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All Journal Jurnal Akademika Kimia Jurnal Pendidikan dan Pembelajaran Kimia (JPPK)
Mutia Ardila
Universitas Negeri Medan
Chemistry Education

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Development of Interactive Google Sites-Based Learning Media to Improve Senior High School Students’ Understanding of Stoichiometry Mutiara Agustina Nst.; Rabiah Afifah Daulay; Dwy Puspita Sari; Mutia Ardila
Jurnal Pendidikan dan Pembelajaran Kimia Vol. 15 No. 1 (2026): Jurnal Pendidikan dan Pembelajaran Kimia
Publisher : Universitas Lampung

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Abstract

Chemistry is one of the fields of science with abstract concepts and unique vocabulary. That is why chemistry is considered as one of the subject matter that is considered difficult. Stoichiometry is one of the chemistry materials that is considered difficult due to its abstractness. This study aimed to develop and validate an interactive web-based learning media using Google Sites to enhance students’ understanding of stoichiometry. The research employed a Research and Development (R&D) method, including needs analysis, design, development, and validation stages. Data were collected in qualitative and quantitative forms, with quantitative data obtained through validation questionnaires using a 5-point Likert scale. The validation involved two expert validators, consisting of media and material experts. The results showed a validity score of 89% from media experts and 90% from material experts, with an overall average of 90%, categorized as highly feasible. The developed media includes interactive features such as virtual laboratories, learning videos, and 20 online quiz questions. These findings indicate that the Google Sites-based learning media is valid and suitable for supporting chemistry learning, particularly in improving students’ engagement and understanding of stoichiometry.
Analysis of Sodium Content and Estimated Daily Intake from Shellfish Consumption: Case Study in Banda Aceh Mutia Ardila; Rizky Kurniawan; Hadi Kurniawan; Muhammad R. Harahap
Jurnal Akademika Kimia Vol. 14 No. 3 (2025)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2025.v14.i3.pp163-168

Abstract

This study aims to analyze sodium (Na) levels and estimate the daily intake (EDI) from the consumption of three shellfish species: blood mussels (Anadara granosa), kepah (Polymesoda erosa), and nipah (Geloina coaxans) obtained from Al Mahira Market and the Alue Naga area in Banda Aceh. Sodium concentrations were determined using Atomic Absorption Spectrophotometry (AAS). The results showed that sodium levels ranged from 1186 to 4656 mg/kg (wet weight). The highest EDI was found in blood mussels from Al Mahira Market at 0.997 mg/kg body weight/day (3.489% of the recommended daily sodium intake). In comparison, the lowest was observed in nipah clams from the exact location at 0.247 mg/kg body weight/day (0.866%). Overall, sodium intake from shellfish in both locations contributed less than 5% of the daily sodium limit. These findings indicate that shellfish consumption poses a low sodium-related health risk, although frequent or high intake may still contribute to long-term hypertension risk.
Co-Authors Alfira Julian Pratiwi Ekin Dwi Arif Kurniawan Hadi Kurniawan Muhammad R. Harahap Mutiara Agustina Nst. Rabiah Afifah Daulay Rafidah Almira Samosir Rizky Kurniawan Sari, Dwy Puspita