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PEMBUATAN SISTEM PENENTUAN KOEFISIEN GESEK STATIS BENDA PADA BIDANG MIRING SECARA DIGITAL BERBASIS MIKROKONTROLER Fitri, Maisa; Hufri, Hufri; Yohandri, Yohandri
Sainstek : Jurnal Sains dan Teknologi Vol 6, No 2 (2014)
Publisher : IAIN Batusangkar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (326.81 KB) | DOI: 10.31958/js.v6i2.113

Abstract

The purpose of this research was to design a system of determination of the static friction coefficient of the object on inclined plane digitally. The purpose of this research is to explain the performance specifications, accuracy and precision of the system. There were three main results of this research. Firstly, the system was designed with the surface of the slip object size 8,7 x15 cm and glide plane 9 x 100 cm. Secondly, the average of accuracy relative accelerometer sensor was 95,58%. Thirdly, average precision was 0,977.Keywords: Static friction coefficient, accelerometer, tilt sensor
PEMBUATAN SET EKSPERIMEN GERAK JATUH BEBAS BERBASIS MIKROKONTROLER DENGAN TAMPILAN PC Dasriyani, Yohanna; Hufri, Hufri; Yohandri, Yohandri
Sainstek : Jurnal Sains dan Teknologi Vol 6, No 1 (2014)
Publisher : IAIN Batusangkar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (355.064 KB) | DOI: 10.31958/js.v6i1.107

Abstract

Experiment of free fall motion is one of phenomena in physic. Parameters of free fall motion still measured by stopwatch and meter. The purpose of research is development of free fall motion experiment set based on microcontroller with personal computer display. This instrument have highest precision and accuration. Average of measured result is 9,821 ± 0,025 with average of precicion relative is 98,3% and average accuration is 0,992.Key words: free fall motion, microcontroller, pc 
PELATIHAN PENGEMBANGAN MEDIA INTERAKTIF BERBASISKAN KONTEKSTUAL PADA GURU-GURU SMP LUBUK SIKAPING Hufri, Hufri; Dwiridal, Letmi; Sari, Silvi Yulia
GERVASI: Jurnal Pengabdian kepada Masyarakat Vol 4, No 1 (2020): GERVASI: Jurnal Pengabdian Kepada Masyarakat
Publisher : LPPM IKIP PGRI Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31571/gervasi.v4i1.1699

Abstract

Kegiatan PKM ini bertujuan untuk meningkatkan kompetensi guru-guru SMP Lubuk Sikaping dalam mengembangkan media interaktif berbasis kontekstual. Metode yang digunakan terdiri dari beberapa tahap yaitu tahap observasi, persiapan, pelaksanaan, monitoring. Hasil analisis data dari pretest dan postest, disimpulkan bahwa kegiatan PKM ini telah dapat meningkatkan kemampuan guru-guru IPA SMP Lubuk Sikaping dalam mengembangkan media pembelajaran interaktif, sehingga dapat meningkatkan kualitas pembelajaran. Berdasarkan angket yang diberikan pada akhir kegiatan pelatihan, diperoleh hasil bahwa peserta menyatakan kegiatan ini sangat bermanfaat dan berkaitan dengan pembelajaran di sekolah
Validasi Modul Elektronika Dasar Mengintegrasikan Creative Thinking Pada Materi Rangkaian Dioda dan Aplikasinya Triani, Frima; Hufri, Hufri
Jurnal Penelitian Pembelajaran Fisika Vol 6, No 2 (2020)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (427.52 KB) | DOI: 10.24036/jppf.v6i2.110852

Abstract

The low level of creative thinking of students in Indonesia is something that must be of concern, especially for the world of education. To emphasize understanding and develop creative thinking, students need to be facilitated with tools that support learning. One of them is the module that integrates creative thinking in it. The research carried out includes the type of Research and Development, namely the development of basic electronics modules integrating creative thinking in the diode circuit material and its applications. The design model used is the ADDIE model. This study aims to determine the validity of basic electronics modules integrating creative thinking in the diode circuit material and its applications. This value is obtained from a validity test questionnaire by experts. Based on the data analysis that has been done, the average value of module validation is 83.97%. Based on this value, it can be stated that the overall module components are already in the very valid category.
Validasi Modul Elektronika Dasar Mengintegrasikan Creative Thinking Pada Materi Rangkaian Elektronika Yang Menggunakan Transistor dan Aplikasinya Syahrani, Filda; Hufri, Hufri
Jurnal Penelitian Pembelajaran Fisika Vol 6, No 2 (2020)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (353.28 KB) | DOI: 10.24036/jppf.v6i2.110861

Abstract

This research is based on the low creative thinking skills and the teaching materials used in the lessons have not facilitated the student to increase their creative thinking skill. The aims of this study was to determine the value of validity of basic electronics module integrates creative thinking in electronic circuit materials using transistor and application. The type of research used is research and development (R&D). The research procedure used in this study uses the ADDIE development model. The research steps include : analysis, design, development, implementation, evaluation. While the data analysis used is descriptive data analysis. Based on the data analyzed there are research results, namely the average value of validity of basic electronics module integrates creative thinking by experts with an average value of 86% and have very valid criteria. It can be concluded that basic electronics module integrates creative thinking in electronic circuit materials using transistor and application are very valid for use in basic electronics learning for physics student.
IMPROVEMENT OF TEACHER CAPABILITY IN SOLOK SELATAN DISTRICT IN DEVELOPING MULTIMEDIA THROUGH TRAINING VIDEO EDITING Hufri Hufri
Pelita Eksakta Vol 2 No 1 (2019): Pelita Eksakta Vol. 2 No. 1
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol2-iss1/63

Abstract

Education in South Solok District, still lagging behind in the South Sumatra region, the UN ranking in 2016 is ranked 16th out of 19 existing cities / districts. This happens because the teacher uses video processing software that is recorded, so that many phenomena that cannot be used optimally. This PKM aims to improve the ability of teachers to develop text and video editing. The method used is the stage of interaction and discussion, training, training, training, training and development. Monitoring stages and, end of data analysis and report preparation. The instrument was a test of multimedia and video editing and questionnaires for the implementation of PKM activities. The results of data analysis, obtained by the average from the pretest is 14.42, for the average posttest average is 17.21. Then a paired t test was carried out, obtained a significance value of 0,000 <0,05, thus giving the conclusion that this PKM activity had been able to improve the ability of the Solok district junior school teachers in developing learning videos. Based on the questionnaire given at the end of the training activity, results were obtained that participants were very happy and involved in learning at school
DEVELOPMENT TRAINING MULTIMEDIA TAVAGI BASED on SCIENCE TO SUPPORT 2013 CURRICULUM on TEACHERS IPA of RAYON 1 PASAMAN DISTRICT Hufri Hufri
Pelita Eksakta Vol 2 No 2 (2019): Pelita Eksakta Vol. 2 No. 2
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol2-iss2/79

Abstract

ABSTRACT . The PKM activity aims to improve the competence of science teachers at Rayon 1 Pasaman junior high school in developing scientific-based interactive multimedia to support the 2013 curriculum. The target to be achieved is to increase the competency of teachers in developing TAVAGI multimedia (Text, Audio, Video, Animation, Graph , and interactivity) are science based. To achieve the goals and targets set, the method used consists of the observation phase, the orientation and discussion phase, the preparation stage of implementation, the implementation phase, the monitoring and evaluation stage as well as the data analysis and report making stage. The instrument used was a test on TAVAGI multimedia and a questionnaire for the implementation of activities. The results of data analysis of pretest and posttest, obtained an increase in the average pretest value of 34.28, and the average posttest score was 44.77 indicating the average value, posttest was higher than the pretest value. From the paired t test, the significance results obtained 0.000 <0.05. So it can be concluded that the PKM activities have been able to increase the competence of the teachers of Pasaman Rayon 1 Natural Science in developing scientific-based interactive multimedia to support the 2013 curriculum. very useful and related to learning in school.
PENINGKATAN KOMPETENSI GURU-GURU SMP SOLOK SELATAN MELALUI PELATIHAN PENGEMBANGAN MEDIA PEMBELAJARAN BERBASIS KONTEKSTUAL DENGAN PENDEKATAN SAINTIFIK Hufri Hufri; Harman Amir
Pelita Eksakta Vol 1 No 1 (2018): Pelita Eksakta Vol. 1 No. 1
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol1-iss1/12

Abstract

In the education sector of South Solok District, it is still lagging behind other regions in West Sumatera, this can be seen from the results of the UN rankings in 2016 which is ranked 16th out of 19 cities / districts in West Sumatera. Based on observations and discussions conducted on some teachers and principals, information is obtained that this is because in learning students are more likely to wait what is delivered by teachers or learning is still concentrated on the teacher. Then in learning the teacher has not used various media of learning. The media used can not accommodate the fact of the student's daily condition. This service activity aims to improve the competence of teachers of South Solok SMP in developing contextual based learning media with scientific approach. Target to be achieved is the improvement of competence of teachers and media of learning. To achieve the objectives and targets set, the methods used consist of six stages: observation stage, orientation and discussion stage, preparation stage, implementation stage, monitoring and evaluation stage and final stage of data analysis and report generation. Based on data analysis of pretest and posttest results, obtained an increase of average value from pretest that is 43,07 become 47,42 at postest. Furthermore, to know the difference between the two values of pretest and postes paired t test, obtained the results of significance 0.000 < 0.05, so it can be concluded that there is a difference between pretest results with postes. Furthermore, based on the questionnaire given at the end of the training activities, the results obtained that the participants said this activity is very useful and related to the subjects taught in schools
PELATIHAN PENGEMBANGAN MULTIMEDIA BERBASISKAN KONTEKSTUAL UNTUK PEMBELAJARAN INQUIRY BAGI GURU-GURU SMPN 19 DAN SMPN 34 KABUPATEN SOLOK SELATAN Hufri Hufri
Pelita Eksakta Vol 1 No 02 (2018): Pelita Eksakta Vol. 1 No. 2
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol1-iss02/27

Abstract

In the education sector of South Solok distric, it is still lagging behind other regions, this can be seen from the results of the 2016 UN ranking which is ranked 16th out of 19 cities /distric in West Sumatra. Based on observations and discussions conducted on several teachers and principals, this is due to the learning that students are more likely to wait for what is conveyed by the teacher or the learning is still teacher-centered. Then in learning the teacher has not used a variety of learning media. The media used cannot accommodate the facts of students' daily conditions, although in reality there are many types and various facts around students that can be developed and utilized to support learning. This devotion activity aims to improve the competence of teachers of South Solok Regency Junior High School through contextual based multimedia development training for inquiry learning. To achieve these objectives, the method used consists of several steps, namely the steps of orientation, preparation, implementation, monitoring and evaluation as well as the steps of data analysis and report preparation. The instrument used was a test of understanding of the material and questionnaire on participant's response. Data analysis techniques used are paired t test and percentage analysis. The results of the analysis of pretest and posttest data and questionnaire responses of training participants, obtained the average pretest value was 41.36 for the average posttest score was 57.27. So the average value, posttest is higher than the pretest value. Based on the results of the t test obtained a significance value of 0.000 <0.05, thus it can be concluded that there is a difference between the results of the pretest and posttest. Where the posttest results are better than the results of the pretest, this shows that there is an increase in the ability of teachers to develop contextual-based multimedia for inquiry learning. Based on the questionnaire given at the end of the training activity, the results showed that the participants stated that this activity was very useful and related to the subjects taught at school
The Assistance In Developing Teaching Material For Sciences Teachers In Solok Selatan District Through Concept Review Based On Local Wisdom Hufri Hufri
Pelita Eksakta Vol 3 No 1 (2020): Pelita Eksakta Vol. 3 No. 1
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol3-iss1/89

Abstract

Solok Selatan district is located at an altitude of 350-430 meters above sea level. The landscape varies between lowlands, hills and highlands which are a series of Bukit Barisan mountains. Solok Selatan district is faced with complex environmental problems. The practice of illegal logging in forest areas and illegal gold mining along the Batang Hari and Batang Sangir streams on a large scale, so that the district of Solok Selatan is often hit by natural disasters. In addition this also caused damage to infrastructure and fatalities. This event was triggered by the low awareness and level of education of the community about the importance of environmental preservation. This is also shown from the level of Human Development Index (HDI) of Solok Selatan regency for 2017 which is 67.81 lower than the Province of West Sumatera which is 71.24. It can also be seen from the results of the 2016 National Examination ranking which is ranked 16th, with an average value of 49.18. The objectives of this activity and the targets set are to assist teachers in developing teaching materials through the concept review based on local wisdom. The method used consists of the observation phase, the orientation and discussion phase, the preparation phase for implementation, the implementation phase, the monitoring and evaluation stage as well as the data analysis and report stage. The instrument used was a science concept study test based on local wisdom and a questionnaire for the implementation of activities. The instrument used was a test on the concept review and local wisdom and the questionnaires for the implementation activities. The results of data analysis of the pretest and posttest, showed the average pretest score was 55.14, and the average posttest score was 67.18. From the paired t test, the significance result was 0.023 <0.05. So it can be concluded that the assistance activities in developing teaching material for sciences teachers have been able to improve the competence of science teachers in Junior High School in Solok Selatan district.