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Mendrofa, Ratna Natalia

Universitas Nias

Author-ID : 5501458

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PENGARUH MODEL PEMBELAJARAN DISKURSUS MULTI REPRESENTASI (DMR) TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIS SISWA UPTD SMP NEGERI 7 GUNUNGSITOLI Giawa, Nurul Ihsani; Telaumbanua, Yakin Niat; Lase, Sadiana; Mendrofa, Ratna Natalia
PENDIDIKAN SAINS DAN TEKNOLOGI Vol 12 No 4 (2025): in Press
Publisher : STKIP PGRI Situbondo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47668/edusaintek.v12i4.2064

This study is based on the results of a preliminary study conducted by researchers at UPTD SMP Negeri 7 Gunungsitoli, found problems, namely (1) the learning model in the classroom is less varied and (2) the lack of students' mathematical problemsolving abilities in solving mathematical problems. The purpose of this study was to determine the effect of the Multi Representation Discourse (DMR) learning model on the mathematical problemsolving abilities of students at UPTD SMP Negeri 7 Gunungsitoli. This type of research is quantitative research using a quasiexperimental method with a pretest-posttest control group design. The population of this study was grade VIII students and the research sample consisted of two classes, namely VIII-C as the experimental class and VIII-A as the control class. The instrument in this study was in the form of a mathematical problemsolving ability essay test. The results of the study obtained based on oneparty hypothesis testing obtained a tcount value = 5,283 and a ttable value = 1.678. Because tcount > ttable or 5,283> 1.678, reject H0 and accept Ha, which means "there is an influence of the Multi Representation Discourse (DMR) learning model on students' mathematical problemsolving abilities".

PENGARUH MODEL PEMBELAJARAN SELF-DIRECTED LEARNING TERHADAP KEMAMPUAN BERPIKIR KREATIF MATEMATIS SISWA UPTD SMP NEGERI 7 GUNUNGSITOLI Ndruru, Jenni Indah Mitra; Mendrofa, Ratna Natalia; Telaumbanua, Yakin Niat; Mendrofa, Netti Kariani
PENDIDIKAN SAINS DAN TEKNOLOGI Vol 12 No 4 (2025): in Press
Publisher : STKIP PGRI Situbondo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47668/edusaintek.v12i4.2065

This research was motivated by a preliminary study conducted at UPTD SMP Negeri 7 Gunungsitoli, which revealed that mathematics learning still employed conventional teaching models and that students' mathematical creative thinking skills were still relatively low. The aim of this study was to determine the effect of the Self-Directed Learning model on students' mathematical creative thinking abilities. The research method used was quantitative with a quasi-experimental approach and a pretest-posttest control group design. The population of the study was all eighth-grade students, with two classes selected through simple random sampling: class VIII-B (23 students) as the experimental group and class VIII-A (24 students) as the control group. The research instrument was an essay test designed to assess students' mathematical creative thinking skills. The results of the one-tailed hypothesis test showed that the calculated t-value was 5.118, which was greater than the t-table value of 1.682. Therefore, the null hypothesis (H₀) was rejected, and the alternative hypothesis (Hₐ) was accepted. Thus, it can be concluded that the Self-Directed Learning model has a significant effect on students' mathematical creative thinking abilities.

PENGARUH MODEL PEMBELAJARAN PROJECT BASED LEARNING (PJBL) TERHADAP HASIL BELAJAR MATEMATIKA SISWA SMP NEGERI 4 ALASA PADA KURIKULUM MERDEKA Zalukhu, Putri Wulandari; Mendrofa, Ratna Natalia; Telaumbanua, Yakin Niat; Lase, Sadiana
PENDIDIKAN SAINS DAN TEKNOLOGI Vol 12 No 4 (2025): in Press
Publisher : STKIP PGRI Situbondo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47668/edusaintek.v12i4.2066

This study was motivated by the low mathematics learning outcomes among students, their limited engagement during the learning process, and the unappealing presentation of learning materials at SMP Negeri 4 Alasa. The purpose of this research was to examine the effect of the Project-Based Learning (PjBL) model on students' mathematics learning outcomes within the Merdeka Curriculum. This experimental study employed a quasi-experimental method using a Nonequivalent Control Group Design. The research subjects included all seventh-grade students at SMP Negeri 4 Alasa, with class VII-B (30 students) serving as the experimental group taught using the PjBL model, while class VII-A (30 students) served as the control group using conventional teaching methods. The instrument used was an essay-based learning outcome test comprising five questions. Data analysis results showed that the calculated t-value was greater than the critical t-value (4.855 > 1.671). Thus, H0 was rejected, and Hₐ was accepted, indicating that the implementation of the Project-Based Learning (PjBL) model had a significant effect on students' mathematics learning outcomes under the Merdeka Curriculum.

Co-Authors Amin Otoni Harefa Andi Salfin Mendrofa Bakhtiar Alfin Angandrowa Hulu Bornok Sinaga Buulolo, Marnus Buulolo, Wining Helsavania Daeli, Veridiana Damai Sabari Zega Dwi Putri Farida Zebua Ernasari Zega Esti Jefriani Giaawa Fauzi , KMS Muhammad Amin Gea, Alfandy Gea, Harapan Giawa, Nurul Ihsani Gulo, Anugerah Setiawan Gulo, Irwan Krisman Gulo, Rahmat Juang Gulo, Rido Eli Halawa, Fariyanto Halawa, Notarius Halawa, Sahabat Harefa, Yarman Sia Hasratuddin Hasratuddin Hati Murni Pasti Berkat Waruwu Hia, Oidika Mawarni Hulu, Friska Putri Magdalena Hulu, Krisnatal Hulu, Mitra Verolina Hulu, Putrawan Hulu, Wikari HULU, YOSANA Iman Saro Ndraha Iman Saro Ndraha Indahwati Bu’ulolo Izwita Dewi Jelvin Ardianti Lase KMS Muhammad Amin Fauzi Laia, Wasnidar Lase, Lisa Desi Mawati Lase, Rama'eli Lase, Sadar Riang Lase, Shinta Putri Angraeni Lase, Trisna Wahyu Ningsi Lawuna, Memori Putra Mendrofa, Ignasius Mendrofa, Sri Jernih Popy Yamin Mendrofa, Versily Nazara, Lilis Pretty Ndraha, Mei Tri Murni Ndruru, Jenni Indah Mitra NETTI KARIANI MENDOFA Nov Elhan Gea Pardomuan Sitompul Rama'eli Lase Rama’eli Lase Rintis Kharisna Putri Zega Rusmini Rusmini Sadiana Lase Salima Zai Seya Setia Zega Sibarani, Sariayu Simamora, Elmanani Sitompul , Pardomuan Telambanua, Yakin Niat Telaumbanua, Happy Rahmat Saro Telaumbanua, Ovitarni TELAUMBANUA, RESTI JULIANA Telaumbanua, Ruti Faeri Telaumbanua, Windi Diantari Telaumbanua, Yakin Niat Waruwu, Defitriani Waruwu, Lilis Priska Waruwu, Mitra Novitri Waruwu, Nini Suryani Yulisman Zega Zai, Firman Pikir Zalukhu, Junitariang Zalukhu, Putri Wulandari Zebua, Boy Arwin Zebua, Jhoni Ardiman Zebua, Niscayarida Kristin Zebua, Siska Yanti Zebua, Syukur Marno Life Zega, Desman Anugrah Zega, Esther Purnama Sari

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