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All Journal SPIN: Jurnal Kimia & Pendidikan Kimia KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia
Pratiwi, Ika Bella
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Chemistry Education

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Analisis Peningkatan Literasi Sains dan Kemampuan Bernalar Kritis Siswa yang menggunakan Bahan Ajar Liveworksheets Prasetya, Cyndi; Pratiwi, Ika Bella; Maisarah
KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia Vol 6 No 2 (2023): Katalis: Jurnal Penelitian Kimia dan Pendidikan Kimia
Publisher : Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/katalis.v6i2.8820

Abstract

Kemampuan literasi sains sangat penting untuk ditingkatkan pada diri siswa karena salah satu tolok ukur kemampuan kognitif berdasarkan PISA yaitu literasi sains. Selain literasi sains, terdapat kemampuan bernalar kritis yang juga perlu ditingkatkan pada diri siswa karena merupakan salah satu karakter Profil Pelajar Pancasila. Dengan demikian, dilakukan penelitian ini yang bertujuan untuk menganalisis peningkatan literasi sains dan bernalar kritis siswa setelah menggunakan bahan ajar liveworksheets pada materi sifat koligatif larutan di SMA. Metode penelitian yang digunakan yaitu kuantitatif dengan desain Pre-Experimental tipe one-group pretest-postest. Sampel pada penelitian ini hanya satu grup siswa yaitu siswa kelas XII MIA-1 SMA Negeri 1 Langsa yang berjumlah 32 orang. Teknik pengumpulan data yang digunakan yaitu tes dan observasi. Analisis data yang digunakan yaitu: persentase rerata skor, dan N-Gain. Hasil penelitian menunjukkan bahwa jumlah siswa yang mempunyai literasi sains tingkat tinggi hanya 9,37% pada pretes, dan mengalami penambahan jumlah siswa menjadi 87,50% pada saat postes. Jumlah siswa yang mempunyai bernalar kritis tingkat tinggi sebanyak 43.75% ketika pretes, dan jumlahnya bertambah menjadi 90,63% ketika postes. Dengan demikian dapat disimpulkan bahwa penggunaan bahan ajar liveworksheets dapat memberikan kontribusi peningkatan skor dan jumlah siswa yang berkategori tinggi pada literasi sains maupun bernalar kritis.
COMPUTATIONAL STUDY: THE EFFECT OF BASIS SET ON THE ENERGY STABILITY OF HYDROCARBONS AND HALOGENIC ACIDS Nilawati; Priadana, Yogi Surya; Priadana, Yoga Surya; Azani, Zainina; Solin, Mardia; Hamidah; Pratiwi, Ika Bella
SPIN JURNAL KIMIA & PENDIDIKAN KIMIA Vol. 6 No. 2 (2024): July - December 2024
Publisher : UIN Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/spin.v6i2.10289

Abstract

This research is motivated by the many base sets contained in computational calculations. The selection and use of base sets play an important role in determining the accuracy of the calculation of theoretical molecular properties as well as in lowering the BSSE (base set superposition error). This study aims to analyze the influence of base set variations on the calculation of hydrocarbon and halogen acid energy stability using computational methods. The research method used is an experimental method. Molecular modeling using Avogadro software with the molecules used are halogen acid molecules and alkanes C1 - C5. The calculation uses NwChem software with the DFT method, functional BL3YP with 4 different base sets, namely STO-3G, 321-G, cc-pVDZ, and cc-pVTZ. The resulting data is then analyzed and compared with database calculations. The results of the study show that the higher the base set used, the more accurate the calculation results obtained. The base set that shows the most accurate results in this study is cc-pVTZ. However, it should be noted that the most accurate set bases can be different for each molecule. 
PENGEMBANGAN MEDIA INTERAKTIF MENGGUNAKAN ARTICULATE STORYLINE 3 PADA MATERI KONSEP ASAM BASA Pratiwi, Ika Bella; Hasby; Ahmad Fauzi Syahputra Yani
KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia Vol 8 No 2 (2025): Jurnal Katalis Vo.8 No.2 Tahun 2025
Publisher : Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/katalis.v8i2.12000

Abstract

This research is an innovation in learning media development, by creating interactive media based on Articulate Storyline 3 on acid-base concept. The method used is Research and Development (R&D) with the ADDIE development model. Data were collected through validation sheets filled out by material and media experts, as well as response questionnaires involving teachers and students. The trial was conducted on 28 students of class XI IPA 2 at SMAN 2 Langsa. The validation results showed a score of 0.87 from the material expert and 0.93 from the media expert. In addition, the practicality results based on response questionnaires from teachers and students reached 90.4%. Thus, the interactive media that has been developed is declared feasible and practical to be used in learning acid-base concepts.
Co-Authors Ahmad Fauzi Syahputra Yani Azani, Zainina Cyndi Prasetya HAMIDAH Hasby Maisarah NILAWATI Priadana, Yoga Surya Priadana, Yogi Surya Solin, Mardia