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All Journal Humantech : Jurnal Ilmiah Multidisiplin Indonesia Papanda Journal of Mathematics and Sciences Research
Gultom, Rina Gebryella
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Religion Economics, Econometrics & Finance Education Law, Crime, Criminology & Criminal Justice Mathematics Public Health

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ANALISIS KESALAHAN MAHASISWA DALAM MENGERJAKAN SOAL PELUANG SEBAGAI PENGUASAAN DASAR MATA KULIAH MATEMATIKA EKONOMI Br Gultom, Rosiana Claudia; Frisnoiry, Suci; Gultom, Rina Gebryella; Fadhilah, Yasmin Risha
Humantech : Jurnal Ilmiah Multidisiplin Indonesia Vol. 2 No. 6 (2023): Humantech : Jurnal Ilmiah Multidisiplin Indonesia
Publisher : Program Studi Akuntansi IKOPIN

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Abstract

Peneliti melakukan penelitian yang bertujuan untuk mengetahui kesalahan-kesalahan dalam menyelesaikan soal matematika bertajuk peluang sebagai penguasaan dasar pada mata kuliah matematika ekonomi. faktor kesalahan ini harus diketahui agar lebih mudah mendapatkan solusi dan bagian yang perlu ditekankan saat pembelajaran. Penelitian ini meruapakan penelitian deskriptif kualitatif untuk menganalisis dan menguraikan jenis-jenis kesalahan yang mahasiswa lakukan ketika mengerjakan pertanyaan matematika peluang. Subjek penelitian ini ialah 5 mahasiswa PSPM 2021 Universitas Negeri Medan. Tes tertulis menjadi teknik pengumpulan data. Hasil analisis kesalahan siswa yang diperoleh 100% kesalahan konseptual dengan standar kesalahan “sangat tinggi”, 33,3% kesalahan prinsip dengan standar kesalahan “sangat rendah”, 50% kesalahan operasi dengan tingkat kesalahan “sangat rendah”. Hal ini mengarah pada kesimpulan bahwa kesalahan pengerjaan mahasiswa tentang materi peluang rendah, dan pendidik harus memperhatikan pengetahuan, menekankan pada bagian-bagian penting yang digunakan mahasiswa.
Pengaruh model pembelajaran discovery learning berbantuan aplikasi Geogebra terhadap kemampuan pemecahan masalah matematis siswa kelas X SMA Gultom, Rina Gebryella; Surya, Edy
Papanda Journal of Mathematics and Science Research Vol. 4 No. 2 (2025): Volume 4 Nomor 2 September 2025
Publisher : Papanda Publisher

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Mathematics is one of the subjects that students consider difficult and less interesting. This can be due to the lack of variety and learning models as well as the proper integration of learning media. One of the impacts of this is the low mathematical problem-solving ability of students. Therefore, this study was conducted to see whether the discovery learning model assisted by the GeoGebra application has an effect on the ability to solve mathematical problems for students in class X of Prayatna Private High School Medan T.A 2024/2025. The research method used was Quasi Experiment with a pretest-posttest control group design. The research sample determined by random sampling consisted of two classes, the first using discovery learning with the help of GeoGebra and the second using direct learning. Data was collected through instruments in the form of pretest and posttest. A comparative analysis of two independent groups using a t-test found that the discovery learning model assisted by the GeoGebra application had a significant effect on the mathematical problem-solving ability of students. In addition, the average score of the experimental class (83.83) was higher than that of the control class (76.66) and the average N-Gain score of the experimental class (75.70) was higher than that of the control class (54.09), showing that the discovery learning model assisted by the GeoGebra application not only had a significant effect but also improved the mathematical problem-solving skills of students. In addition, there is an increase in students' mathematics learning where students become active in the learning process and easily understand the teaching material
Co-Authors Br Gultom, Rosiana Claudia Edy Surya Fadhilah, Yasmin Risha Suci Frisnoiry