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All Journal Edukasi : Jurnal Penelitian dan Artikel Pendidikan Science, Technology, and Communication Journal
Ningrum, Yunita
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Computer Science & IT Education Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology

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Peningkatan Keterampilan Membaca Pemahaman Melalui Model Cooperative Integrated Reading And Compotition Siswa Kelas 4 SD Ningrum, Yunita; Kristin, Firosalia
Edukasi: Jurnal Penelitian dan Artikel Pendidikan Vol 11 No 1 (2019)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (317.744 KB) | DOI: 10.31603/edukasi.v11i1.2682

Abstract

The learning process requires several skills that need to be mastered by students, one of which is reading comprehension skills. The learning process in Kutowinangun 04 of elementary school has problems with the low reading comprehension skills. The low reading skills resulted in the results of reading comprehension skills not being optimal. This study aims to improve reading comprehension skills through the application of the Cooperative Integrated Reading and Compotition model. Data collection techniques used were observation sheets to collect data on reading comprehension skills and student activities supported by documentation to prove activities during the learning process. The data analysis technique uses quantitative data and qualitative data analysis. The results of the study of reading comprehension skills using the Cooperative Integrated Reading and Compotition (CIRC) model showed an increase in the percentage of the average reading comprehension skill based on the category of 11.78%, that is from 60.34% (categories need guidance) in pre-action which increased to 72 , 12% (good category) in the first cycle, then increased again by 18.02% from 72.12% (good category) in the first cycle increased to 90.14% (very good category) on cycles II. It can be concluded that the application of the Cooperative Integrated Reading and Compotition (CIRC) method can improve reading comprehension skills.
Properties of BaTiO3 nanoparticles based on FTIR derived using Nephelium lappaceum L. leaf extract Dewi, Rahmi; Hamzah, Yanuar; Manik, Yohana; Ziliwu, Friska; Simbolon, Norsinta Ida; Syajali, Hidayati; Maulidya, Shintya; Ningrum, Yunita; Fatanah, Harum
Science, Technology and Communication Journal Vol. 4 No. 3 (2024): SINTECHCOM Journal (June 2024)
Publisher : Lembaga Studi Pendidikan and Rekayasa Alam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59190/stc.v4i3.268

Abstract

The properties of barium titanate (BaTiO3) nanoparticles synthesized with rambutan leaf extract (Nephelium lappaceum L.) were analyzed using Fourier transform infrared spectroscopy (FTIR) characterization techniques. Rambutan leaf extract contains bioactive compounds that have the potential to enhance unique physical and chemical properties. This study aims to analyze the properties of the nanoparticles and to characterize the functional groups present in BaTiO3 nanoparticles synthesized using rambutan leaves. The nanoparticle synthesis process involved extraction, followed by the preparation of a BaTiO3 solution and doping. The FTIR spectrum displayed characteristic peaks identifying the presence of functional groups. The results indicated that the region 3500 – 3200 cm-1 corresponds to O–H groups (alcohol and phenolic), the region 1700 – 1600 cm-1 to C=O groups (carbonyl), the region 1600 – 1500 cm-1 to C=C groups (alkene), and the region 1200 – 1000 cm-1 to C–O groups (ether). Each functional group exhibits distinct properties.
Co-Authors Fatanah, Harum Firosalia Kristin Manik, Yohana Maulidya, Shintya Rahmi Dewi Simbolon, Norsinta Ida Syajali, Hidayati Yanuar Hamzah Ziliwu, Friska