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All Journal Jurnal Kependidikan: Penelitian Inovasi Pembelajaran Jurnal Penelitian Saintek
Senam Senam
FMIPA UNY
Decision Sciences, Operations Research & Management Education

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THE EFFECTS OF CREATIVE PROBLEM SOLVING-BASED LEARNING TOWARDS STUDENTS’ CREATIVITIES Triyono Triyono; Senam Senam; Jumadi Jumadi; Insih Wilujeng
Jurnal Kependidikan Vol. 1, No. 2 (2017)
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (35.486 KB) | DOI: 10.21831/jk.v1i2.9429

Abstract

PENGARUH PEMBELAJARAN IPA BERBASIS CREATIVE PROBLEM SOLVING TERHADAP KREATIVITAS SISWA SMPAbstrakPenelitian ini bertujuan untuk menganalisis pengaruh pembelajaran berbasis creative problem solving (CPS) terhadap kemampuan kreatif siswa kelas VII SMP di Gunungkidul. Penelitian ini merupakan penelitian kuasi eksperimen dengan populasi siswa kelas VII SMP di Kabupaten Gunungkidul yang masih menerapkan Kurikulum 2013 pada Semester 2 Tahun Ajaran 2015/2016. Sampel sebanyak tiga sekolah yang ditentukan berdasarkan stratified cluster random sampling, yakni SMP Negeri 1 Wonosari untuk sekolah kategori tinggi, SMP Negeri 1 Semin untuk sekolah kategori sedang, dan SMP Negeri 1 Paliyan untuk sekolah kategori rendah. Penentuan kelas eksperimen dan kontrol pada masing-masing sekolah dilakukan dengan teknik cluster random sampling. Kelas eksperimen diberikan perlakuan pembelajaran dengan model berbasis CPS dan kelas kontrol diberikan perlakuan pembelajaran dengan model discovery learning. Variabel Instrumen yang digunakan untuk mengukur kemampuan kreativitas adalah tes uraian terbuka. Data dianalisis menggunakan uji-t sample independent. Hasil penelitian menunjukkan adanya pengaruh yang positif pembelajaran IPA berbasis CPS terhadap kemampuan kreativitas siswa.Kata kunci: creative problem solving, discovery learning,kreativitasAbstractThis study was aimed at analyzing the effects of creative problem solving-based learning on the creative abilitIES of seventh-grade students in Gunungkidul. The study used a quasi experimental method with the population of seventh-grade students of the junior high school in Gunungkidul Regency that applied Curriculum 2013 in Semester 2 of the Academic Year 2015/2016. The samples were determined by stratified cluster random sampling including SMP Negeri 1 Wonosari for the high school category, SMP Negeri 1 Semin for the medium school category, and SMP Negeri 1 Paliyan for the low school category. The determination of the experiment and control class in each school was done by cluster random sampling technique. The experimental classeswere given treatment using creative problem solving-based learning while the control classes were given treatment using the discovery learning model. The instrument was an open-ended test used to measure the creativity level of the students. The data were analyzed qualitatively. The results show that there was a positive effect of creative problem solving-based learning on students’ creative abilities.Keywords: creative problem solving, discovery learning,students’ creativity
BIODEGRADATION OF POLYURETAN RESULTS OF SYNTHESIS OF SOYBEAN OIL, GLYCOLOLY POLYOKYLETHLES, AND METHYLES-4,4'-DIFENILDIISOSIANAT Eli Rohaeti; Senam Senam
Jurnal Penelitian Saintek Vol 15, No 2: Oktober 2010
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (11626.87 KB) | DOI: 10.21831/jps.v15i2.1752

Abstract

The objective of research were to synthesize polyurethane from  soybean oil, P EG400 and MDI,  to  determine  the  cross  linking,  and  to  learn  the  influence  of  incubation  times toward  degradability  of polyurethane.   Polyurethane   was  synthesized from  soybean  oil and oxydated soybean oil at room temperature followed  by curing for 10 hours at 70 DC,and  than  at  100 "c for 3 hours.  The synthesis  was  conducted  with  mass  compositionSBOI  OSBO  : P EG400  : MDI = 1 : 2  : 3.   Biodegradation   was  conducted  by usingmicroorganism   in  an  actived  sludge   of  malka  medium   at  37°C.    The  variation   of incubation  times were 5, 10, 15, 20, 25, and 30 days, respectively  with changes of media every 5 days.  Characterizations   of polyurethane   were functional   groups,  cross  linking, mass loss and biodegradability.  The oxydated soybean  oil has increased intensity of -OR functional   group,  hydroxyl  number,  density,  melting  and  boiling point,  otherwise  the refraction    index   has   decreased.    The   synthesized   polyurethane    has   characteristic absorption  of urethane functional  group and cross link. The increasing of incubation time can  decrease  biodegradability   of polyurethane.   The mass  loss    of polyurethane  from SBO-PEG400-MDI   has  the higher.  Biodegradation   can disappear  urethane  group  and decrease crystallinity  of polyurethane. Key words: biodegradation,  mass loss, crystallinity, polyurethane
Co-Authors Eli Rohaeti Insih Wilujeng Jumadi Jumadi Triyono Triyono