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Tambunan, Lois
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Pengaruh Model Pembelajaran Discovery Learning Berbantuan Geogebra Terhadap Hasil Belajar Matematika Pada Materi Persamaan Garis Lurus Pasaribu, Hevi Cricencia Angelina; Pangaribuan, Firman; Lois Oinike Tambunan
PIJAR: Jurnal Pendidikan dan Pengajaran Vol. 4 No. 1 (2025): Desember
Publisher : CV Putra Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58540/pijar.v4i1.1260

Abstract

Penelitian ini bertujuan mengetahui pengaruh model Discovery Learning berbantuan GeoGebra terhadap hasil belajar matematika siswa pada materi persamaan garis lurus. Metode penelitian menggunakan desain pre-eksperimental tipe one-shot case study dengan subjek 30 siswa kelas VIII-6 SMP Negeri 1 Siantar. Instrumen penelitian berupa tes pilihan ganda dan angket persepsi siswa. Hasil penelitian menunjukkan nilai rata-rata hasil belajar siswa 87,93 lebih tinggi dari KKM (80). Uji t menunjukkan sig. = 0,000 < 0,05, sedangkan uji regresi menghasilkan R² = 0,795 dengan sig. = 0,000. Hal ini membuktikan bahwa penerapan Discovery Learning berbantuan Geogebra berpengaruh positif dan signifikan terhadap hasil belajar siswa
The Effect Of The TPS (Think Pair Share) Learning Model Used By The Geogebra Application On The Ability Of Understanding Mathematical Concepts Of Grade X Munthe, Arianto; Tambunan, Lois Oinike; Sinaga, Christa Voni Roulina
PIJAR: Jurnal Pendidikan dan Pengajaran Vol. 3 No. 2 (2025): April
Publisher : CV Putra Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58540/pijar.v3i2.1294

Abstract

This study aims to determine the effect of the TPS (Think Pair Share) learning model assisted by the Geogebra application on the mathematical concept understanding ability of class X students of SMK Negeri 1 Siantar. The sampling technique used in this study is Probability Sampling. In this study, the type of experimental research used is Probability Sampling with a type of research design, namely One Shot Case Sturdy. In this type of design, the researcher will use a class unit where the researcher will provide a solution (treatment) to students for several periods. Based on the results of data analysis and discussion, it can be concluded that there is a positive and significant influence of the TPS (Think Pair Share) learning model assisted by the Geogebra application on the ability to understand mathematical concepts of class X students of SMK Negeri 1 Siantar. This influence can be seen from the regression equation Y = 63,570 + 1.271 with a regression coefficient of 1.271. Through the t-test, it can be seen that t_count>t_table = (11,361>6,742) indicates that significance and by using the coefficient of determination can be seen the magnitude of the influence is 82.2%.
Ethnomathematics: Exploring Traditional Games in Mathematics Learning Lois Oinike Tambunan; Izwita Dewi; Lasker Pangarapan Sinaga
MATHEMA: JURNAL PENDIDIKAN MATEMATIKA Vol. 7 No. 2 (2025): MATHEMA
Publisher : Universitas Teknokrat Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33365/jm.v7i2.141

Abstract

This study aims to examine ethnomathematics in traditional games, particularly among the Batak Toba ethnic group, where mathematical concepts such as geometry, number operations, relationships between lines, the concept of congruence, probability, number patterns, and speed are present. The traditional games analyzed in this study include Marsitekka, Margala, and Pocca Piring. This research employs qualitative descriptive approach,where the subjects of this research are the three types of traditional games mentioned earlier. The data collection techniques used in this study include observation, field notes, and documentation. Integrating traditional games into mathematics learning provides benefits by visualizing mathematical concepts in a tangible form, making it easier for students to understand mathematical learning.
Co-Authors Adi Putra Ginting Amin Fauzi, Amin Br Regar, Indryanti Saputri Br Ujung, Elisabet Pebrina Buana Maria Gultom Butar-butar, Afriani Canni Loren Sianturi Christa Voni Raulina Sinaga Christa Voni Roulina Sinaga Damanik, Martha Hart Damanik, Putri Sepriyanti Debora Caronika Agustria Rajagukguk Devi Fierda Situmorang Devi Ratna Siahaan Dwi Cici Kirana Dwi Pratiwi Elisa, Tuti Elvis Napitupulu Eunike Juliani Lestari Sitanggang Firman Pangaribuan Gayus Simarmata, Gayus Golda Novatrasio Sauduran Gultom, Ardo Novandika Gultom, Binsar Tison Gusar, Martua Reynhat Sitanggang Handoco, Ewin Harianja, Derma Helen Ronauli Simanjuntak Helen, Helen Hotman Simbolon Imeliana Saragih Irna Denanda Br Pasaribu Izwita Dewi Julius Martunas Sihite Lasker Pangarapan Sinaga Lestary, Ayunda Lumban Toruan, Marlina Olivia Malau, Octo Laura manik, ria retno Marbun, Valentina Marbun, Yanty Maria Marbun, Yanty Maria Rosmauli Maria Tamara Simangunsong Masni Veronika Situmorang Munthe, Arianto Natalina Purba Pasaribu, Hevi Cricencia Angelina Pasaribu, Sunggul Pasaribu, Torop Marombun Puja Anjani Purba Purba, Yoel Octobe Qarin Khoirani Ramadani Ramadani Rebecca Anugrah Paskah Tambunan Retno, Ria Reydy A. Silalahi Rezesa Febiola Simanjuntak Rick Hunter Simanungkalit, Rick Hunter Sahat Saragih Sahat Sitompul Sauduran, Golda Novatrasio Serlina Oktavia Boru Silaban Siagian, Gunaria Siahaan, Theresia Monika Siahaan, Thesa Laora Miranda Siallagan, Adi Yoshua Siallagan, Frengky Sianturi, Monalisa Frince Sidabutar, Ropinus Sihombing, Levi Pandapotan Silalahi, Mastiur Verawaty Simajuntak, Merry Kristin Simamora, Rianita Simanjuntak, Hendra Simanjuntak, Paska Amoi Sinaga, Chirsta Voni Rouina Sinaga, Christa Voni Roulina Sinaga, Sanni Sirait, Debora Sitanggang, Fortina Julianta Sitompul, Pardomuan Situmorang, Masni Veronika Siva Anastasia Munthe Tambunan, Janwar Tanjung, Sahima Rosana Tanty Novelia Tarigan Tiur Yohana Tampubolon Vicky Ana Rebecca Sitompul Yan Verico Manik Yoel Octobe Purba YOEL OCTOBE PURBA Yoel Octobe Purba Yoel Octobe Purba Yuly Christina Hutasoit