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Journal of RESIDU
Published by RC Institut
ISSN : 2598814X     EISSN : 25988131     DOI : -
Core Subject : Education,
Journal of RESIDU is an open access published by RC-INSTITUT. The main objective of Journal of RESIDU is to provide a platform for the international scholars, academicians and researchers to share the contemporary thoughts in the fields of Education.
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Articles 238 Documents
Hubungan Antara Kinerja Guru Dan Motivasi Belajar Dengan Hasil Belajar Kimia Siswa Pada Materi Asam Basa di SMA N 5 Padang Widodo, Mugi
journal of residu Vol 3 No 14 (2019): JOURNAL of RESIDU (Research and Investigation Educati)
Publisher : RC-INSTITUT

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The research aims to find the correlation between teachear performance, learning motivation, and chemistry learning achievement on acid based topic in SMAN 5 Padang and their contribution for the learning achivement. The method of the research is correlation reserach with Ex-post factodisign with a quantititative approach. The population of the research are the whole students of grade XII MIA in SMAN 5 Padang for academical year 2018/2019, with the total amount of 178 students. The sampel taken by using clauter random sampling technique with a total of 64 students.Data colection using questionnaire and documentation. Based on the result of the research, it can be concluded that: (1) There is a positive and significant correlation between teacher performance with chemistry learning achievement on acid based topic in SMAN 5 Padang. It can be seen from the data analysis result showed r = 0,42 and t hitung = 3,64. (2) There is a positive and significant correlation between learning motivation with chemistry learning achievement on acid based topic in SMAN 5 Padang. It can be seen from the data analysis result showed r = 0,37 and t count = 3,18. (3) There is a positive and significant correlation between teachear performance and learning motivation with chemistry learning achievement on acid based topic in SMAN 5 Padang. It can be seen from the data analysis result showed r = 0,49 and F count = 9,63.(4) There is constribution between teachear performance withlearning achievement17,6%; constribution between learning motivation with learning achievement14%; and togethers constribution between teachear performance and learning motivation with learning achievement 24,3% Keywords: teachear performance, learning motivation, and chemistry learning achievement
DIAGNOSA HUBUNGAN PENGETAHUAN AWAL (PRIOR KNOWLEDGE) TERHADAP KESULITAN BELAJAR SISWA PADA MATERI LARUTAN PENYANGGA DI SMA N 1 SOLOK Andriani, Novi
journal of residu Vol 3 No 13 (2019): JOURNAL of RESIDU (Research and Investigation Educati) By :ojs.rc-institu
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Buffer solution is one of the lessons that are considered difficult by students. This is because in learning the buffer solution has a lot of prior knowledge, which must be understood by students in order to understand the buffer solution. This research means to analyze the relationship of prior knowledge with students' learning difficult in learning buffer solutions in SMA N 1Solok. This research is a descriptive study conducted on class XI students of SMA N 1 Solok. The research subjects were 47 students. Data analysis techniques are carried out quantitative means at determining the percentage of students' learning difficulties in learning buffer solutions and the percentage of learning difficulties in the prior knowledge. From the research found the percentage of students experiencing learning difficulties with a very high category, namely the subject matter of the capacity of the buffer solution 92.3% and the pH of the buffer solution 83%, then the percentage with a high category on the subject matter of the mechanism of the buffer solution is 74.5%, and the moderate category in the material the properties of the buffer solution is 65.3%.  Learning difficulties by students are caused students do not understand the prior knowledge which is a prerequisite for learning buffer solutions in the form of chemical equilibrium, equilibrium constants, Brownsted-Lowry acid base concepts and acid base stoichiometry.   Keyword:  Prior Knowledge, Learning Difficulties, Buffer Solution
Efektivitas Penggunaan Permainan Edukatif Ludo Kimia Sebagai Media Pembelajaran pada Materi Ikatan Kimia Terhadap Hasil Belajar Siswa Kelas X SMAN 1 Lubuk Alung Ramadhani, Ikhsan
journal of residu Vol 3 No 14 (2019): JOURNAL of RESIDU (Research and Investigation Educati)
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This study was backgrounded by the availability of chemistry ludo educative game as learning media on chemical bonding lesson that has not been tested its effectivity to the study result of students. This study aims to reveal the effectivity level of the use of chemistry Ludo Educative Game as Learning Media on chemical bonding lesson to the study result of 10th grade student of SMAN 1 Lubuk Alung. The type of this study is pseudo experiment with non-equivalent control group designas the study design. The populations in this study are the 10th grade student of SMAN 1 Lubuk Alung. The sampling of this study was taken by purposive sampling technique. The class of X MIPA 2 is an experiment class and the class of X MIPA 1 is a control class. The data analysis techniques conducted in this study are N-Gain test and average equality test (t-test). The result of the study showed that there is an understanding improvement in both classes. The experiment class showed better understanding improvement compare to the control class. this is proven by pretest marks of the students in the both class which have 83,61 and 77,88 as the pretest mark. This is also proven by the average value of N-gain test. The experiment class got 0,78 with high category and control class got 0,67 with medium category. It  is also supported by the significant value of t-test for both classes. 0,001< 0,05 (α) is the significant value of t-test which indicates that hypothesis is received. Keywords: Effectivity, Educational Ludo Chemical Games, Chemical Bonding, Learning Outcomes
Katalis Asam Padat Berbasis Karbon Kulit Ubi Kayu Tersulfonasi Untuk Produksi Biodiesel Dari Minyak Sawit Fadli, Muhammad Al
journal of residu Vol 3 No 14 (2019): JOURNAL of RESIDU (Research and Investigation Educati)
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Palm oil is one of the vegetable oils that can be used as diesel fuel (biodiesel) through a transesterification reaction with alcohol assisted in the form of a solid acid catalyst (activated carbon). Solid acid catalyst can be made from cassava skin carbon by being hydrolyzed to produce carbon at 250 oC. Next the carbon is sulfonated chemically with 98% H2SO4 solution. In this research, biodiesel was made through a transesterification reaction between bimoli and methanol oil with a ratio of 6: 1, and using a catalyst with sulfonation variation of 2 hours, 4 hours, 6 hours, and 8 hours. The reaction lasts 65 oC and takes 2 hours. The properties of solid acid catalysts were identified using FTIR and XRD. The results of FTIR spectra characterization show that at wave number 1100-1200 cm-1 there is a group O = S = O which is covalently bonded with the carbon structure in each sample of SCCP. The results of the maximum percentage of sulfonate fraction are located at 6 hours of sulfonation time using XRF. The results of biodiesel obtained were tested for physical properties such as density, flow rate and acid number. Keywords—Solid acid catalyst, cassava peel, sulfonated carbon, biodiesel.
PENGARUH DOPING CuO TERHADAP EFFESIENSI SEL SURYA POLIMER HIBRID BERSTRUKTUR TERBALIK Putri, Shintya
journal of residu Vol 3 No 14 (2019): JOURNAL of RESIDU (Research and Investigation Educati)
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One of the most usable polymers is PPV:PCBM, PPV polymer mixed with PCBM polymer with ratio 3:1 can generate higher efficiency rate compared to the others. When preparing the solar cell, the available hybrid polymer has ITO/PEDOT:PSS/PPV:PCBM/Carbon lithography structure, however the solar cell of this kind has some problems which is PEDOT:PSS tend to became hygroscopic when placed in the bottom layer will absorb more water until the performance of the solar cell decreases. This study will discuss hybrid polymer solar cell with reversed structure, where the PEDOT:PSS layer will be placed on the uppermost to avoid the lack of previously built solar cells, and CuO also used in this solar cells as doping to increase the efficiency rate of the solar cells. As a doping, the concentration of CuO will be varied from 0.5 mole and 0.75 mole. In the other side, the thick coating of CuO also varied from 1x, 2x and 3x. All prepared solar cells then characterized using X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) to determine the crystal size, the thick of the layer and the surface’s morphological structure, 4-point probe system to measure the efficiency rate. The result of the CuO doping proved to be able to increase the efficiency rate of the previously built solar cells with the highest efficiency rate result is 3.237% with the 1 mole concentration of CuO and 1x coating. The crystal size of CuO was 23.19 – 23.25 nm.
Pengembangan Lembar Kerja Peserta Didik (LKPD) Polimer Sintetis dan Karbohidrat Berbasis Problem Based Learning Untuk Kelas XII SMA/MA Farizka, Widya
journal of residu Vol 3 No 13 (2019): JOURNAL of RESIDU (Research and Investigation Educati) By :ojs.rc-institu
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Actually these material has been applying in students daily life. The students could be given a problem in learning process that related to reality. The correct model can be used is Problem Based Learning. The research purpose is to make student worksheets (LKDP) based on problem in polymer and carbohydrate material. This research use 4-D to find the validation, there are 4 steps; (1) define (2) design (3) develop and (4) disseminate but in this research only use until develop step. Instrumentations are questioner validity that filled by lecture and teacher, questioner practicalities is filled by students in SMA Pembangunan Laboratorium UNP. Data from this research will be analyzed using Cohen’s kappa formula. Based on the analysis of questionnaire known that LKPD produced has a very high validity category (κ=0,88) very high practicalities (κ=0,97) based on teacher judgement; and high practicalities (κ=0,94) based on student judgement. Keywords: Student Worksheets, Problem Based Learning, Polymer Syntetic, carbohidrat, Research and Development, 4-D Model
Validitas dan Praktikalitas E-Modul Struktur Atom Berbasis Pendekatan Saintifik Pada Kelas X SMA/MA Juilando, Fatria
journal of residu Vol 3 No 14 (2019): JOURNAL of RESIDU (Research and Investigation Educati)
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The learning proces with the curriculum 2013 refers to the scientific approach. The purpose of this research is to develop e-module based on a scientific approach to class X SMA/MA and determine the level of validity and practicality of  e-modules depeloped. The type of this research is research  and development (R&D) with a 4-D development model. E-module which is caried out is validity and practicality test. The validity test was carried out by 2 chemistry lectures at FMIPA UNP, 3 chemistry teachers at SMAN 8 Padang, while the practicality test is carried out by 3 chemistry teachers of SMAN 8 Padang and 30 students of class X IPA 5 SMAN 8 Padang in 2019/2020. The instrument used for this research was a validity questionnire and practicality questionnaire whose results will be analyzed using the cohen kappa formula. This research  produced an atomic structure, e-module based on scientific approach with a mean moment of kappa is 0,85 with a very high level of validity. The results of the teacher practicality test and the practicality test of the students obtained an average of kappa moments sequentially  were 0,85 and 0,84 with very high degree of  practicality.
ANALISIS HUBUNGAN KESULITAN BELAJAR DENGAN PENGETAHUAN AWAL (PRIOR KNOWLEDGE) SISWA MENGGUNAKAN TES DIAGNOSTIK TWO-TIER PADA MATERI LARUTAN PENYANGGA DI SMAN 2 SOLOK Handayani, Putri
journal of residu Vol 3 No 13 (2019): JOURNAL of RESIDU (Research and Investigation Educati) By :ojs.rc-institu
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Buffer solutions are learning that many have early knowledge related to new lessons to be learned. Students can understand learning buffer solutions if the prior knowledge related to this material is understood. This study aims to analyze the relationship of prior knowledge with learning difficulties students in learning buffer solutions at SMAN 2 Solok. This type of research is Descriptive research on class XI students of SMAN 2 Solok by giving a test Two-Tier diagnostics. The research subjects were 34 students. Data analysis techniques are carried outquantitative aims to determine the percentage of student learning difficulties in learning buffer solution and percentage of learning difficulties in prior knowledge. From the research it was found that the percentage of students experiencing learning difficulties with a very high category average was not in accordance with scientific understanding, namely in the subject matter of the properties of buffer solution, capacity buffer solution, buffer solution mechanism, and pH of the buffer solution. Preliminary knowledge which affects the Bronsted Lowry ionization reaction, acid-base strength, acid base stoichiometry, acid-base pH and equilibrium constant. Keywords: Buffer solutions, Prior knowlede, Diagnostics test, Two-Tier
PERSONAL HYGIENE KARYAWAN DI PONDOK BAKSO MAS TRIS PADANG Putra, Ilham Adiaf
journal of residu Vol 3 No 14 (2019): JOURNAL of RESIDU (Research and Investigation Educati)
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Personal Hygiene is an action to maintain one's hygiene and health for physical and psychological well-being. However, in reality the personal Hygiene of employees is not considered. One solution to overcome this problem is the application of personal hygiene in Pondok Bakso Mas Tris. The purpose of this study was to find out personal hygiene, general health, exercise and fresh air, cleanliness of employees and cleanliness of clothes. Data collection techniques by means of observation, interviews and documentation. Based on the overall questionnaire results obtained statements from consumers as follows: strongly agree as much as 62.96%, agree 34.81% and less agree 2.22%, disagree 0%. So that it can be concluded that public health (general health) pay more attention to employees in maintaining general health in serving consumers. Based on the overall questionnaire results obtained statements from consumers as follows: strongly agree as much as 69.16%, agree 17.22% and disagree 8.47%, disagree 5.13%. So that it can be concluded that personal hygiene (personal cleanlines) on mas tris meatball huts pay little attention to personal hygiene and underestimate personal hygiene that has an impact on service to consumers who come. Based on the results of the consumer kepuasana questionnaire on mas tris meatball hut, it was found that strongly agreed 63.11%, agreed 35.11% did not agree 1.78% did not agree 0.0%. looks clean and neat when working. So that consumers love visiting continue to take care of the mas tris meatball hut. So it can be concluded that the Personal Hygiene at Pondok Bakso Mas Tris on Public Health, Personal Hygiene and Work Wear is very much considered.  
Evaluasi Motivasi Sumber Daya Manusia Terhadap Kinerja Di PT. Nusantara Beta Farma Pasar Usang Kabupaten Padang Pariaman Tahun 2016 Elfia, Linda
journal of residu Vol 1 No 1 (2017): Journal of RESIDU, Desember 2017
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Fokus penelitian ini adalah hubungan antara motivasi kerja karyawan, kemampuan kerja karyawan terhadap kinerja karyawan di PT. Nusantara Beta Farma (NBF) Sumatera Barat. Motivasi kerja karyawan, kemampuan kerja karyawan dan kinerja karyawan menjadi kebutuhan bagi perusahaan karena memiliki dimensi ekonomi, karyawan dengan motivasi kerja dan kemampuan kerja baik yang akan mampu menjalankan perusahaan dengan efektif dan efisien sehingga mendorong terwujudnya kinerja perusahaan yang baik. Jenis penelitian ini adalah non eksperimental dengan menggunakan rancangan Cross Sectional dan deskriptif asosiatif.Unit yang dianalisa adalah semua karyawan yang berada dilokasi pabrik Pasar Usang yang berjumlah 69 kiaryawan.Data dikumpulkan melalui kuesioner dengan 4 poin skala likert yang telah diuji validitas dan reliabilitasnya.Data secara kuantitatif dianalisa dengan uji Product moment coefficient correlation. Hasil penelitian secara deskriptif menggambarkan bahwa motivasi kerja karyawan, kemampuan kerja karjawan dan kinerja karyawan berada dalam kategori cukup baik.Secara statistik menggambarkan bahwa tidak ada hubungan antara motivasi kerja karyawan dan kemampuan kerja karyawan terhadap kinerja karyawan, jadi kinerja karyawan dipengaruhi oleh faktor eksternal karyawan dan faktor internal perusahaan.    Kata kuncai :Motivasi kerja,kemampuan kerja dan kinerja karyawan.

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