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All Journal Indonesian Journal Economic Review (IJER) International Journal of Didactic Mathematics in Distance Education
Azizah, Farhatul
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Economics, Econometrics & Finance Mathematics

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From confusion to fun: Box Fraction Media for better understanding of fractions Putri, Karin Hernelia; Azizah, Farhatul; Kamelia, Nabila Putri; Stiven, Jepri; Susanti, Elsa; Zulkardi, Zulkardi; Mulyono, Budi; Meryansumayeka, Meryansumayeka
International Journal of Didactic Mathematics in Distance Education Vol. 2 No. 2 (2025): ijdmde
Publisher : Universitas Terbuka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33830/ijdmde.v2i2.12333

Abstract

Students' low understanding of fractions is a major obstacle to achieving basic mathematical competence at the primary school level. To address this issue, innovative, engaging, and easy-to-understand learning media are required to help students grasp fraction concepts more effectively. This study aims to design and evaluate a participatory and interactive game-based learning medium called Box Fraction Fun. The Research and Development (R&D) method was employed, using the ADDIE model. Validation by two subject matter experts and two media experts showed that the medium was considered suitable to highly suitable based on a four-level suitability scale. Practicality was assessed through questionnaires given to three fourth-grade students and one teacher at a public elementary school in Bukit Lama district, Palembang, with results indicating that the medium was “very practical.” The effectiveness of the medium was evaluated using pre-test and post-test scores analyzed with N-gain calculations, which demonstrated significant improvement in students’ understanding of fractions. These findings suggest that Box Fraction Fun is highly valid, practical to use, and effective in supporting students’ learning. Theoretically, this study contributes to the literature on the development of interactive game-based mathematics learning media. Practically, it provides teachers with an innovative and effective tool to enhance students’ understanding of fractions.
The Effect of ROE, DER, and EPS on Stock Prices of IDX Energy Companies (2020–2024) Azizah, Farhatul; Komara, Acep
Indonesian Journal Economic Review (IJER) Vol. 6 No. 1 (2026): March
Publisher : Divisi Riset, Lembaga Mitra Solusi Teknologi Informasi (L-MSTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59431/ijer.v6i1.752

Abstract

This study examines the effects of Return on Equity (ROE), Debt to Equity Ratio (DER), and Earnings per Share (EPS) on the stock prices of companies in the IDX Energy sector during the 2020–2024 period. The research is motivated by the high volatility in the energy sector due to the COVID-19 pandemic, post-pandemic recovery, and global commodity price fluctuations, which may influence investor responses to firm fundamentals.Using a quantitative approach, this study analyzes secondary data from 15 companies selected through purposive sampling, resulting in 75 firm-year observations. The data were analyzed using panel data regression.The results show that ROE and DER have positive but statistically insignificant effects on stock prices, while EPS has a positive and statistically significant effect. Simultaneously, all variables significantly affect stock prices, with the model explaining 56.45% of the variation.These findings indicate that EPS is the most relevant financial indicator in explaining stock price movements of IDX Energy companies during the study period.
Co-Authors Acep Komara Kamelia, Nabila Putri Meryansumayeka Meryansumayeka Mulyono, Budi Putri, Karin Hernelia Stiven, Jepri Susanti, Elsa Zulkardi Zulkardi