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All Journal Orbital: Jurnal Pendidikan Kimia Al-DYAS : Jurnal Inovasi dan Pengabdian kepada Masyarakat Jurnal Ekonomi, Manajemen Bisnis, Syariah dan Teknologi
Roza Linda
Unknown Affiliation
Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Social Sciences Other

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Development of Interactive Multimedia Based on Android Integrated Problem Based Learning (PBL) to Improve Students’s Mastery of Concepts Bintarti; Roza Linda; Rasmiwetti
Orbital: Jurnal Pendidikan Kimia Vol. 8 No. 1 (2024): Orbital: Jurnal Pendidikan Kimia
Publisher : Chemistry Education Department of Education and Teaching Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/ojpk.v8i1.22057

Abstract

The results of the pre-research concept mastery test showed students' low mastery of redox and electrochemical concepts. The aim of this research is to produce an Android-based interactive multimedia product integrated with PBL that is valid, practical and effective in the form of an APK. The research method is Development Research referring to the ADDIE development procedure. The research was conducted in the odd semester of 2022/2023. The research sample are 70 students of class XII MIPA SMA N 10 Pekanbaru.  Data was collected through multiple choice tests, essays, questionnaires. The developed product was validated by 3 material experts, and 3 media experts. The practicality tes was carried out by 4 chemistry teachers, 11 students in the one to one and small group stages. The implementation test was carried out at SMA Negeri 10 Pekanbaru.  The average validation results by material experts were 94.8% with very valid criteria and the average validation results by media experts were 95.8% (very valid). Practicality results for 4 chemistry teachers, it was 91.3 in the very practical category and 88.8% for 11 students in the very practical category. The n-gain test results showed an increase in concept mastery in the experimental class, namely 0.7 in the medium category and the control class with an n gain value of 0.3 (low). Based on the research results, it was concluded that the product that had been developed could increase students' mastery of concepts.
ANALISIS FUNDAMENTAL MENGGUNAKAN RETURN ON EQUITY (ROE), EARNING PER SHARE (EPS), PRICE EARNING RATIO (PER), PRICE TO BOOK VALUE (PBV) DAN DIVIDEND YIELD (DY) SEBAGAI DASAR KEPUTUSAN INVESTASI Saputra, Muhammad Romy; Roza Linda
Jurnal Ekonomi Manajemen Bisnis Syariah dan Teknologi Vol. 2 No. 1 (2023): Jurnal Ekonomi, Manajemen Bisnis, Syariah dan Teknologi
Publisher : Yayasan Azam Insan Cendikia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62833/embistek.v2i1.28

Abstract

This research was conducted at a coal mining company listed on the Indonesia Stock Exchange. The purpose of this study is to make decisions in investing in the coal mining sub-sector. This research is a quantitative descriptive research. The data used in this study is secondary data by taking a sample of 6 issuers. Sampling was done by purposive sampling technique. The research location is a coal mining company listed on the Indonesian Stock Exchange. Based on the research results, the results of this study resulted in 27 recommendations for investment decisions in the coal mining sub-sector in the 2016-2020 period. The author recommends choosing two of the six samples, namely ADRO and BSSR shares because based on their fair prices ADRO and BSSR are still very low and as long term stocks and coal mining companies it is very possible for ADRO and BSSR to have even higher prices.
Upaya Peningkatan Aktivitas dan Hasil Belajar Murid melalui Model Discovery Learning Berbantuan Bamboozle pada Materi Stoikiometri Kelas X.1 SMA Negeri 12 Pekanbaru Deprimasyah Deprimasyah; Roza Linda; Sri Haryati
Al-DYAS Vol 5 No 2 (2026): JUNI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/aldyas.v5i2.10546

Abstract

The low learning activity and cognitive learning outcomes of Class X.1 students at SMA Negeri 12 Pekanbaru on stoichiometry formed the basis for conducting this study, particularly because teacher-centered learning caused students to be less active in asking questions, discussing, and independently constructing conceptual understanding. This study aims to improve students’ learning activity and cognitive learning outcomes through the implementation of the Discovery Learning model assisted by Bamboozle media. This study used the Classroom Action Research (CAR) method, which was implemented in two cycles, with each cycle including the stages of planning, implementation, observation, and reflection. The research subjects were 40 students of Class X.1 at SMA Negeri 12 Pekanbaru. Data were collected through observation of learning activity, learning outcome tests, and documentation, then analyzed descriptively and quantitatively. The results showed that students’ learning activity increased from 45.05% in Cycle I to 52.61% in Cycle II. Cognitive learning outcomes also improved, as indicated by an increase in the average score from 76.00 in Cycle I to 83.00 in Cycle II, while classical learning mastery increased from 37.5% to 80%. The conclusion of this study affirms that the implementation of the Discovery Learning model assisted by Bamboozle media can improve students’ learning activity and cognitive learning outcomes on stoichiometry. The implications of this study indicate that integrating student-centered learning models with game-based media can serve as an effective, interactive, and enjoyable alternative for chemistry learning.
Co-Authors Bintarti Deprimasyah Deprimasyah Rasmiwetti Saputra, Muhammad Romy Sri Haryati