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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

Arjuna Subject : -

Articles 311 Documents

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Upaya Meningkatkan Aktivitas dan Hasil Belajar Kimia dengan Pendekatan Contextual Teaching Learning di Kelas X SMAN 7 Rejang Lebong Herlina Herlina
PendIPA Journal of Science Education Vol 4, No 1 (2020): NOVEMBER - FEBRUARY
Publisher : University of Bengkulu

The aims of this research were to determine the effectiveness learning methods with a contextual teaching learning (CTL) approach to increase the activity and student learning outcomes in redox reaction material in class X.1 of Rejang Lebong 7 Public High School. The research activity was carried out in two cycles, namely cycle I and cycle II. In the first cycle, the teacher had implemented a CTL approach which obtained student learning outcomes with average value of 68.39% and student learning completeness 67.74%. Out of 31 students who took the test, there were 21 students who completed learning. The activity of students in the first cycle has increased from pre-cycle, which is 56.69 or quite active category. Although activities and student learning outcomes from pre-cycle to cycle I began to increase, but have not reached the expected indicators. Therefore, the action continued to cycle II, where the student learning outcomes averaged 75.10 and classical learning completeness 87.10%. Likewise, the activity of students in the second cycle also increased, namely 71.53% or active category. From the results, it can be concluded that the use of learning methods with CTL approach can improve the activities and student learning outcomes in redox reaction material.

Extraction of Silica from Bengkulu Beach Sand using Alkali Fusion Method Soraya Nur Ishmah; M. Diki Permana; M. Lutfi Firdaus; Diana Rakhmawaty Eddy
PendIPA Journal of Science Education Vol 4, No 2 (2020): MARCH - JUNE
Publisher : University of Bengkulu

Silica is one of the potential minerals to be developed and applied in various industrial fields. High purity of silica can be obtained by utilizing natural materials such as beach sand. In this research the solid-liquid extraction (leaching) method was used in three main steps. Bengkulu beach sand as precursors reacted with NaOH (alkaline fusion) at 95°C to form Na2SiO3, then addition of HCl to form Si(OH)4, and drying the silica gel becomes SiO2. Based on the initial content analysis in Bengkulu sand contained 69.87% silica and other compounds with a lower percentage. The extracted silica was characterized using XRF and the purity of silica increase to 97.3%. The XRD characterization results showed that the silica formed was in the amorphous phase. Si-O-Si and Si-O bonds which are characteristics of SiO2 were identified in the FT-IR spectrum with absorption bands of 798.8 cm-1 and 475.1 cm-1 respectively.

Development of Learning Model for Squat-style Long-jump Basic Technique Based on Biomechanics with a Game Defliyanto Defliyanto; Moch Asmawi; Ramdan Pelana; Yarmani Yarmani
PendIPA Journal of Science Education Vol 4, No 1 (2020): NOVEMBER - FEBRUARY
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.4.1.31-39

The aims of this development research were to produce a learning model for basic technique of squat-style long-jump based on biomechanics with the game for junior high school students and to know the effectiveness, efficiency and attractiveness against learning model. This research used Deff model adopted from Research & Development by Borg and Gall. The subject used was junior high school students which consists of 45 students. The instruments used were need analysis, expert’s evaluation, small and large group test. Effectiveness test was to know junior high school students’ jump skill level before being given biomechanic treatment. The Pre-test obtained from the students’ jump result was about 540, and Post-test was about 812. The conducted t-test between the experiment group and the control group obtained was t = 10.152 and in the n-gain score test between the experiment group (biomechanic treatment) obtained by 76% (effective) and the control group obtained by 43.40% (less effective). Therefore, this game model is effective in increasing students’ jump learning. According to the result, it could be inferred that: (1) this model can be developed and applied in physical education, (2) the model proved that there are significant difference in pre-test and post-test between the experiment group (biomechanic treatment) and the control group after the treatment model, based on N-gain test.

Model Technique on Grabstart Swimming Branch using Video Media for Deaf-Children Anggri Dwi Nata; Achmad Sofyan Hanif; Abdul Sukur
PendIPA Journal of Science Education Vol 4, No 1 (2020): NOVEMBER - FEBRUARY
Publisher : University of Bengkulu

The goal of this study was to produce a grabstart swimming training model using video media in deaf children and to determine the effectiveness, efficiency and attractiveness of the training model. This study uses adopted model from Research & Development by Borg and Gall. Subjects of the study were 40 deaf children consisting of 20 experimental groups and 20 control groups. The instrument used was a swimming-start skill test. The research steps were needs-analysis, expert evaluation, small and large group-test. The effectiveness test determines the level of deaf swimming-start skills of children after being given a grabstart swimming training model. Based on the average pretest-posttest value of the experimental group that were 49.92 to 56.18, there was an increase of 6.26 while the average value of the pretest-posttest control group was 50.02 to 52.20 with an increase of 2.18. Thus, it could be seen that training using the grabstart swimming training model using video media is more effective than the control group. We concluded that (1) the grabstart training model of swimming sports using video media can be developed and applied to deaf children, (2) the grabstart training model of swimming sport using video media is effective in improving the deaf children's swimming-start skills.

Physical Activity Development Model Using Traditional Balinese Game in Junior High School Hendry Wijaya Kusuma; Moch. Asmawi; Hernawan Hernawan; Firmansyah Dlis; I Nyoman Kanca
PendIPA Journal of Science Education Vol 4, No 1 (2020): NOVEMBER - FEBRUARY
Publisher : University of Bengkulu

This study aims to develop learning of physical activity using traditional Ballinese in junior high schools, Buleleng Regency. Students can learn physical materials without feeling bored and tired. This study refer to research and development model by Borg and Gall. From the research and development, as well as the proposed procedures, the resulting product is a physical fitness learning model based on traditional Balinese games in junior high schools that consist of 30 traditional Balinese games. Product development begun with expert studies, field tests in small and large test groups and. Effectiveness tests. From the large-group test results, the model developed can be applied by students properly. In the effectiveness test, the mean of the control group was 364.08, while the mean of the experimental group was 350.00 that show the difference between the results of the experimental group and the control group. It can be concluded that there is a significant difference between the experimental group given the treatment and the control group. Product development can be ,improved significantly on the physical activity and attitude or affective student. Based on the results of the research, the product model of learning physical fitness activities based on traditional Balinese games can be recommended and can be effective as a learning model of physical fitness activities in junior high schools.

Penerapan Model Pembelajaran Inkuiri Dan Media Alat Peraga (Gunung Berapi) Pada Mata Pelajaran IPA SDN 013 Bengkulu Utara Mellyta Uliyandari; Elly Efrida Lubis
PendIPA Journal of Science Education Vol 4, No 2 (2020): MARCH - JUNE
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.4.2.74-78

This study aims to improve the quality of student learning outcomes in science subjects class IV / B SDN 013 Bengkulu Utara, using inquiry methods and teaching aids (volcanoes). The subjects in this study were students in class IV/B of SDN 013 Bengkulu Utara, with 24 students, 14 male students, and 10 female students. The study was conducted in 3 stages, namely: pre-cycle, cycle I and cycle II where each cycle consisted of 4 stages: Planning, Implementing, observing and reflecting. In this study each meeting ends with an evaluation in the form of test questions. The results of the analysis of mastery learning in pre-cycle are still quite low, namely, the results of students' mastery learning are only 33.33% with an average value of 64.79 After making improvements in learning in the first cycle classical learning completeness increased to 50% with an average value of 66.04. Then in the second cycle an increase of 95.85% with an average of 76.25. Based on the results of the study note that the use of inquiry methode and teaching aids (volcanoes) can improve student learning outcomes in science learning in SDN 013 Bengkulu Utara.

Metode Alternatif Menentukan KPK dan FPB Suatu Bilangan Bulat dengan Menggunakan Alat Peraga Nurul Astuty Yensy
PendIPA Journal of Science Education Vol 4, No 2 (2020): MARCH - JUNE
Publisher : University of Bengkulu

Mathematics has an important role in the world of education because it is very supportive of knowledge in other fields, such as physics, chemistry, biology and science. However, most people consider mathematics to be very difficult and boring because it is abstract, so mathematics learning should be carried out in a fun and interesting manner and easily understood by students. Determining the KPK and FPB of an integer is one of the mathematical material that is often considered difficult by students in primary school, especially if the number is large enough. Usually the teacher uses a factor tree or prime factorization. It was never applied using props, so this article discusses the alternative methods of determining the KPK and FPB of an integer using the props. The visual aids used were KPK and FPB boxes. Through this teaching aid, the learning becomes more fun and students become more enthusiastic about learning and understanding the concept of material becomes more increased.

Pengembangan Praktikum Kimia Organik 1 menggunakan Aplikasi Adobe Flash Dewi Handayani; Agus Sundaryono
PendIPA Journal of Science Education Vol 4, No 2 (2020): MARCH - JUNE
Publisher : University of Bengkulu

The purposes of this research are to develop the practicum of organic chemistry 1 by using the Adobe Flash application and to describe the students feasibility and response to the practicum developed. This type of research used in this research is research and development. The sample in this research is 3rd semester students of Chemistry Education Study Program in the academic year of 2018/ 2019. The instruments used in this research are validation sheets of material and media experts and response questionnaires students after testing. Based on the results of research that has been done, several stages of development ranging from problem identification, data collection, product design, design validation, design revision, and product trials have been carried out. The results of the validation of material experts obtained an average of 4,20 (very valid category) and an average media expert of 4.275 (very valid category). For the readability test of the developed guide, it was obtained 4.204 (very interesting category and student response was 3,936 (interesting category). Based on the results of expert validation and testing to students, the development of the organic chemistry 1 practicum guide was feasible to be applied in learning activities in class.

Dampak Pemberian Ekstrak “Simbagh Utak” (Hydnophytum formicarum) Terhadap Penurunan Kadar Asam Urat Darah pada Mencit (Mus musculus) Jantan Hiperurisemia Gustria Ernis; Dewi Handayani; Agus Sundaryono
PendIPA Journal of Science Education Vol 4, No 2 (2020): MARCH - JUNE
Publisher : University of Bengkulu

One of Bengkulu's local culture is the utilization of medicinal plants by the people of Bengkulu, especially South Bengkulu, namely "Simbagh Utak" (Hydnophytum formicarum) for treating various diseases including Gout. However, they still use naturally, there is no scientific studied. This study was aimed to analyze the effect of “Simbagh Utak” (H. formicarum) on the reduction of serum uric acid levels in hyperuricemia male mice. This study used 25 male mice, that devided into 5 groups. The control group was given pellet feed (G1). We injected the high purine feed treatment per-oral to induce hyperuricemia (Negative control, G2) and then given H. formicarum extract 5.3mg/30gW (G3), 10.2mg/30gW (G4) and 21,2mg/30gW (G5). Uric acid measurements were performed using a digital method with easy touch /GCU. The tubers were extracted with maceration, eluent selection and isolation of the isolated components was carried out using thin layer chromatography and column chromatography. The extraction results were analyzed of functional groups using FTIR. The result showed that “simbagh utak” extract 5.3mg/30gW, 10.2mg/30gW and 21,2mg/30gW could reduced uric acid levels of hyperuricemia male mice 34.1%, 48.0% dan 53.4% respectively. On this basis, we conclude that "Simbagh Utak" extract could reduced levels of uric acid M. musculus males who have experienced a state of hyperuricemia (excess uric acid) very significantly at a dose of 21.2mg /30gW.

Kondisi Kebisingan di Gedung Perkuliahan Universitas Bengkulu Abdul Rahman Singkam
PendIPA Journal of Science Education Vol 4, No 2 (2020): MARCH - JUNE
Publisher : University of Bengkulu

Learning activities require a conducive condition, including liberated of noise. This research aims to analyze the noisy level during learning activities in some lecture building of Universitas Bengkulu (UNIB). The data was collected through systematic purposive sampling and analyzed descriptively. The level of sound at UNIB lecture buildings (GKB) 1 until 5, I and J buildings was measured every five minutes during the interval 08.01 - 08.30, 08.31- 09.00, 10.01 - 10.30, 11.16 - 11.45 and 13.01 - 13.30 (local time) for a day sampling. The results show the sound intensity at UNIB lecture buildings ranges from 46.6 to 89.8 dBA, with most of the data (81%) were categorized as noisy, and above the threshold for education environment. The noise level was significantly different between buildings (X2=78.50, df=5, P<0.001) and between time interval (X2=79.09, df=29, P<0.001). The lowest average of noise was in J building i.e. 58.85 dBA + 1.30, while the highest was in GKB 5, 68.15 dBA + 0.87. Based on the time interval, the lowest average was at 13.01-13.30 i.e. 59.20 dBA + 1.45, while the highest at 10.01-10.30, 71.58 dbA + 1.86. This noise level was parallelly correlated with the estimation number of students using the building (F1,4=43.87, p < 0.001, R2=0.92), which indicated the main source for these noises are student activities. A high level of noise at UNIB lecture buildings need to be treated. A long term of noise can affect physiology and psychology of the students and reduce the effectivity of learning.

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Home Page

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Contact Name
M. Lutfi Firdaus

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M. Lutfi Firdaus

Phone
-

Journal Mail Official
pascapendipa@unib.ac.id

Editorial Address
-

Location
Kota bengkulu,

Bengkulu

INDONESIA