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

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Journal : EKSAKTA : Jurnal Penelitian dan Pembelajaran MIPA

 1 
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.
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.
Co-Authors ., khoirunniasa Ainal Warda Hasibuan, Yulia Arifitriana, Wirna Hutagalung, Roito Khomeni, Ayathollah lubis, mhd fahmi Nastain, Robi Nilasari Harahap, Adek Puspa Riani Nasution, Puspa Riani Sari, Fatima siagian, elvi rosalinda Sitompul, Nurhawani