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PENDIPA Journal of Science Education

pendipa
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Published by Universitas Bengkulu

ISSN : 20869363 EISSN : 26229307 DOI : -

Core Subject : Science, Education,

Chemistry Education Mathematics

PENDIPA Journal of Science Education is a peer-reviewed, open-access journal covered all aspect of science and science education. PENDIPA journal welcomes the submission of scientific articles related to mathematics, physics, chemistry, biology, and its educational implementation in a school, higher education and other educational institution. We encourage scientist, lecturer, teacher and student to submit their original paper to the journal. PENDIPA journal is published by Graduate School of Science Education - University of Bengkulu, three times a year on February, June and October

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Articles 9 Documents

Search results for , issue "Vol 1, No 1 (2017): october" : 9 Documents clear

Penentuan Nilai Emisivitas Warna Menggunakan Penerangan Pada Miniatur Ruang Berbentuk Kubus Dan Proses Pembelajaran Fisika Kelas X SMK Negeri 2 Bengkulu Tengah Cariti Dassa Urra; Afrizal Mayub; M Farid
PendIPA Journal of Science Education Vol 1, No 1 (2017): october
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.1.1.32-40

ABSTRACT This study aims to: know the value of emissivity of purple, green, blue, red, light green, light blue, orange, yellow, pink, and improvement of learning outcomes by using PBL model on the concept of heat transfer class X TKR SMKN 2 Bengkulu Tengah, and explain the difference of students' cognitive learning outcomes in high, medium and low group. This study deals with the measurement of color emissivity and its implementation in physics learning on the topic of heat transfer. The population in this study is all students of class X SMK Negeri 2 Bengkulu Tengah academic year 2016/2017. The sample is taken by purposive sampling technique, that is class X.TKR (Light Vehicle Technique) which is taught by Problem Based Learning (PBL) model. This research is a quasi experimental research with One Group pretest-posttest design. The results showed that the purple comet value was 0.91, the green emissivity (going green) was 0.84, the blue emissivity (true blue) was 0.77, the red color emissivity (talk of the town) 0.66, light green color emissivity (apple martini) of 0.61, blue sky emissivity of 0.54, orange torch emission of 0,50, emissivity of light brown (pastry puff) of 0.46, yellow color emission (absolute yellow) of 0.37, and pink emissivity (crystal pink) of 0.24; There is an increase in learning outcomes on the concept of high, medium and low group high caloric transfer with N-gain values of 0.76 (high), 0.64 (medium), and 0.46 (moderate); There was a difference of students' cognitive learning outcomes in the high, medium and low groups shown by Fcount> Ftable (4.40> 3.35) at the 5% significance level.

STUDI KOMPONEN KIMIA PELEPAH SAWIT VARIETAS TENERA DAN PENGEMBANGANNYA SEBAGAI MODUL PEMBELAJARAN KIMIA Arpinaini Arpinaini; Sumpono Sumpono; Ridwan Yahya
PendIPA Journal of Science Education Vol 1, No 1 (2017): october
Publisher : University of Bengkulu

This study aims to (1) determine the levels of the components of the Tenera variety of palm oil compounds including extractives, holocellulose, ? - cellulose, and lignin. (2) Analyze the utilization of the pulp of Tenera varieties as pulp raw materials based on their chemical components; (3) application of chemistry learning module to improving student learning outcomes. Determination of extractive substance content with TAPPI test methods Q: 204; lignin content T: 222; holocellulose Q: 9 levels and ?-cellulose content with TAPPI test methods T: 204. then lignin, holocellulose and ?-cellulose produced from the procedure were characterized by an IR spectrophotometer. The results of the study were module and implemented in ICHO students in SMAN 2 Kota Bengkulu. The data of the research results were analyzed by ANOVA test at 5% level. The results of the characterization of lignin, holocellulose and ?-cellulose with FTIR obtained a distinctive peak of the respective functional groups of the macromolecules. From the research also obtained the average value of chemical component content on the palm velvet varieties of tenera according to their part of base, middle, ends with mean for extractive substance 8.49%, 7,87%, 6,74%, lignin 20,7 %, 18.95%, 16.69%. holocellulose 81.57%, 80.33%, 79.24% and ?- cellulose 44.57%, 43.56%, 43.26%. Based on the results of the variance analysis, the difference in position (base, center, tip) on the palm oil of the tenera varieties on extractive, lignin, holocellulose and ?-cellulose substances has significant differences. Based on the chemical component classification of Indonesian wide wood leaf, sheep betera varieties of tenera in all three positions are used as pulp raw materials because they have moderate lignin content, high levels of Holocellulose and moderate levels of ?-cellulose. The result of module implementation in students there is a significant difference between pretest and posttest value. The use of modules in learning in science groups can improve student learning outcomes.

Pembelajaran Fisika Konsep Kalor Dengan Menggunakan Media Pirolisis Sampah Plastik Untuk Meningkatkan Ketrampilan Berpikir Kritis Siswa Di SMAN 3 Bengkulu Tengah Umi kalsum; Agus Sundaryono; M Farid
PendIPA Journal of Science Education Vol 1, No 1 (2017): october
Publisher : University of Bengkulu

The objectives of this research are (1) to know the value of density, viscosity, fog point, oil absorption caloric, odor, color and fire sensitivity, in pyrolysis of plastic garbage from condenser one and two adsorbed using zeolite and activated charcoal, (2) the content contained in pyrolysis plastic waste oil adsorbed using active zeolite and charcoal, (3) knowing differences in critical thinking skills among students who learn to use guided inquiry learning model with students who study conventionally on physics learning. Convert plastic waste into fuel oil using a pyrolysis process with two water condensers, then plastic waste pyrolysis oil adsorbed using activated zeolite and charcoal. The results showed that the density value of the adsorbed oil for one condenser was 772 Kg / m3 and the condenser was 770 Kg / m3, the viscosity value of the adsorbed oil from the condenser one and two had the same value of 0.49 m2 / s, the fog point value oil that has been adsorbed on the condenser yield one and two is the same value that is -18oC, the calorific value of oil absorption, color, odor, and fire sensitivity shows the more adsorbent and the longer the adsorption process, the oil absorbs the smaller, , the odor does not sting, and the fire sensitivity gets smaller. GC-MS test results obtained the most compounds contained in pyrolysis oil plastic waste that has been adsorbed that is 1,3,5-trimethylcyclohexene. The implementation of physics learning on the concept of heat shows that there are differences in critical thinking skills in control and experiment class. Based on different test on posttest result the first material got 0,022 and postest second material equal to 0,047, the value is smaller than level of significance 0,05 so Ha accepted.

PENJERAPAN ZAT WARNA SINTETIS MENGGUNAKAN KARBON AKTIF KELAPA SAWIT DAN PENGEMBANGANNYA SEBAGAI BAHAN AJAR Efa Susanti; M.Lutfi Firdaus; Sumpono Sumpono
PendIPA Journal of Science Education Vol 1, No 1 (2017): october
Publisher : University of Bengkulu

This study aims to: (1) explain the ability of the active carbon absorption of Palm Oil Palm as a dye adsorbent Reactive Red and Direct Green (2) determines the pH, contact time, and weight of the optimum adsorbent and the influence of temperature using activated carbon. Reactive Red and Direct Green dyestuffs. (3) to explain the influence of video media usage on the improvement of learning result and critical thinking ability of students in Chemistry class XI MIPA E at SMAN 2 Kota Bengkulu. The procedure in this study is the activation of activated carbon of palm oil and activated, activated carbon characterization using FTIR, Determination of maximum wavelength (?), Calibration curve creation, Adsorption of substance by activated carbon of palm oil: determining pH, contact time, adsorbent weight, , adsorption isotherms, Determination of temperature effect, Adsorption Isotherm Determination, Determination of adsorption kinetics, Applications on dyestuffs. The data were analyzed. The result of pH variation, variation of adsorbent weight, and contact time were made curve so that pH, adsorbent weight, concentration and optimum contact time were obtained using Excel program. Using ANAVA one way, followed by KR-20 test and one sample t test. The results showed that there were: reactive red optimum wavelength 496 nm, optimum pH 3, optimum time 40 min, absorbent weight 150 mg, maximum absorbency KAPKS 32,73 mg / gr and direct green optimum wavelength 613 nm, with optimum pH 5, optimum time 40 minutes, absorbent weight 150 mg, maximum absorbency KAPKS 32.825 mg / gr. there is an increase of chemistry learning outcomes during the enrichment hours or outside of class hours and critical thinking skills of grade XI IPA E SMAN2 Kota Bengkulu using audio-visual media with average pretest score of 75 and average post test score 82.27 with four criteria critical thinking skills are less critical by 26%, critical enough 43%, critical 23% and very critical at 8%.

Produksi Biofuel Dari Limbah Cpo Dengan Katalis Berbasis Titanium Oksida Dan Implementasinya Pada Pembelajaran Kimia Nurlia Latifah; Agus Sundaryono; Rina Elvia
PendIPA Journal of Science Education Vol 1, No 1 (2017): october
Publisher : University of Bengkulu

Conversion of CPO waste into biofuel is one of the efforts to find alternative energy to overcome Indonesia's energy crisis. The resulting methyl ester was further processed into biofuel by cracking process with Ni/TiO2 and Co/TiO2 catalysts at temperature > 350oC for 2.5 hours followed by distillation. Educational research was done by doing the learning process by using biofuel module. The optimum biofuel yield was obtained from cracking methyl ester with 5% Ni/TiO2 catalyst and 3% Co/TiO2 catalyst respectively of 66,67 and 61,90%. The physical and chemical properties of cracked biofuels with Ni/TiO2 and Co/ TiO2 catalysts have complied with ASTM standards for biofuel except acid numbers. There is an increase in student learning outcomes before and after using the module.

Penggunaan Data Mikrotremor Dan Vs30 Untuk Mengetahui Hubungan Ketebalan Sedimen Terhadap Produktivitas Kelapa Sawit Dan Implementasinya Dalam Pembelajaran Fisika Riska Marwanti; M.Lutfi Firdaus; M Farid
PendIPA Journal of Science Education Vol 1, No 1 (2017): october
Publisher : University of Bengkulu

The aims of this study were to determine the relationship of sediment thickness to palm oil productivity and to know the improvement of student learning outcomes after learning using LKPD based on service learning. This study was conducted using HVSR (Horizontal to Vertical Spectral Ratio) method. Data were collected as 10 primary data points, while secondary data on palm oil productivity was obtained from PT Bio Nusantara Teknologi. Data obtained from field measurements are numerical data of natural wave recording or seismic signal at each measurement point. The data is processed using Geopsy software so it can be known the price of the dominant frequency (fo), while the shear wave velocity (Vs30) is obtained through USGS data. The result of this research is there is intermediate relationship between sediment thickness to productivity of palm oil with product moment correlation value equal to 0,6392, so that thicker layer of sediment hence higher productivity. The results of this study further used as a source of information contained in the form of LKPD-based service learning to become a learning medium taught by Problem Based Learning (PBL) model on students of class XI SMK N 1 Padang Jaya to know the improvement of students' cognitive learning outcomes in physics learning. The result of research implementation influence of sediment thickness to productivity of palm oil in classroom study showed cognitive learning result of learners experience improvement of cognitive learning result with average value of N-gain of 0,52 (medium criterion).

STUDI KEANEKARAGAMAN MAKROBENTOS DI WILAYAH KONSERVASI KURA-KURA UNIVERSITAS BENGKULU SEBAGAI SUMBER BELAJAR IPA Winda Zulistia; Bhakti Karyadi; Agus Susanta
PendIPA Journal of Science Education Vol 1, No 1 (2017): october
Publisher : University of Bengkulu

This study aims to determine the diversity of macrobentos that exist in the turtle conservation pond University of Bengkulu which serve as a source of learning science class VII MTsN 2 Bengkulu City. This research was conducted in February 2017 until May 2017. The sampling of macrobentos using a quadrant transect measuring 1x1 meter made of 6 quadrants. Based on the results of research conducted obtained 1,086 individuals belonging to macrobentos belonging to 3 genus namely, Bellamnya, Faunus, and Pomaceae. The data obtained were calculated based on macrobentos community structure consisting of population density (KP), relative abundance (KR), presence frequency (FK), Diversity Index (H ') and dominance index (C). The macrobentos diversity index found in turtle conservation ponds is below 1.5, with the result it can be said that in both turtle conservation ponds it has low macrobentos diversity. Development of learning refers to the modified Dick & Carey model. The lessons developed include Syllabus, RPP, LKPD, and performance appraisal instruments that are viewed from the students' process skills. The result of the validation of learning development shows that the teaching materials developed are very feasible in the test try to learners. The results showed that the average of students' process skills from the aspect of the highest performance performance was in good criteria. This is indicated by the percentage that reaches 67%. While the criteria include very good reached 33%. While for the result of measurement of process skill of student which counted by classical which counted on each indicator included into good category and very good.

Respons mahasiswa terhadap buku panduan dan kegiatan pelatihan “teknik monitoring kura-kura cyclemys oldhamii” Annisa Puji Astuti; Aceng Ruyani; Wiryono Wiryono
PendIPA Journal of Science Education Vol 1, No 1 (2017): october
Publisher : University of Bengkulu

This study aimed to know the students’s response to the guidebooks and training activities entitled "Monitoring Technique of the Cyclemys oldhamii Tortoise " in the ex situ conservation area Taman Pintar University of Bengkulu. The results showed that students responded positively to the guidebooks and training activities. Forestry students was very interested in the field practices related to the technique and monitoring activities of the C.oldhamii tortoise, while MIPA students was interested in knowledge of the habitat, morphology, and its conservation. Forestry students showed the biggest response to conserve C.oldhamii and other tortoises, meanwhile MIPA students was more interested to do the next observations and research about C.oldhamii and other tortoises for thesis research. Forestry and MIPA students could explain the benefits and plans after the training activities "Technique Monitoring of the Cyclemys oldhamii Tortoise" well.

Studi Komunitas Nekton Di Kawasan Konservasi Kura-Kura Universitas Bengkulu Dan Pengembangan Pembelajaran Berbasis Lingkungan Desi Enersy; Bhakti Karyadi; Endang Widi Winarni
PendIPA Journal of Science Education Vol 1, No 1 (2017): october
Publisher : University of Bengkulu

This study aims to inventory the type of necton, knowing the structure of the necton community and measuring the critical thinking skills of students of class VII.1 SMPN 1 Ujan Mas Kepahiang. The results showed that the necton obtained from the Taman Pintar pond amounted to 7 species and Pipi Putih Pond totaling 4 species. The necton species in the Taman Pintar pond with the highest KP, KS, and FK values are tin head fish with KP, KR, and FK values respectively 0.102 idv / m2, 75.71% and 83%. While on the Pipi Putih Pond is local catfish species with the value of KP, KR, FK of 0.01 idv / m2, 39.29% and 25%. Then dominance index (H ') in the Taman Pintar pond is 0.61 and C' Pipi Putih pond = 0.76. While the index of diversity of necton species in both ponds also belonged to very low category with H’ value of Taman Pintar Pond = 0.28 and H' of Pipi Putih pond = 0.17. The result of Percentage Of Agreement test showed that environment-based learning tools developed are included in the category highly feasible to be tested. Students’ critical thinking ability on the perpormance aspect shows 33 ,3 % percentage including critically critical criteria and 66,7 % including critical criteria. While Students’ critical thinking ability on the cognitive aspect shows four criteria, that are very critical as 26 %, crittical criteria 40 %, criteria critical enough 27 % and criteria less 7 %

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M. Lutfi Firdaus

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Journal Mail Official
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Location
Kota bengkulu,

Bengkulu

INDONESIA