir rata-rata tes evaluasi pada siklus 1 yaitu 50,42 dengan kategori cukup baik; skor rata-rata tes evaluasi pada siklus 2 yaitu 58,95 dengan kategori cukup baik; dan skor rata-rata tes evaluasi pada siklus 3 yaitu 70,66 dengan kategori baik. Jadi dapat disimpulkan bahwa model differentiated problem based learning dapat meningkatkan kemampuan pemecahan masalah matematis siswa kelas X PPLG 1 SMK Negeri 1 Rembang.

ANALISIS KESALAHAN SISWA KELAS VIII SMP PADA MATERI STATISTIKA Fayza, Ratna; Untarti, Reni
JURNAL MathEdu (Mathematic Education Journal) Vol 7 No 3 (2024): JURNAL MathEdu (Mathematic Education Journal) November 2024
Publisher : Program Studi Pendidikan Matematika Institut Pendidikan Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37081/mathedu.v7i3.6330

Kesalahan yang biasa dilakukan oleh siswa sering terjadi dalam pembelajaran yang ada di sekolah seperti saat menyelesaikan sebuah permasalahan khususnya pada materi statistika. Tujuan penelitian ini adalah untuk menganalisis kesalahan siswa SMP kelas VIII pada materi Statistika. Sampell yang digunakan pada penelitian ini adalah Siswa Kelas VIII SMP Negeri 3 Purwokerto berjumlah 5 orang siswa. Metode penelitian ini adalah deskriptif kualitatif. Data penelitian yang diperoleh setelah dilakukan tes tertulis. Hasil penelitian yang dilakukan ini menunjukkan bahwa kesalahan yang siswa antara lain : siswa tidak menuliskan informasiyang diketahui dalam soal dan tidak menulis ulang permasalahan yang ada pada soal, siswa tidak menuliskan rumus untuk menjawab soal, siswa tidak menyelesaikan masalah dengan menggunakan tahap-tahap yang lengkap, serta terkadang siswa hanya menuliskan hasil akhir dai jawaban tanpa menuliskan kesimpulan.

APPLICATION OF THE CONTEXTUAL TEACHING AND LEARNING MODEL THROUGH TEACHING AT THE RIGHT LEVEL ASSISTED BY CONCRETE MEDIA TO IMPROVE MATHEMATICAL PROBLEM-SOLVING SKILLS Gunawan, Gunawan; Nisa, Izatun; Untarti, Reni; Kusuma, Jaka Wijaya; Purwanto, Joko; Susri, Susri
International Journal of Economy, Education and Entrepreneurship (IJE3) Vol. 4 No. 3 (2024): International Journal of Economy, Education and Entrepreneurship
Publisher : Yayasan Education and Social Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53067/ije3.v4i3.299

The background of the problem in this study is the low mathematical problem-solving ability and learning outcomes of grade II students of SD Negeri 1 Banjarsari Kulon. In the mathematics learning process, where students are less able to understand the material delivered by the teacher, and in doing problems do not use the solution steps, causing low students' ability to solve problems so that learning outcomes are not optimal. The research conducted during these 3 cycles aims to improve the ability to solve mathematical problems in measurement materials. Data on problem-solving skills and activities of teachers and students using observation sheets and through written tests were both quantitatively analyzed. This success indicator with an average percentage of overall mathematical problem-solving ability reaches 75%. The results of this study show that the average percentage of problem-solving ability in cycle 1 is 43% (less) to 82% (very good) in cycle III. In the aspect of completeness, learning outcomes were shown at an average of 68% completeness in cycle I and to 84% in cycle III.

Ethnomathematics Exploration in The Joglo House of Banyumas Setyaningrum, Agustina; Untarti, Reni
AlphaMath : Journal of Mathematics Education Alphamath: Vol. 10, No. 2, November 2024
Publisher : Department of Mathematics Education, Universitas Muhammadiyah Purwokerto, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/alphamath.v10i2.22505

Indonesia is known as a country with cultural diversity, one of which is the traditional house, a symbol of each tribe and region. In its implementation, the Joglo house is only used as a residence and a place to protect against exposure to sunlight. Still, after exploring it in more depth, the structure of the traditional house can be used as learning material in the field of education. One field of education that can study culture through the structure of conventional house buildings is mathematics. Learning mathematics that includes culture can help students improve their understanding of abstract mathematics. However, not many mathematics lessons incorporate culture into the material. So, this research aims to explore Banyumas Joglo houses regarding geometric concepts. The type of research used is qualitative research with an ethnographic approach. Data collection methods include observation, documentation and interviews. The data analysis consists of data reduction, data presentation, and conclusion. This research shows that the Banyumas Joglo traditional house is an example of a conventional house rich in ethnomathematics, where elements of traditional culture contain mathematical knowledge in the form of geometric concepts.

THE PROFILE OF CREATIVE THINKING PROCESS: PROSPECTIVE MATHEMATICS TEACHERS Gunawan, Gunawan; Ferdianto, Ferry; Mulyatna, Fauzi; Untarti, Reni
JURNAL EDUSCIENCE Vol 12, No 2 (2025): Jurnal Eduscience (JES), (Authors from United Kingdom, Nigeria, and Indonesia)
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jes.v12i2.6915

Purpose The creative thinking process is one of the important components of creativity. The profile of the creative thinking process of prospective mathematics teachers based on the level of creativity is explained in this study.Methodology –The applied research method was qualitative with an exploratory approach. The research involved 35 prospective mathematics teachers in the Multivariable Calculus course. The data collection techniques were creative thinking tests and interviews. Data analysis uses data reduction techniques, presentation, and conclusion drawn.Findings –The stages of the creative thinking process include preparation, incubation, estimation, illumination, and verification stages. The study results show that the profile of the creative thinking process of students in the creative and creative category can find unique ideas, and their application is carried out in detail. Each stage of creative thinking is fulfilled clearly. Especially for the estimation stage, it is a new finding in the creative thinking process. The estimation stage makes a real contribution to the birth of creativity. The term to describe the estimation stage is "trial and error."Significance –The findings show that the estimation stage, or "trial and error," helps accelerate the acquisition of creative ideas. This stage is a strategic solution to increase creativity. However, using teaching materials or student worksheets must still be increased to implement the estimation stage in the problem-solving flow.

How Self-Efficacy Shapes Mathematical Analytical Thinking: A Qualitative Study using Action-Process-Object-Schema Theory Gunawan, Gunawan; Ferdianto, Ferry; Untarti, Reni; Akhsani, Lukmanul
Jurnal Pendidikan MIPA Vol 26, No 1 (2025): Jurnal Pendidikan MIPA
Publisher : FKIP Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpmipa.v26i1.pp754-778

Analytical thinking enables students to solve complex problems in a systematic and measurable manner. This study examined students' analytical thinking processes in relation to self-efficacy using the Action-Process-Object-Schema (APOS) theory. The researchers employed a qualitative method with an explanatory approach. They selected mathematics education students from Universitas Muhammadiyah Purwokerto who were enrolled in a sequence convergence course as research subjects. To collect data, the researchers used analytical thinking tests, questionnaires, and interviews. Based on the self-efficacy questionnaire, the researchers classified students into high, medium, and low self-efficacy groups. They selected one informant from each category using purposive sampling. The data analysis involved three stages: data reduction, presentation of findings, and interpretation. The analytical thinking process included collecting, differentiating, organizing, and attributing. The findings showed that students in the high and medium self-efficacy groups demonstrated strong analytical thinking skills. They successfully completed all stages—collecting, differentiating, organizing, and attributing. In contrast, students with low self-efficacy lacked adequate prior knowledge and required assistance in applying mathematical concepts and completing proofs during the organizing stage. These students gathered only limited information at the collection stage due to a poor understanding of the main problem. As a result, they could only partially complete each stage of the analytical thinking process. Keywords: analytic thinking process, APOS theory, self-efficacy.

Co-Authors Agustiana, Agustiana agustina setyaningrum, agustina Akhmad Jazuli Artiah Artiah Chumaedi Sugihandardji Fathin, Aizza Zakkiyatul Fauzi Mulyatna Fayza, Ratna Ferry Ferdianto Fertikawati, Ratna Fitranto Eko Subekti Fitrianto Eko Subekti Fitrianto Eko Subekti Frada, Titis Wilianti Gunawan Gunawan Gunawan Gunawan Gunawan Gunawan Gunawan, Gunawan Hartono, Tri Jaka Wijaya Kusuma Joko Purwanto Kusuma, Anggun Badu Lukmanul Akhsani Malim Muhammad Malim Muhammad Maulida, Farah Isti'anatul Nisa, Izatun Purwanto, Joko Putri, Sabrina Aristya Rahmah, Latifah Fitriana Ristianto, Meiga Sari, Rizki Agustina Sayidan Amrizal Fikri Subekti, Fitranto Eko Sugiastuti, Sugiastuti Susri, Susri Syauqy, Akhmad Tri Hartono Vertikawati, Ratna

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