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Jurnal Penelitian Pendidikan IPA (JPPIPA)
Published by Universitas Mataram
ISSN : 24602582     EISSN : 2407795X     DOI : -
Science Educational Research Journal is international open access, published by Science Master Program of Science Education Graduate Program University of Mataram, contains scientific articles both in the form of research results and literature review that includes science, technology and teaching in the field of science. The Science Educational Research Journal is published twice in a year in January and July editions. The editors receive writing in Indonesian or English, either from the university or from outside the university.
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Search results for , issue "Vol. 3 No. 1 (2017): January" : 5 Documents clear
IDENTIFIKASI SENYAWA METABOLIT SEKUNDER PADA HASIL FRAKSINASI EKSTRAK Phaseolus vulgaris L. DENGAN METODE GAS CHROMATOGRAPHY-MASS SPECTROSCOPY (GC-MS) Khurriyatul Khair; Yayuk Andayani; Aliefman Hakim
Jurnal Penelitian Pendidikan IPA Vol. 3 No. 1 (2017): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v3i1.51

Abstract

This research was aimed to identify some classes of secondary metabolite compound on the fractionation results of green bean extract (P. vulgaris L.) using Gas Chromatography-Mass Spectroscopy (GC-MS) method. Green bean was extracted by methanol solvent. Fractionation of methanol extract used Vacuum Liquid Chromatography (VLC) with some variation of eluents such as n-hexane 100%; n-hexane: ethyl acetate (9 : 1 to 1 : 9); and ethyl acetate 100%, produced 11 major fractions.  Based on Thin Layer Chromatography (TLC) analysis using DCM: MeOH (9.5: 0.5) as mobile phases, these 11 major fractions were classified based on their polarity such as non-polar, semi-polar and polar fraction. The results of identification by GC-MS spectrometer showed the presence of secondary metabolites such as monoterpenes in non-polar fraction; in semi-polar fraction was found terpenoids and steroids; in polar fraction was found monoterpenes, phenolic and steroid as the lowest percent area, that is less than 2%. Keyword: P.vulgaris L extract, fractionation, VLC, GC-MS
ANALISA VARIASI PEMBELAJARAN PADA MAHASISWA PROGRAM MAGISTER PENDIDIKAN IPA UNIVERSITAS MATARAM KOSIM -; Susilawati -; Aris Doyan; Ahmad Harjono
Jurnal Penelitian Pendidikan IPA Vol. 3 No. 1 (2017): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v3i1.74

Abstract

Descriptive study was conducted in order to determine the level of variation of instruction for student of Master of Science Education Program at University of Mataram. Important research carried out in connection with one of the competencies of teaching skills as a graduate Master of Science Education. Data collection method for the analysis of variations in instruction styles questionnaire used learning and teaching as well as a process for learning with multi representation approach on the subject of wave phenomena The population as well as a sample are students of Master of Science Education 2015/2016 and 2016/2017. The results of data processing of the variety of instruction based teaching style show 34.35% visual, 31.71% auditory and 33.94% kinestetic. While the level of variation of Instruction based on a total score of 45.50% in good category. Results variety of instruction with a multi representation provides a good level of 50.00%.Keywords: Variation of Instruction, Teaching style, Multi Representation Approach
PENGEMBANGAN PERANGKAT PEMBELAJARAN BIOLOGI BERBASIS INKUIRI TERBIMBING (PPBIT) DALAM MENINGKATKAN KEMAMPUAN BERARGUMEN SISWA Dewi Seprianingsih; A. Wahab Jufri; Jamaluddin -
Jurnal Penelitian Pendidikan IPA Vol. 3 No. 1 (2017): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v3i1.50

Abstract

Arguing ability was a part of critical thinking skills which important to be mastered by the students. In fact, students’ ability to argue was still relatively low. This referred to the TIMSS report (The Trends in International Mathematics and Science Study) in 2011, and showed that Indonesian children’s level in science was positioned in 42 from 45 countries. One kind of efforts to improve the quality of the ability to argue was applying the model of guided inquiry. This study was aimed to develop inquiry-based learning tools (PPBIT) and analyzed its effectiveness in developing the ability to argue of students at SMAN 2 Taliwang-West Sumbawa. PPBIT was carried out by applying 4D procedure. Then, pretest posttest control group design also completely concerned in determining the effectiveness of PPBIT. There were 66 students as the sample which was scattered from two classes and was selected by using purposive sampling technique. The results showed that PPBIT was appropriately to be used for students argumentation  skills’ activities by an average of feasibility syllabus 78.71%, RPP 83.5, LKITS 75%, and Instruments KB 80.25%, and effective in improving the ability to argue the class X SMAN 2 Taliwang, particularly on the subject of environmental pollution and recycling of waste by the average score of the students' ability from 48.22 up to 85.08Keyword: PPBIT, Argument
PENGARUH MODEL PENEMUAN TERBIMBING TERHADAP KETERAMPILAN PROSES SAINS DITINJAU DARI SIKAP ILMIAH PADA PEMBELAJARAN IPA Virgi Puspita Dewi; Aris Doyan; Harry Soeprianto
Jurnal Penelitian Pendidikan IPA Vol. 3 No. 1 (2017): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v3i1.102

Abstract

This study aims to determine: 1) the effect of learning model (guided discovery and conventional) against science process skills of students. (2) the effect of scientific attitudes (high and low) on learning science against science process skills of students. (3) the interaction effect between the learning model  and scientific attitude on learning science against science process skills of students. The type of this research is a quasi experiment with a 2x2 factorial design. The population of this research is the students of SMPN 10 Mataram. The sample consisted of two classes defined by cluster random sampling. The instrument used consisted of a scientific attitude test a questionnaires and observation sheets science process skills. The data were analyzed by ANOVA, the analysis were performed using SPSS version 20 for windows with SPSS previously tested homogeneity and normality at significant level of 0.05. Based on the analysis we conclude : (1) there is no effect of using guided discovery model and conventional model against science process skills and critical thinking ability of students. (2)  there is an effect of scientific attitude (high and low) on learning science against science process skills of students. (3) there is no effect of interaction between the learning model  with a scientific attitude on learning science against science process skills of students.Keywords: Model of guided discovery, science process skills, scientific attitude
SINTESIS LAPISAN TIPIS (THIN FILM) SnO2 DAN SnO2:Al MENGGUNAKAN TEKNIK SOL-GEL SPIN COATING PADA SUBSTRAT KACA DAN QUARTZ Yanika Diah Imawanti; Aris Doyan; Erin Ryantin Gunawan
Jurnal Penelitian Pendidikan IPA Vol. 3 No. 1 (2017): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v3i1.49

Abstract

This study has successfully synthesized SnO2 and SnO2 thin films by doping aluminum (Al) using the technique of sol-gel spin coating on glass and quartz substrates. The basic materials are Tin (II) chloride dihydrate (SnCl2.2H2O) and ethanol (C2H5OH) as solvent.  Material for doping is AlCl3 as much as 0.027 g, 0.053 g and 0.08 g to get Al dopant concentration of 5%, 10% and 15% respectively. The substrate used in this study are glass and quartz with the dimension of 10 mm x 10 mm x 3 mm. Detergent water, distilled water and 70% alcohol were used for the preparation of the substrates. Pure SnO2 sol solution was obtained by dissolving SnCl2.2H2O in ethanol, and SnO2:Al was obtained by adding AlCl3 to the solution of SnO2. The stirring process was done by using a hot plate magnetic stirrer to obtained a homogeneous solution (transparent). Sol solution of pure SnO2 and SnO2:Al were allowed for 24 hours as maturation (aging) process. Solution deposition on a substrate was done with a rotary speed of 2000 rpm for 3 minutes. Heating process was done at the annealing temperature of 200°C to 400°C by using a furnace for 1 hour to grow the crystalline of thin films. This thin films are very appropriate when applied to transparent conductive oxide (TCO) materials with high transparency and conductive character of tin (Sn) and aluminum (Al)Keyword: SnO2‚ aluminum‚ sol-gel, spin coating, substrate

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