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All Journal PROSIDING SEMINAR NASIONAL Prosiding Seminar Nasional MIPA Jurnal Pendidikan dan Pembelajaran Kimia (JPPK) Jurnal Ilmiah Administrasi Publik (JI@P) IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) ASEAN Journal of Chemical Engineering Jurnal Pengabdian kepada Masyarakat
Endang Tri Wahyuni
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Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Environmental Science Languange, Linguistic, Communication & Media Public Health Social Sciences Other

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Journal : PROSIDING SEMINAR NASIONAL

 1 
UPAYA PENINGKATAN PRESTASI BELAJAR SISWA MENGGUNAKAN MODEL PEMBELAJARAN NHT (Numbered Heads Together) Anisa Nur Khasanah; Endang Tri Wahyuni; Andari Puji Astuti
PROSIDING SEMINAR NASIONAL & INTERNASIONAL 2017: Prosiding Seminar Nasional Pendidikan, Sains dan Teknologi
Publisher : Universitas Muhammadiyah Semarang

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Abstract

Penelitian ini bertujuan untuk meningkatkan prestasi belajar siswa menggunakan model pembelajran NHT (Numbered Heads Together) pada materi struktur atom kelas X di SMA Negeri 02 Batang. Penelitian ini merupakan penelitian kuasi eksperimen. Kelompok eksperimen diberikan perlakuan dengan model pembelajaran NHT (Numbered Heads Together), sedangkan pada kelompok kontrol menggunakanmodel pembelajaran ceramah. Variabel penelitian ini terdiri dari variabel bebas yaitu model pembelajaran NHT (Numbered Heads Together) dan variabel terikatnya yaitu prestasi belajar siswa. Populasi dalam penelitian ini mencakup siswa kelas X MIA 1 dan X MIA 3 SMA Negeri 02 Batang  yang berjumlah 72 siswa. Teknik analisis data menggunakan statistik deskriptif dengan uji pengaruh dari kedua kelas. Hasil penelitian terbukti terdapat peningkatkan prestasi belajar siswamenggunakan model pembelajaran NHT (Numbered Heads Together) yang dibuktikan dengan harga r sebesar 0,978. Berdasarkan pernyataan tersebut maka dapat disimpulkan bahwa terdapat pengaruh model NHT (Numbered Heads Together) terhadap upaya peningkatan prestasi belajar kimia siswa pada materi struktur atom kelas X SMA Negeri 02 Batang. Kata kunci: NHT (Numbered Heads Together), prestasi belajar, pembelajaran kimia, struktur atom
EFFECTIVENESS OF SECANG WOOD (Caesalpinia sappan l) CONCENTRATION AS NATURAL INDICATOR FOR ACIDIMETRY METHOD Sri Riris Septianingsih; Ana Hidayati Mukaromah; Endang Tri Wahyuni
PROSIDING SEMINAR NASIONAL & INTERNASIONAL 2018: PROCEEDING 1ST INSELIDEA INTERNATIONAL SEMINAR ON EDUCATION AND DEVELOPMENT OF ASIA (INseIDEA)
Publisher : Universitas Muhammadiyah Semarang

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Abstract

cidimetry is a titration method used to determine acidic levels such as H2SO4,ISBN: 978-602-5614-24-8 Page 245 3 and HCl with methyl red                       (MR)1% w/v as indicator. As synthetic indicator, MR is relatively expensive, therefore a replacement indicator isneeded. This study aimed to investigate the potential of a natural indicator from secang wood (Caesalpiniasappan l) containing brazillin compounds to be used as replacement of MR. The efectiveness of woodconcentration 0.5; 1.0; 1.5 and  2 % w/v used as indicator of acidimetric titration, particularly for standardizingHCl solution was measured. Next, the minimal concentration of wood secang which can be used as indicator ofacidimetric titration was determined. The result showed that secang wood has potential to be used asreplacement indicator of MR. The percentage difference of concentration of HCl solution using MR indicator1.0% with wood concentration 0,5; 1.0; 1.5 and 2.0 % w/v were 6.7; 6.7; 10.0; and 21 % respectively. Minimumconcentration of wood secang that can be used as indicator in acidimetry is 0.5 %b/v.Keywords: acidimetry, secang wood, natural indicator, and synthetic indicator MR
Co-Authors Ana Hidayati Mukaromah Andari Puji Astuti Anggrasari, Herdiana ANISA NUR KHASANAH Bambang Rusdiarso Eny Winaryati I Wayan Warmada Muhammad Agung Stiarso Muhammad Taufik Hidayat Normah Ceristrisani Nurul Hidayat Aprilita Sang Kompiang Wirawan Sri Riris Septianingsih Sudati Nur Sarfiah Uju Suji’ah Wahono . Yuniar Yuniar