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All Journal Jurnal Pendidikan dan Pembelajaran Jurnal Bahan Alam Terbarukan International Journal of Elementary Education M A T H L I N E : Jurnal Matematika dan Pendidikan Matematika Jurnal Pengabdian Masyarakat Bumi Raflesia PUBLIKASI PENELITIAN TERAPAN DAN KEBIJAKAN Jurnal Penelitian Pendidikan Matematika
Heru, Heru
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Agriculture, Biological Sciences & Forestry Humanities Economics, Econometrics & Finance Education Environmental Science Health Professions Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Public Health Social Sciences Other

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Extraction and Characterization of Coffee Oil From Instant-Coffee Waste Hanif, Muhammad; Harahap, Fahmi Alif Utama; Heru, Heru; Darni, Yuli; Ginting, Simparmin Br.
Jurnal Bahan Alam Terbarukan Vol 8, No 1 (2019): June 2019 [Nationally Accredited - Sinta 2]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v8i1.18619

Abstract

The higher demands of fossil energy usage are currently imbalance to its reserves. This issue will give a potency of fossil fuel scarcity that contributes on rising of its cost and disturbing economic stabilization in the future. It is desirable to find another resource which is sustainable and renewable to reduce the dependency on this resource. This study aimed to utilize the oil from instant coffee waste as biodiesel feedstocks. The coffee oil was extracted from instant-coffee waste by Soxhlet extractor and characterized its physical and chemical properties. The solvent extraction through the solid bed of coffee ground performed by five cycles interval using n-hexane as a solvent. Separation processing oil from its hydrocarbon solvent was in a rotary vacuum evaporator and the oil extract collected for further purposes. There was about 17.6% (on a dry weight basis) of coffee oil gained on 20 cycles of extraction. Analysis regarding its physicochemical properties reported that the crude oil has 0.89 g/mL of density, 43.82 mm2/s of kinematic viscosity, 44.47 mg KOH/g of acid value, and 176.40 mg KOH/g of saponification value. The fatty acids composition of the oil provided by GC-MS analyzer showed that unsaturated fatty acids contained, observed as trans-fatty acids rather than cis-fatty acids.
ANALISIS MEMBENTUK TANGGUNG JAWAB SISWA MELALUI DISIPLIN BELAJAR DI SMA Heru, Heru; Utomo, Bambang Budi
Jurnal Pendidikan dan Pembelajaran Khatulistiwa Vol 9, No 2 (2020): Februari 2020
Publisher : Jurnal Pendidikan dan Pembelajaran Khatulistiwa

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

 AbstractThis thesis is entitled "Students 'Learning Discipline Analysis in Forming Students' Responsibilities in Class X PPKn Subjects in 02 Raya Raya High School, Sungai Raya, Kubu Raya Regency". The method used in this research is descriptive research method, the form of research used is qualitative research. The subjects of the study were the tenth grade students of SMA Negeri 02 Sungai Raya, Kubu Raya Regency. Data collection techniques used in research are direct communication techniques, observation. The results of the study are: 1) Based on the results of the study relating to the learning of PPKn class X in SMA Negeri 02 Sungai Raya, Kubu Raya Regency, it was carried out well where the learning took place in accordance with the learning plans made by the teacher. 2) Based on the results of research related to students' learning discipline in Class X PPKn subjects at SMA Negeri 02 Sungai Raya, Kubu Raya Regency when the learning process, as a whole has been disciplined but there are still some students who lack discipline that can be seen in the learning process take place students are still out of the classroom, so the learning process is interrupted by students who are not disciplined the learning process is less focused in following teaching and learning activities. 3) Based on the results of research into the implementation of the discipline of learning in shaping the character of the responsibility of students of Class X IN SMA Negeri 02 Sungai Raya, Kubu Raya Regency will have an impact on the character of students in the discipline and responsibility, this can be seen from the violations committed by students, the impact of affecting learning outcomes as well as the learning achievements of students themselves. Keywords: Learning Discipline, PPKn Responsibility, Students
Modul Peserta Didik Berbasis Pendekatan Matematika Realistik Kelas IV Sekolah Dasar Yuliani, Refi Elfira; Heru, Heru; Wahidati, Wahidati
Mathline : Jurnal Matematika dan Pendidikan Matematika Vol 6 No 1 (2021): Mathline
Publisher : Universitas Wiralodra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31943/mathline.v6i1.196

Abstract

This study aims to produce a teaching material in the form of student modules based on PMRI approaches for grade IV elementary schools. The research method used is development research using the 4-D model (define, design, develop, disseminate). Subjects in the study were grade four students of SD IT Salsabila Palembang. Based on the research results obtained a valid and practical module. Validity can be from the results of the assessment of material experts, media modules and languages. Practicality can be from the results of the assessment of students in the field test is limited to the mathematical modules students developed. Based on data from the questionnaire analysis of students at the stage of limited field test, a score of 313 obtained from a maximum total of 352 assessments, which presented to be 88.92% and it could be categorized that the module developed practically. The potential effect was seen from the results of the student's final ability test. From the results of data analysis that has done that the average final score of students is 80.88 which means that the learning outcomes of students classified as an outstanding category, it can be concluded that the student mathematics module based on the PMRI approach that has developed as a potential effect on student learning outcomes students.
PENGARUH PENGGUNAAN APLIKASI GEOGEBRA BERBASIS TPACK TERHADAP HASIL BELAJAR MATEMATIKA PADA MATERI BANGUN RUANG DI SMA NEGERI 19 PALEMBANG Yuliani, Refi Elfira; Heru, Heru; Sari, Efni Lestiyani
Publikasi Penelitian Terapan dan Kebijakan Vol 4 No 1 (2021): Publikasi Penelitian Terapan dan Kebijakan
Publisher : Badan Penelitian dan Pengembangan Daerah Provinsi Sumatera Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46774/pptk.v4i1.337

Abstract

Penelitian ini bertujuan untuk mengetahui apakah ada pengaruh penggunaan aplikasi GeoGebra berbasis TPACK terhadap hasil belajar matematika pada materi bangun ruang. Penelitian dilakukan di SMA Negeri 19 Palembang. Populasi dalam penelitian ini adalah seluruh siswa SMA Negeri 19 Palembang kelas XII IPA Tahun Ajaran 2019/2020 yang terdiri dari tujuh kelas, dan berjumlah sebanyak 251 siswa. Sampel dalam penelitian ini adalah kelas XII IPA 4 sebanyak 33 orang siswa, yang diambil menggunakan metode Purposif sampling. Metode penelitian yang digunakan dalam penelitian ini adalah pra-experimental design, dengan desain One Group Pretest-Postest Design (satu kelompok pretest-postes). Hasil pengolahan data diperoleh nilai t-hitung sebesar 4,91 dan t-tabel adalah 2,01. Jika dibandingkan nilai t-hitung dengan t-tabel maka nilai t-hitung > t-tabel, atau 4,91 > 2,01. Berdasarkan kriteria penerimaan atau penolakan Ho, maka Ho ditolak atau Ha diterima, artinya ada pengaruh penggunaan aplikasi GeoGebra terhadap hasil belajar pada materi bangun ruang secara signifikan. Ini menunjukkan bahwa penggunaan aplikasi GeoGebra berbasis TPACK memiliki pengaruh terhadap hasil belajar matematika pada materi bangun ruang.
E-Course Design of Middle/MTs Teacher Training Using Google Classroom Yuliani, Refi Elfira; Heru, Heru
International Journal of Elementary Education Vol 5, No 3 (2021): Agustus
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijee.v5i3.37667

Abstract

The ability to design online learning was a skill that teachers in integrating ICT in Learning must possess. The problems faced by teachers in implementing online learning were complex, starting from internet access to the use of applications/software that can be used in online learning. This study aimed to produce an e-course for teacher training for SMP/MTs using the open-source google classroom. This research used a development research method with media evaluation using formative Evaluation Tessmer. As developed in this study was a teacher training media using google classroom. The research subjects were junior high school and MTS teachers, with 28 people involved during the training process activities. The instrument used in this research was a questionnaire. The questionnaire was given to the experts, and the participants of the small group trial were questionnaires to assess the e-course google classroom. The questionnaire given to the field test participants was to see the potential effect of learning using e-courses on the teacher's TPACK ability. The data analysis method used was descriptive qualitative. Based on the research results that have been done, it can be concluded that the e-course teacher training using google classroom was categorized as valid and practical. Validity was obtained from the assessment of the material, media, and language experts and was one-to-one. Practicality was obtained from the results of the small group trial by analyzing the results of the questionnaire distributed to the small group trial participants so that the average percentage of teacher assessment through the questionnaire was 92.5%. E-course had a potential effect on teacher TPACK with an average rate of 82.46%, classified as good. Based on the results obtained, it can be concluded that the developed training e-course was valid, practical, and had a potential effect on the achievement of TPACK. That was, the e-course that has been designed was effective.
Pengembangan Modul Matematika Siswa Berbasis Pendekatan PMRI Pada Materi Bangun Datar Kelas IV Sekolah Dasar Heru, Heru; Yuliani, Refi Elfira; Giastuti, Ayun
JURNAL PENELITIAN PENDIDIKAN MATEMATIKA Vol 3, No 1 (2019): JURNAL PENELITIAN PENDIDIKAN MATEMATIKA
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jp2m.v3i1.3356

Abstract

Student-centred learning requires teachers to provide learning materials that can support learning activities. This is so students can actively learn about learning resources and group discussions to gain knowledge. The obstacle issued by the teacher in making teaching materials themselves is the time required to create teaching materials. The development of modules based on PMRI learning provides a new colour in learning activities and the provision of teachers and activities in learning that are oriented towards student-centred learning. The research used is development research (development research) that uses a device development model design, according to Thiagarajan, namely defining, designing, developing, and disseminating. Based on the validity test from the experts and filling in the student questionnaire when the trial was limited, the score obtained was a percentage of 90.14% so that it can be concluded that the student module was based on PMRI's "valid and practical" approach. Based on the learning outcomes that have been done, the final average of students is 74%, which means that the learning outcomes of students are in a good category, where there are 8 students (47,058%) excellent category, 7 students (41,176%) good category, 1 student (5,882) %) enough categories and 1 student (5.882%) failed category. Based on an analysis of student learning outcomes, it can be concluded that modules that have been developed have an effect on learning outcomes.
PELATIHAN PENGGUNAAN WEB PAMER UN UNTUK EVALUASI KETERCAPAIAN INDIKATOR PEMBELAJARAN SISWA DALAM MENGIKUTI UJIAN NASIONAL PADA GURU MADRASAH TSANAWIYAH NURUL HIDAYAH PALEMBANG Nawawi, Sulton; Sunardi, Sunardi; Heru, Heru; Yuliani, Refi Elfira
Jurnal Pengabdian Masyarakat Bumi Raflesia Vol 4, No 3 (2021): Jurnal Pengabdian Masyarakat Bumi Raflesia
Publisher : Universitas Muhammadiyah Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36085/jpmbr.v4i3.1639

Abstract

Ujian nasional adalah kegiatan pengukuran dan penilaian kompetensi lulusan secara nasional pada mata pelajaran tersebut. Hasil ujian nasional ini berfungsi dalam memperbaiki dan meningkatkan mutu pembelajaran. Umpan baliknya bermuara kepada peningkatan hasil belajar peserta didik. Namun guru masih mengalami kesulitan dalam menganalisis, mengevaluasi dan menentukan materi yang mana yang rendah atau materi yang mengalami penurunan pada hasil ujian nasional. Tujuan kegiatan ini adalah memberikan pemahaman kepada guru dalam menggunakan aplikasi pamer UN untuk evaluasi hasil ujian nasional. Metode yang dilakukan yaitu transfer ilmu dan praktik langsung. Sebagai tolak ukur keberhasilan dari pengabdian masyarakat ini, penulis memberikan quisioner. Hasil quisioner indikator pertama berkaitan dengan materi hasilnya 100 % menjawab merupakan hal baru.  Indikator kedua apakah materi yang diberikan dapat membantu guru untuk melaksanakan tugas hasilnya 63,63 % menjawab sangat membantu. Indikator ketiga apakah guru merasa memperoleh gambaran yang kongkrit tentang  hasil ujian nasional melalui aplikasi PAMER UN hasilnya 100 % menjawab mendapat gambaran yang kongkrit. Indikator keempat apakah sudah tersedia aplikasi untuk menilai atau mengevaluasi hasil ujian nasional hasilnya 72,72 % belum tersedia sama sekali Indikator kelima perihal pemanfaatan aplikasi PAMER UN untuk dasar evaluasi kemajuan peserta didik dan sekolah hasilnya 45,45 % hasilnya sangat bermanfaat dan 54,53 %  hasilnya bermanfaat. Indikator keenam berkaitan dengan pelaksanaan kegiatan pengabdian masyarakat ini hasilnya 90,90 % sangat efektif. Pada indikator ketujuh berkaitan dengan waktu pelatihan hasilnya 27,27% menjawab cukup, 27,27 % menjawab seimbang,  dan 45 % menjawab terlalu pendek bila dibanding dengan materi dan tugas.Kata Kunci: Evaluasi, hasil, ujian nasional,  PAMER UN 
Lembar Kerja Siswa (LKS) Matematika Berbasis Guided Discovery Learning Siswa Kelas IX SMP Muliarsih, Leni; AS, Rusdy; Heru, Heru
JURNAL PENELITIAN PENDIDIKAN MATEMATIKA Vol 5, No 2 (2021): Jurnal Penelitian Pendidikan Matematika
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jp2m.v5i2.4319

Abstract

This study aims to produce teaching materials in the form of LKS based on Guided Discovery Learning for class IX students of SMP. The research method used is development research, consisting of a preliminary research phase, a prototype phase, and an assessment phase. The subjects in this study were class IX students of SMP Muhammadiyah 1 Palembang, totalling 32 students. The prototype in the form of worksheets in this study was validated by media, material and language experts. Based on the validation results of the experts, it was stated that the LKS prototype was valid. The second prototype (LKS) was tested for practicality through the small group test and obtained 93.33%, which was categorized as practical. A field test was carried out to see the potential effect of the developed LKS and obtained an average student final score of 80.96. The result shows that the worksheets developed and tested are categorized as very good. Based on the study results, it can be concluded that the student worksheets based on guided discovery learning that have been developed are valid, practical and have a potential effect on student learning outcomes
Co-Authors AS, Rusdy Bambang Budi Utomo Giastuti, Ayun Ginting, Simparmin Br. Harahap, Fahmi Alif Utama Muhammad Hanif Muliarsih, Leni REFI ELFIRA YULIANI, REFI ELFIRA Sari, Efni Lestiyani Sulton Nawawi Sunardi Sunardi Wahidati, Wahidati Yuli Darni