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All Journal Jurnal Inovasi Penelitian dan Pembelajaran Fisika Indonesian Science Education Journal (ISEJ)
Lais Shifa Aulia
Indraprasta PGRI University
Agriculture, Biological Sciences & Forestry Education Physics Other

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PERBANDINGAN SIFAT OPTIK CDOTS BERBAHAN DAUN BINAHONG (ANREDERA SCANDES L.) SEGAR DAN KERING MENGGUNAKAN METODE BOTTOM UP Yuliana Sri Asmara; Anggita Rizki Maharani; Lais Shifa Aulia; Irnin Agustina Dwi Astuti
Jurnal Inovasi Penelitian dan Pembelajaran Fisika Vol 3, No 2 (2022): Volume 3 Number 2 Agustus 2022
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jippf.v3i2.56837

Abstract

Carbon dots (Cdots) are synthesizable nanoparticles. One of them is taking advantage of binahong leaves (Anredera scandes L.). In this research, the synthesis of Cdots fresh binahong leaves and dried binahong leaves has been carried out. Using buttom up method and UV-Vis characterization. Microwave heating for 30 minutes. Meanwhile, the physical properties of the resulting Cdots color are fresh Binahong leaves showing a yellowish green color, while the physical properties of dry Binahong leaves show a brownish green color. Cdots fresh binahong leaves has a light absorbance spectrum at a wavelength of 200-800 nm with the highest intensity measured at a wavelength of 323 and the energy value of the band gap of 1.503 Ev. Meanwhile, for Cdots, dried Binahong leaves have a light absorption spectrum at a wavelength of 200-800 nm with the highest intensity measured at a wavelength of 361 nm and an energy value of 8.231 Ev band gap.
Implementing Online Learning Models to Strengthen Student Characteristics in Physics Education during the Covid-19 Pandemic Diva Alkhadia Rana; Lais Shifa Aulia; Reinhard Andrianus
ISEJ : Indonesian Science Education Journal Vol. 5 No. 3 (2024): September
Publisher : Yayasan Darussalam Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62159/isej.v5i3.1767

Abstract

The Covid-19 pandemic has significantly transformed higher education, shifting conventional face-to-face instruction to online learning and creating both challenges and opportunities for student development. This study aimed to analyze the implementation of online learning models and their influence on student characteristics in the Physics Education Study Program at Universitas Indraprasta PGRI. A descriptive qualitative approach was employed with purposive sampling of undergraduate students who had experienced online learning for at least two semesters, and data were collected through questionnaires, semi-structured interviews, and documentation. Thematic analysis was applied to identify patterns related to student learning strategies, the use of digital platforms, and character formation during online learning. The results revealed that students employed varied strategies such as mind mapping, blended learning, and group discussions via applications like WhatsApp, Zoom, and Google Classroom to sustain learning, while challenges included unequal internet access, limited technological facilities, and varying levels of readiness. Despite these obstacles, online learning contributed to the development of key character values, including independence, responsibility, discipline, and adaptability, which are essential in preparing students for the demands of the 21st century. The novelty of this study lies in its focus on the affective dimension of online learning, emphasizing character formation alongside cognitive achievement. The findings imply that universities and policymakers should design online learning systems that not only address technological barriers but also intentionally integrate character education to ensure holistic student development in future digital learning environments.
Co-Authors Anggita Rizki Maharani Diva Alkhadia Rana Irnin Agustina Dwi Astuti Reinhard Andrianus Yuliana Sri Asmara