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All Journal EKSAKTA : Jurnal Penelitian dan Pembelajaran MIPA Jurnal Cermatika Jurnal Pengabdian Indonesia
Rhamayanti, Yuni
Universitas Muhammadiyah Tapanuli Selatan
Agriculture, Biological Sciences & Forestry Education Mathematics

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KEMAMPUAN BERPIKIR KOMPUTASI MATEMATIS MAHASISWA DALAM MEMAHAMI MATERI EKSPONENSIAL PADA MATA KULIAH MATEMATIKA DASAR Khomeni, Ayathollah; Rhamayanti, Yuni
Eksakta : Jurnal Penelitian dan Pembelajaran MIPA Vol 10, No 1 (2025): Eksakta : Jurnal Penelitian dan Pembelajaran MIPA
Publisher : Fakultas Keguruan Dan Ilmu Pendidikan, UM-Tapsel

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/eksakta.v10i1.239-247

Abstract

This study aims to analyze the mathematical computational thinking abilities of students in understanding exponential material in the Basic Mathematics course. The research was conducted on first-semester students of the Vocational Education and Informatics Program at the Tapanuli Selatan Institute of Education, with a sample size of 40 students. The method used was descriptive research with a qualitative data analysis technique based on the model of Miles and Huberman (2003), through the stages of data reduction, data presentation, and conclusion drawing. Students' mathematical computational thinking abilities were analyzed based on the indicators of problem decomposition, pattern recognition, abstraction, and algorithmic thinking. The results showed that the students' mathematical computational thinking abilities in solving exponential problems were mostly in the moderate category (50%), with 22.5% of students having high or very high abilities. However, 22.5% of students still showed low to very low abilities in solving problems. This study concludes that although most students are able to identify and solve mathematical problems computationally, there is still a need for improvement in computational thinking abilities, especially in pattern recognition and abstraction. This study contributes to the development of mathematics education, particularly in preparing students to face the challenges of the digital era, which demands computational thinking skills.
MODEL INQUIRY LEARNING: SOLUSI PENINGKATAN PEMECAHAN MASALAH DAN AKTIVITAS BELAJAR MATEMATIKA SISWA SMA Rhamayanti, Yuni; Nilasari Harahap, Adek; Ainal Warda Hasibuan, Yulia
Eksakta : Jurnal Penelitian dan Pembelajaran MIPA Vol 10, No 2 (2025): Eksakta : Jurnal Penelitian dan Pembelajaran MIPA
Publisher : Fakultas Keguruan Dan Ilmu Pendidikan, UM-Tapsel

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/eksakta.v10i2.39-47

Abstract

Penelitian ini dilaksanakan untuk menawarkan Model Inquiry Learning sebagai solusi dalam meningkatkan kemampuan pemecahan masalah matematika siswa. Latar belakang studi ini adalah rendahnya partisipasi belajar dan kesulitan signifikan yang dialami siswa kelas X-2 SMA Negeri 1 Ulu Barumun saat memahami konsep serta menyelesaikan soal matematika kompleks, khususnya soal cerita. Pendekatan yang diterapkan dalam riset ini adalah Penelitian Tindakan Kelas (PTK) dua siklus, yang setiap siklusnya mencakup tahap perencanaan, implementasi, observasi, dan refleksi. Hasilnya sangat mendukung, menunjukkan peningkatan berarti pada keterampilan pemecahan masalah matematis siswa: tingkat ketuntasan klasikal melonjak dari 71.4 % pada Siklus I menjadi 89.3% pada Siklus II. Tak hanya itu, aktivitas belajar siswa juga memperlihatkan kenaikan yang substansial, dari 73.55% menjadi 85.75%, dan kemampuan guru dalam memfasilitasi pembelajaran turut menguat, mencapai 92.5% dari 84.38% sebelumnya. Model Inquiry Learning telah terbukti efektif dalam membentuk pembelajaran yang interaktif, meningkatkan keterlibatan siswa, dan memperkuat keterampilan berpikir kritis mereka. Temuan ini memberikan prospek yang sangat baik untuk implementasi model ini di berbagai konteks pendidikan dan materi pelajaran lainnya di masa depan.
PENGARUH PENERAPAN PMR TERHADAP PENINGKATAN KEMAMPUAN KOMUNIKASI DAN RESPON SISWA SMP PADANGSIDIMPUAN rhamayanti, yuni; nastain, robi; lubis, mhd fahmi
JURNAL CERMATIKA Vol. 1 No. 2 (2021): Jurnal Cermatika Vol 1 No 2 Oktober 2021
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v1i2.788

Abstract

SMP as the subject of this research is based on the consideration that the cognitive level is still in the transitional stage from concrete to formal operations so that it is suitable for the implementation of PMR. This study aims to 1) determine the effect of implementing PMR learning on improving students' mathematical communication skills, and 2) knowing student responses during the process of implementing PMR learning. This research is a quasi-experimental research. The design used in this study was a pretest posttest control group design. In this design, there are two groups selected randomly, then given a pretest to determine the extent to which students are ready to receive learning, while the posttest is used to measure students' mathematical communication skills after being given treatment. The research instrument used tests and non-tests. The test used is a test of students' mathematical communication skills in the form of description questions, while the non-test used is a student response questionnaire. Before the test was used, the Expert test and Instrument Trial were conducted at SMP Negeri 3 Padangsidimpuan. The results showed that there was an effect of the application of PMR on the improvement of students' mathematical communication skills. The increase in the mathematical communication ability of the experimental class was 0.63 in the medium category and the control class was 0.24 in the low category. The results of the calculation of student responses to PMR components and activities are 95.55%, this shows a positive student response because the average percentage is > 80%. Based on the results of this study, it is hoped that the application of PMR can be used as an alternative for mathematics teachers to be developed as an effective learning strategy so that mathematics communication skills and student responses are better.
PEMANFAATAN E-LEARNING DALAM PEMBELAJARAN MATEMATIKA SECARA MANDIRI Sitompul, Nurhawani; siagian, elvi rosalinda; sari, fatima; ., khoirunniasa; rhamayanti, yuni
JURNAL CERMATIKA Vol. 1 No. 2 (2021): Jurnal Cermatika Vol 1 No 2 Oktober 2021
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v1i2.789

Abstract

Basically, the use of E-learning in mathematics education is broad, both as a medium of learning in the classroom and as a medium for independent learning. Utilization of E-Learning will improve learning outcomes indirectly. Thus, it is hoped that the internet speed available on the campus, especially the Graha Nusantara University (UGN) Padangsidimpuan, is very good so that the implementation of self-learning based on E-Learning can run smoothly. In addition, all training is needed in the context of socializing the development of E-Learning learning methods so that students have effective thinking patterns and accept E-Learning as an alternative learning and evaluation in teaching and learning.
ONTOGENICAL OBSTACLE PESERTA DIDIK DALAM MEMPELAJARI HUBUNGAN ANTAR SUDUT SALING BERPENYIKU KELAS VII SMP Khomeni, Ayathollah; Rhamayanti, Yuni
Eksakta : Jurnal Penelitian dan Pembelajaran MIPA Vol 9, No 1 (2024): Eksakta : Jurnal Penelitian dan Pembelajaran MIPA
Publisher : Fakultas Keguruan Dan Ilmu Pendidikan, UM-Tapsel

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/eksakta.v9i1.%p

Abstract

Abstract Mathematics consists of several sections of science concentration, one of which is geometry. Lines and angles are the most basic geometric material studied by students at the Junior High School (SMP) level in class VII. Lines and angles are basic material that is very important for students to understand as a basis for understanding subsequent geometry material. Ontogenic obstacles (ontegic obstacles) are one of the obstacles related to students' mental readiness in terms of the limited knowledge possessed by students, both in terms of application context and in terms of cognitive maturity in accepting new knowledge. The aim of the research is to analyze the types of ontogenic obstacles identified by students in learning the material about lines and angles in the sub-discussion of angles. The method used in this research is a qualitative method with a Didactical Design  Research model approach through retrospective analysis. Data collection in research applies triangulation techniques, namely through observation, documentation and interviews. The results of this research indicate that students experience learning obstacles of the ontogenic type in learning the relationship between angles at angles school in line and angle material class VII SMP.
IMPLEMENTASI KULIAH KERJA LAPANGAN MAHASISWA UGN PADANGSIDIMPUAN DALAM PENGEMBANGAN KOMPETENSI DAN PENGABDIAN DI DESA SIAMPORIK LOMBANG Rhamayanti, Yuni; Haritsah Hammamah Harahap; Andri Hansaso Nasution; Bayo Harahap; Putri Wahyuni; Rumona Habibah Lubis; Desi Fitrah Nainggolan
Jurnal Pengabdian Indonesia (JPI) Vol. 1 No. 2 (2025): Vol. 1 No. 2 Edisi Juli 2025
Publisher : PT. Jurnal Center Indonesia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62567/jpi.v1i2.1096

Abstract

Perguruan tinggi memiliki peran strategis dalam mendukung pembangunan nasional melalui pelaksanaan Tri Dharma Perguruan Tinggi: pendidikan dan pengajaran, penelitian, serta pengabdian kepada masyarakat. Salah satu bentuk nyata dari pengabdian masyarakat adalah kegiatan Kuliah Kerja Lapangan (KKL) yang wajib diikuti oleh mahasiswa sebagai bagian dari proses pembelajaran kontekstual di luar kelas. Universitas Graha Nusantara (UGN) Padangsidimpuan berkomitmen mengoptimalkan KKL sebagai sarana pengembangan kompetensi akademik dan sosial mahasiswa melalui keterlibatan langsung di tengah masyarakat. Pada tahun 2024, kegiatan KKL dilaksanakan di Desa Siamporik Lombang, Kecamatan Angkola Selatan, Kabupaten Tapanuli Selatan, Provinsi Sumatera Utara. Dengan pendekatan Participatory Action Research (PAR) yang dikombinasikan dengan prinsip service learning, mahasiswa dari berbagai program studi melaksanakan program lintas bidang, meliputi pendidikan, pertanian, ekonomi, sosial-politik, dan teknik. Kegiatan-kegiatan ini mencakup peningkatan literasi anak, inovasi pertanian berbasis sumber daya lokal, pelatihan ekonomi kreatif, pendataan kependudukan, serta perbaikan infrastruktur dan pengenalan teknologi edukatif. Hasil pelaksanaan menunjukkan bahwa pendekatan partisipatif efektif mendorong keterlibatan aktif masyarakat dan penguatan kapasitas mahasiswa sebagai agen perubahan. Mahasiswa tidak hanya menerapkan ilmu yang diperoleh di bangku kuliah, tetapi juga mengembangkan empati, kepemimpinan, serta kemampuan berpikir kritis dan kolaboratif. Pelaksanaan KKL ini menegaskan bahwa perguruan tinggi mampu berkontribusi secara konkret terhadap pembangunan masyarakat melalui model pengabdian yang kolaboratif dan transformatif. Harapannya, model ini dapat direplikasi di wilayah lain untuk mendorong masyarakat yang mandiri dan berdaya.
Co-Authors ., khoirunniasa Ainal Warda Hasibuan, Yulia Andri Hansaso Nasution Bayo Harahap Desi Fitrah Nainggolan Haritsah Hammamah Harahap Khomeni, Ayathollah lubis, mhd fahmi Nastain, Robi Nilasari Harahap, Adek Putri Wahyuni Rumona Habibah Lubis Sari, Fatima siagian, elvi rosalinda Sitompul, Nurhawani