Identifikasi Melamin Dalam Susu Impor Yang Beredar Di Swalayan Brebes Dengan Metode Kromatografi Cair Kinerja Tinggi

Identification of melamine in import milk by HPLC (High Performance Liquid) method had been done. The system of HPLC is reversed phase which stationary phase colomn shimpack oktadesilsilina and the mobile phase is acetonitrile:water (50:50), as flow rate 1.0 mL/menit, detection wavelength was 240 nm. Indicated a linear correlation between the peak area versus concentration from 2-10 µg/mL with correlation coefficient (r) = 0.9988 and got the equation of regretion Y = 0.3771 X + 0.0151, with LOD = 0.5194 µg/mL and LOQ = 1.7356 µg/mL. Precision test concentration 6 µg/mL give variation coefficient (CV) = 4.263% and the precision of instrument 99.957%. The recovery test standart 4, 6, 8 µg/mL indicated the average 98.23 %. The result presents that sample I, II, III dan IV distributed in Brebes does not contain the melamine. Keywords : HPLC, Melamine, import milk

Inovasi Pembelajaran Berbasis Masalah Berbantuan Media Transvisi untuk Meningkatkan Keterampilan Proses Sains

This study aims to design problem based learning with transvisi media. The learning was applied to improve science process skills at electrolyte-nonelectrolyte material and concepts redox. Quasi experiment design with pretest-posttest control group was used. The differences between pre and post test of Science Process Skill was assumed as effect of treatment. Research subjects were two classgroup of X class in SMA N 1 Randublatung. One class was as control group and the other was as experiment group. They were determined through cluster random sampling. Science process skill was measured by multiple choice test-with reason. Data were analyzed by t-test. Results showed that the implementation of problem based learning at electrolyte-nonelectrolyte and redox can improve students\u27 science process skills, as well as students gave positive responce to learning implementation

Efektivitas Pembelajaran STEM dengan Model PjBL terhadap Kreativitas dan Pemahaman Konsep IPA Siswa Sekolah Dasar

Penelitian ini bertujuan untuk mengkaji efektivitas pembelajaran STEM dengan model PjBL terhadap kreativitas dan pemahaman konsep siswa sekolah dasar. Rancangan yang digunakan dalam penelitian ini adalah quasy experimental design. Subjek penlitian 60 siswa sekolah dasar yang terbagi dalam 2 kelas homogen yaitu 30 siswa di kelas eksperimen dan 30 siswa di kelas eksperimen.Siswa di kelas kontrol dilakukan pembelajaran konvensional dan di kelas eksperimen dilakukan pembelajaran STEM dengan model PjBL.Data kreativitas diambil dengan instrument tes kreativitas dengan reliabilitas 0,84. Anlisis data dilakukan menggunakan ANCOVA dilanjutkan uji effect size. Hasil penelitian menujukkan bahwa ada perbedaan kreativitas dan pemahaman konsep siswa yang dilakukan pembelajarn STEM dengan model PjBL dan konvensional. Efektivitas pembelajaran STEM dengan model PjBL terhadap kreativitas dan pemhaman konsep IPA siswa sekolah dasar signifikan dengan kategori besar

Proceedings of the 3rd International Conference on Community Engagement and Education for Sustainable Development

This proceeding contains articles on the various ideas of the academic community presented at The 3rd International Conference on Community Engagement and Education for Sustainable Development (ICCEESD 2022) organized by the Universitas Gadjah Mada, Indonesia on 7th-8th December 2022.  ICCEESD is a biannual forum for sharing, benchmarking, and discussing HEI’s activities in developing Education for Sustainable Development towards community engagement. Education for Sustainability as a teaching strategy for resolving community challenges through formal, informal, or non-formal education is expected to benefit from various community service best practices by academics, researchers, and students. The 3rd ICCEESD has “Strengthening Education for Sustainability Towards Better Community Engagement” as its theme this year. It is expected that the 3rd ICCEESD will provide a forum for the presenters and participants to exchange best practices, policies, and conceptual implementation of Education for Sustainability towards better community engagement and explore ideas to address community needs.  Conference Title: 3rd International Conference on Community Engagement and Education for Sustainable DevelopmentConference Theme: Strengthening Education for Sustainability Towards Better Community EngagementConference Acronyms: ICCEESD 2022Conference Date: 7th-8th December 2022Conference Location: Grand Rohan Jogja Yogyakarta, IndonesiaConference Organizer: Universitas Gadjah Mada, Indonesi