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PENINGKATAN HASIL BELAJAR MATEMATIKA MATERI BANGUN DATAR MELALUI MODEL PROBLEM BASED LEARNING PADA PESERTA DIDIK KELAS IV UPT SD NEGERI 064990 MEDAN JOHOR Imelda; Hanna Riah Uhur Girsang; Dea Sintia Damanik; Sihombing, Christofel Anggi; Agnes Margaret Sinaga
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 11 No. 03 (2026): Volume 11 No. 03, September 2026 Release
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v11i03.59472

Abstract

The low mathematics learning outcomes in the material of plane figures is still a problem faced by elementary school students. This condition is caused by learning that is still centered on the teacher so that students are less active in building conceptual understanding and solving problems. This study aims to improve mathematics learning outcomes in plane figures through the application of the Problem Based Learning (PBL) model to fourth-grade students of UPT SD Negeri 064990 Medan Johor. This study is a Classroom Action Research (CAR) that uses the Kemmis and McTaggart model with two cycles, each of which includes the planning stage, action implementation, observation, and reflection. The research subjects were 19 students in grade IV-C. Data collection techniques were carried out through observation, learning outcome tests, and documentation, while data were analyzed using quantitative and qualitative descriptive techniques. The results of the study indicate that the application of the Problem Based Learning model can significantly improve students' mathematics learning outcomes. The percentage of classical learning completion increased from 47.37% in the initial condition (pre-test) to 73.68% in Cycle I and reached 89.47% in Cycle II, with a class average score of 82.84, thus exceeding the research success indicator, which is at least 80% of students achieving a score above the Minimum Competency (KKM) of 72. Furthermore, teacher activity increased from 83.33% to 94.44%, while student activity increased from 75% to 91.67%. Thus, the implementation of the Problem-Based Learning model has proven effective in improving mathematics learning outcomes in plane geometry and encouraging active, collaborative, and student-centered learning.
Pengaruh Struktur Modal dan Efisiensi Modal Kerja Terhadap Profitabilitas pada PT Aneka Tambang Tbk Imelda; Puji Muniarty; Mukhlis
HORIZON: Indonesian Journal of Multidisciplinary Vol. 4 No. 3 (2026): HORIZON: Indonesian Journal of Multidisciplinary
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/hijm.v4i3.6405

Abstract

This study aims to analyze the effect of capital structure as measured by Debt to Equity Ratio (DER) and working capital efficiency as measured by Working Capital Turnover (WCTO) on profitability as measured by Return on Assets (ROA) at PT Aneka Tambang Tbk for the period 2015–2024. The study uses a quantitative approach with an associative research type. The data used are secondary data obtained from the annual financial statements of PT Aneka Tambang Tbk during the study period. The sample was determined using a purposive sampling technique and analyzed using multiple linear regression with the help of SPSS version 22. The results of the study indicate that capital structure and working capital efficiency have an important role in influencing company profitability. Optimal capital structure management can support an increase in the company's ability to generate profits, while the efficient use of working capital contributes to the smooth running of operational activities and improved financial performance. Together, these two variables provide a strong contribution in explaining changes in company profitability. These findings indicate that the success of PT Aneka Tambang Tbk in increasing profitability is inseparable from the company's ability to manage funding sources and utilize working capital effectively. Therefore, efficient management of capital structure and working capital needs to be a primary concern in efforts to improve the company's financial performance.
Co-Authors Ade Novita Sari Harahap Adlis Santoni Adrian Pane, Gandi Agnes Margaret Sinaga Ahmad Amirul Sir Ahmad Farid Ahmad Ripai Aldy Rinaldi, Aldy Alfi Rahmi Alghifari Mahdi Igamo Ali Machmud Badarudin Anggriany, Martania Ani Marlia Anita Kurnia Sari Annisa Aprella, Vena Ariba Solin Arief Armando Ariescha, Nurul Arista Purnama, Rifky Arsidin Batubara Aryanes Asmara, Gita Azwaldi Azwardi Bambang Baskoro, Yudha Buhori Connie Cutyanti, Cici Darinda Sofia Tanjung Dea Sintia Damanik Devita Dwi Kinanti Devita Syaharani Dina Octaria Dingin Sibayang Dwi Dwi Yunita, Dwi Dyan Wulan Sari Hs Eka Titin Nurmala Sari Elisabet Malau, Novia Emriadi Eva Dolorosa Fajri, Nova Fakhrurrozi Fanie Indah Manik Fathul Zannah Febrina, Shelly Feri Oswari Fernando T, Franky FITRIA NINGSIH Fransiska Tarigan , Nurani Gibran, Kholil Hafidhun Annas Hakam Ali Niazi Halimatusa’diah Hanna Riah Uhur Girsang Harunurrasyid, Harunurrasyid Heka Maya Sari Br Sembiring Hendra, Adesius Herka, Sri Nadra Hidayat, Ravindra Safitra Hikmah , Maulida Husna Imro'athush Sholihah Husnul Madihah Indah Rahayu Lestari Ismar Agustin IVAN ANDRI GUNAWAN Ivanda, Riko Jarkawi Jufri, Qory Sidwa Kirana Bayu Saputra Kleden-Probonegoro, Ninuk Laiy, Victorianus Lugianus Andika Roy, Steven Luiz Figo Resda, Valentino Lukman Martunis M Rajagukguk, Paskah MAGHFIRAH Maharani Putri, Dian Mardalena Marthauli Perdede Mawar Fauzia R Mega Fatimah Rosana Misbahul Muna MUHAMMAD TEGUH, MUHAMMAD Mukhlis Muliyadi Mulyanti Nabilla Nadella Nathalia Ramadhanti Nazarena, Yuli Hartati Nazarena, Yunita Neti Hartaty Nisa Afinah Nisrina Nola Riski Amelia Novani Maryam Rambe Novira Kusrini Nur Alifah Syahrani Nur Indri Yani Nurliasari, Suci Nursalamah Pernanda, Perdi Puji Muniarty Putri, Yunike Rahma Nida Rahmatullah Ramadhani Abustan Ratmoro, Nayumi Fadila Ratna Ningsih Retno Fuji Oktaviani Rezky Aulianur Syahbana Rinny Meidiyustiani Rizqa Annisa Dwiatmoko Salasa Nilawati, Nurul Sarinda, Maria Elsanda Riva Sartono Sartono, Sartono Sihombing, Christofel Anggi Silaban, Patri Sirait, Ana Sister, Maya Gian Siti Kholipah Sitti Murdiana Sri Hayati, Sri Suci Anugrah, Adis Sumarsih Suryati Susanna Padang, Enja Syarifa Atika Teja Kusuma, Resin Putra Utami Harjantini, Utami Wahyu Maulana, Wahyu Waldi Novi Yarsah Wijaya, Febri Yessi Yohana Yohanes, Vian Yuniarti, Emylia Yunika Lestaria Ningsih