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All Journal Jurnal Pendidikan dan Pembelajaran Khatulistiwa (JPPK) Science and Technology Indonesia
Suci Widianingsih
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Decision Sciences, Operations Research & Management Education Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Other

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PEMBELAJARAN PROYEK DALAM MENGEMBANGKAN KERJA SAMA MELALUI PERMAINAN BALOK PADA ANAK USIA 5-6 TAHUN Widianingsih, Suci; ., Marmawi; Lestari, Sri
Jurnal Pendidikan dan Pembelajaran Khatulistiwa Vol 2, No 9 (2013): September 2013
Publisher : Jurnal Pendidikan dan Pembelajaran Khatulistiwa

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Abstract

Penelitian ini bertujuan untuk mengetahui kegiatan pembelajaran proyek, bentuk kerja sama kerukunan dan respon anak terhadap pembelajaran proyek dalam mengembangkan kerja sama melalui permainan balok. Penelitian ini dilakukan dengan metode penelitian kualitatif menggunakan pendekatan penelitian deskriptif. Sampel penelitian ini adalah 1 orang guru dan 28 anak yang terdapat di kelas B. Hasil analisis data menunjukkan bahwa pembelajaran proyek dalam mengembangkan kerja sama melalui permainan balok membuat anak belajar mengembangkan kerja sama sesama anggota kelompoknya. Bentuk kerja sama yang dilihat peneliti saat anak-anak menyusun balok bersama anggota kelompoknya adalah bentuk kerja sama kerukunan yang mencakup tolong menolong dan gotong royong. Respon anak senang ketika menyusun balok menjadi bangunan yang mereka sukai, namun dari 6 kelompok terdapat 2 kelompok yang belum dapat bekerja sama sesama anggota kelompoknya dengan hasil persentase 67% dari 100%. Kata Kunci: Pembelajaran proyek, Kerja sama, Permainan balok Abstract: This study aims to determine the project learning activities, forms of cooperation and harmony response to the child's learning in a project to develop cooperation through game blocks. This research was conducted using qualitative research using descriptive research approach. The sample was 1 teacher and 28 children who are in class B. Results of data analysis showed that the learning projects in developing cooperation through game beams make children learn to develop cooperation fellow group members. Forms of cooperation are seen when researchers kids the block with the rest of the group is a form of cooperation that includes helping each harmony and mutual cooperation. Response of children to be happy when putting together the building blocks they like, but there are 2 groups of 6 groups who have not been able to work together with other members of his group the percentage 67% from 100%. Keywords: Learningp project, Cooperation, Game block
Thermal Conversion of Coral Waste and its Utilization as Low-Cost Catalyst for Biodiesel Production Widianingsih, Suci; Yanti , Ika; Kamari, Azlan; Fatimah, Is
Science and Technology Indonesia Vol. 9 No. 4 (2024): October
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.4.866-875

Abstract

This study investigates the thermal conversion of waste coral and its utilization as a heterogeneous catalyst for biodiesel production from soybean oil. In this work, waste coral is calcined at varied temperatures of 800, 900, and 1000°C, and the effect of the calcination temperature on the physicochemical character of the solid is evaluated through Fourier-transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and basicity measurement. The results show that the higher temperature facilitates the conversion of CaCO3 of the aragonite and calcite phases in raw waste coral into CaO, achieving a complete conversion at the temperature of 1000°C. Thermal conversion influences the increased surface basicity of the solid, which is associated with the higher activity for biodiesel production. Further studies on the obtained CaO as a catalyst demonstrate the catalyst dosage and the methanol-to-oil ratio as significant factors for fatty acid methyl ester production. The highest yield of 98.7% is achieved after a 3 hours reaction with 8 wt.% catalyst dosage and 9:1 methanol-to-oil ratio. The catalyst exhibits stability with an insignificantly decreased yield until the fifth usage cycle. The optimum conditions and reusability features of the calcined waste coral suggest that waste coral is a favorable CaO catalyst source for biodiesel production.
Co-Authors Is Fatimah Kamari, Azlan Marmawi R . Mudinillah, Adam Yanti , Ika