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All Journal Educate: Jurnal Ilmu Pendidikan dan Pengajaran Jurnal Elemen Kimia
Neny Rahmawati
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Chemical Engineering, Chemistry & Bioengineering Chemistry Education

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Meningkatkan Hasil Belajar Siswa Dengan Menerapkan Model Case Method Pada Pembelajaran Tematik Di Kelas IV UPT SD Negeri 060870 Medan Timur Neny Rahmawati
Educate: Jurnal Ilmu Pendidikan dan Pengajaran Vol 1, No 3 (2022)
Publisher : Educate: Jurnal Ilmu Pendidikan dan Pengajaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56114/edu.v1i3.470

Abstract

The purpose of this study was to improve student learning outcomes by using the case method learning model in thematic lessons in class IV UPT SD Negeri 060870 Medan Timur. This research was conducted in class IV UPT SD Negeri 060870 Medan Timur which is located at Jalan Gunung Krakatau No.196, Pulo Brayan Darat I, Medan Timur District, Medan City, North Sumatra, 20236. The implementation of this research was in semester I, this research was Class Action (PTK). The research steps involved are planning, acting, observing, reflecting, and evaluating and consist of 2 cycles. The subjects in this study were fourth grade students of UPT SD Negeri 060870 Medan Timur for the Academic Year 2022/2023 with a total of 26 students consisting of 11 boys and 15 girls. The object of this study is the learning outcomes in thematic lessons using the case method learning model in class IV UPT SD Negeri 060870 Medan Timur. From the results of this classroom action research several conclusions were obtained, namely: The use of the case method learning model was able to improve the learning outcomes of class IV UPT SD Negeri 060870 Medan Timur in thematic lessons. The average student learning outcomes increased from 50% to 69% in cycle I to 77% in cycle II. Student activities and student learning outcomes in learning increase and complete.
PENGEMBANGAN MOLECULARLY IMPRINTED POLYMER (MIP) SEBAGAI ADSORBEN SELEKTIF ION LOGAM KADMIUM (Cd2+) Neny Rahmawati; Siti Marwati
Jurnal Elemen Kimia Vol 7, No 4 (2018): Jurnal Kimia Dasar
Publisher : Universitas Negeri Yogyakarta

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Abstract

AbstrakPenelitian ini bertujuan untuk mengetahui karakteristik gugus fungsi Cd-MIP hasil sintesis, waktupengadukan optimum, pH larutan simulasi optimum, kapasitas adsorpsi Cd-MIP terhadap ion logam kadmium(Cd2+), dan selektivitas adsorpsi Cd-MIP terhadap ion logam kadmium (Cd2+) dengan ion logam kompetitor (Zn2+).Pembuatan Cd-MIP dilakukan dengan teknik polimerisasi ruah yang melibatkan 2-vinylpyridine sebagai monomerfungsional, ion logam kadmium sebagai template, etilen glikol dimetakrilat (EGDMA) sebagai crosslinker, danbenzoil peroksida sebagai inisiator. Karakterisasi Cd-MIP menggunakan FTIR. Kondisi optimum adosrpsi Cd-MIPterhadap ion logam kadmium (Cd2+) ditentukan melalui uji adsorptivitas dengan variasi waktu pengadukan dan pHlarutan simulasi. Selektivitas Cd-MIP diketahui menggunakan uji selektivitas dengan ion logam seng (Zn2+) sebagaikompetitor. Penentuan konsentrasi ion logam kadmium (Cd2+) menggunakan AAS. Hasil karakterisasi denganFTIR menunjukkan adanya gugus fungsi C-H alkana, C=O ester, C=C alkena, C-O ester, ikatan hidrogen, -CH2-metilen. Kondisi optimum adsorpsi Cd-MIP terhadap ion logam kadmium (Cd2+) diperoleh selama 1 jam dan padapH 6. Kapasitas adsorpsi adsorpsi Cd-MIP terhadap ion logam kadmium (Cd2+) pada kondisi optimum adalah2,4365 mg/g. Cd-MIP selektif terhadap ion logam kadmium (Cd2+) dengan ion logam Zn2+ sebagai kompetitor.Kata kunci: Adsorpsi, MIP, adsorben selektif, kadmium, 2-vinylpyridine.
Co-Authors Siti Marwati