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All Journal Al Ishlah Jurnal Pendidikan Jurdimas (Jurnal Pengabdian Kepada Masyarakat) Royal JOURNAL OF SCIENCE AND SOCIAL RESEARCH JURNAL MATHEMATIC PAEDAGOGIC MES: Journal of Mathematics Education and Science Jurnal IPTEK Bagi Masyarakat Jurnal Pemberdayaan Sosial dan Teknologi Masyarakat Jurnal Ilmiah Multidisiplin Nusantara Notasi: Jurnal Pendidikan Matematika Diskrit: Jurnal Inovasi Pendidikan Matematika
Elfira Rahmadani
Universitas Asahan
Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Economics, Econometrics & Finance Education Languange, Linguistic, Communication & Media Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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PENINGKATAN KEMAMPUAN BERPIKIR KRITIS SISWA MENGGUNAKAN MODEL PROBLEM BASED LEARNING BERBANTUAN QUIZIZZ Nisma Sari; Elfira Rahmadani
Diskrit: Jurnal Inovasi Pendidikan Matematika Vol. 4 No. 1 (2026): Januari 2026
Publisher : Program Studi Pendidikan Matematika, Universitas Asahan

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Abstract

This study aims to determine the effectiveness of the Problem-Based Learning (PBL) model in improving students’ mathematical thinking skills on the Exponent topic among Grade X students at SMA Negeri 1 Simpang Empat in the 2024/2025 academic year. This quasi-experimental research employed a pre-test–post-test control group design with two classes: an experimental class receiving PBL instruction and a control class taught through conventional learning. The average pre-test scores of the experimental and control classes were 69.11 and 66, respectively. After the learning intervention, the average post-test score of the experimental class increased significantly to 84.61, while the control class achieved only 57.37. Statistical analysis using the t-test revealed that the calculated t-value (t_hitung = 4.42) exceeded the critical t-value (t_tabel = 1.67), indicating a significant difference between the two groups. These findings demonstrate that the PBL model has a positive and significant effect on enhancing students’ mathematical thinking skills in Exponent material. Therefore, PBL can be considered an effective alternative instructional approach for mathematics learning at the senior high school level.
PENGARUH MODEL PEMBELAJARAN TREFFINGER BERBANTUAN APLIKASI MATH RIDDLES TERHADAP  KEMAMPUAN KOMUNIKASI MATEMATIS SISWA Sri Reski Febriani; Elfira Rahmadani
Diskrit: Jurnal Inovasi Pendidikan Matematika Vol. 4 No. 1 (2026): Januari 2026
Publisher : Program Studi Pendidikan Matematika, Universitas Asahan

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Abstract

mathematical communication skills assisted by the Math Riddles application in class VIII students at MTs. ALWASHLIYAH 64 Pasar Lembu. This study uses a total random sampling technique which is included in the quantitative research method. In addition, this study found that the samples used were normally distributed and homogeneous. The results of data analysis show that the instruments used are valid and reliable. The population in this study were class VIII students at MTs. ALWASHLIYAH 64 Pasar Lembu, with a research sample consisting of two classes, namely the experimental class and the control class. The instrument used was a test. The results showed that the mathematical communication skills of students who applied the Treffinger learning model assisted by the Math Riddles application were better than students who used the direct learning model, with an average of the experimental class of 72.32 greater than the control class of 58.00.
Co-Authors Amanda Chantika Sari Br Purba Andini Anim Anim Cahyani Aprilia Dewi Astuti Dewi Mardhiyana Dewi Susanti Purba Dian Armanto Dian Armanto Dian Armanto Diana Dila Oktapia Rahmadani Dilli Arlina Dinda Ariyani E. Elvis Napitupulu Eliza Dwi Ananda Ely Syafitri Fildzah Rizkiah Damanik Fiqih Andrian Nasution Gladis Syaharani Putri Hanisa Romadona Nainggolan Juliyani Safika Dewi Khairun Nisa Khairunisa Maulidannisa Maulidannisa Nisma Sari Nova Eliza Silaen Nurhikmah Lubis Pardomuan Sitompul Putri Andini Resi Azzahra Natasya Asmadita Reza Umami Sahat Saragih Sakila Azria Fitri Sri Reski Febriani Syarinah Junianti Hasibuan Tari Rizliyanti Umi Kalsum Wilda Annisa Hasibuan Yogo Dwi Prasetyo Yovi Dwi Ramadhani Yurinda Vilga Al Hafizah Zulfiqri Panjaitan