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All Journal CHEMISTRY PROGRESS Jurnal Pendidikan Kimia Undiksha Sainstek Jurnal Natur Indonesia Jurnal Pilar Sains Jurnal Inovasi Pendidikan Kimia Tadris: Jurnal keguruan dan Ilmu Tarbiyah Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Jurnal Teknologi Pertanian Biology, Medicine, & Natural Product Chemistry Proceeding 7th International Seminar on Regional Education Indonesian Journal of Chemical Science Jurnal Manajemen Pendidikan PEMBELAJAR: Jurnal Ilmu Pendidikan, Keguruan, dan Pembelajaran Journal of Natural Science and Integration Jurnal Teknologi & Industri Hasil Pertanian Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Batoboh : Jurnal Pengabdian Pada Masyarakat Chemistry Education Practice Eduproxima : Jurnal Ilmiah Pendidikan IPA Jurnal Bio-Geo Material Dan Energi Journal of Educational Sciences UNESA Journal of Chemical Education Jurnal Pengabdian Fakultas Pertanian Universitas Lampung Jurnal Agroindustri Berkelanjutan
Maria Erna Kustyawati
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Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Library & Information Science Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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Physical Characteristics of Immobilized Cells Acetobacter xylinum of Various Concentrations of Na-alginate Indraningtyas, Lathifa; Kustyawati, Maria Erna; Fitriah, Nafiatul
Biology, Medicine, & Natural Product Chemistry Vol 13, No 1 (2024)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2024.131.165-172

Abstract

Immobilization of Acetobacter xylinum cells by trapping technique is considered one way to maintain cell viability and can be used repeatedly. The purpose of this study was to determine the physical characteristics of immobilized cells in different concentrations of Na-alginate and apply them to the manufacture of nata de coco, as well as to see the surface and pore shape of immobilized cells after fermentation. This study used a descriptive method with visual observation. This study used one factor, namely various concentrations of Na-alginate, namely 2%, 3%, 4%, and 5% w/v. The immobilized cells applied to the manufacture of nata de coco had only a Na-alginate concentration of 3% resulting in a nata fiber layer close to that of a control. Immobilized cells with a Na-alginate concentration of 2% have a cracked, slightly pore surface with a size of 60.37 μm, while a Na-alginate concentration of 5%, have a smooth surface, many pores, with a size of 10.55 μm. Thus, the concentration affects the characteristics of immobilized cells. Application of immobilized cells with a Na-alginate concentration of 3% produces nata de coco with a fairly thick and stable fiber layer characteristic (close to control).
Uji Kelayakan E-Modul Asam Basa Berbasis SSI (Socio-Scientific Issues) Berbantuan Flip PDF Professional Firanti, Feyges Frilla; Erviyenni; Erna, Maria
Jurnal Pendidikan Kimia Undiksha Vol. 8 No. 1 (2024)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jjpk.v8i1.70540

Abstract

Modul elektronik asam basa berbasis SSI telah dikembangkan sebagai alternatif bahan ajar mandiri yang dibutuhkan pada pembelajaran kimia di abad 21. Penelitian ini bertujuan untuk menghasilkan e-modul berbasis SSI (Socio-Scientific Issues) berbantuan Flip PDF Professional pada materi asam basa kelas XI  SMA/MA sederajat yang layak digunakan serta untuk mengetahui respon pengguna terhadap E-modul. Jenis penelitian yang digunakan dalam pengembangan E-modul ini adalah penelitian Research and Development dengan model pengembangan 4-D. Instrumen yang digunakan pada penelitian ini berupa lembar validasi dan angket respon pengguna. Uji kelayakan E-modul dilakukan di dua SMA di Pekanbaru dengan melibatkan 3 orang validator, 2 orang guru kimia dan 20 peserta didik. Hasil penelitian menunjukkan bahwa E-modul asam basa berbasis SSI telah dinyatakan valid oleh validator ahli materi dan media berdasarkan kelayakan isi dan karakteristik SSI, penyajian, tata bahasa, tampilan dan pemanfaatan software. Dari hasil penelitian dapat disimpulkan bahwa modul yang dikembangkan memiliki kriteria sangat baik sehingga layak untuk digunakan dalam proses pembelajaran kimia di kelas XI dengan skor masing-masing 91,98% oleh guru dan 83,79% oleh peserta didik.
PENDAMPINGAN DIGITAL MARKETING CV RAMAN FARM SEJAHTERA LAMPUNG TENGAH MELALUI KONTEN EDUKASI BISNIS PETERNAKAN Winanti, Diki Danar Tri; Kustyawati, Maria Erna; Prayitno, Hadi; Yusup, Maulid Wahid; Maharani, Ketut Oka; Hasanah, Asqiatul
Jurnal Pengabdian Fakultas Pertanian Universitas Lampung Vol 3, No 2 (2024): Jurnal Pengabdian Fakultas Pertanian Universitas Lampung Vol 3 No 2, September 2
Publisher : Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpfp.v3i2.9602

Abstract

Membuat video dengan konten edukasi peternakan menjadi salah satu cara yang paling efektif untuk promosi produk. Tim Pengabdian Universitas Lampung melakukan pendampingan kepada CV Raman Farm Sejahtera Lampung Tengah dalam pengembangan digital marketing sebagai sarana edukasi dan promosi. Salah satu subyeknya adalah owner perusahaan yang dapat menjadi role model bagi pemuda seusianya dan generasi di bawahnya bahwa bisnis peternakan sangat prospektif dan menguntungkan. Pengembangan digital marketing dilakukan melalui kana Youtube, Instagram, Tik Tok, dan website. Dampak dari sosial media yang sudah dibuat kemudian diukur menggunakan survey kepada responden dengan karakteristik usia dan perkerjaan yang berbeda secara acak. Hasil survey menunjukkan bahwa sarana digital marketing yang sudah dibuat sangat memotivasi responden untuk mencoba bisnis peternakan.
Development of Constructivism-Base Student Work Sheets of Aldehydes and Ketone Materials for Organic Chemistry II Students Hasnah, Hasnah; Susilawati, Susilawati; Erna, Maria; Rini, Rini
Journal of Educational Sciences Vol 3. No. 1. January 2019
Publisher : FKIP-Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jes.3.1.p.63-71

Abstract

Teaching materials that were applied previously in the form of MFIs are not yet constructivism-based. During the time, the applied student worksheet (LKM) is monotonic so that students are less motivated in the learning process, as the solution, a constructivism-based LKM need to be developed. The research aims to develop constructivism- based Student Worksheets on aldehyde and ketone material. This type of research was Research and Development with a 4-D development model which includes Definition, Design, Development, and Disseminate. This research was only carried out until the development stage and was followed by limited trials. The research was conducted at the FKIP University of Riau. The object of the research was constructivism-based LKM. The data analysis technique used in the study was descriptive statistical analysis, which was calculating the percentage of validation values. The average score of the assessment of the five aspects of the LKM feasibility by the validator team, which was didactic, constructs of feasibility of presentation, construct of linguistic, technical feasibility, characteristics of constructivism successively have a score of 98%, 100%, 99%, 100% and 100%, respectively. The average score of overall validation of constructivism-based Aldehyde and Ketone LKM is 99.39% with a valid feasibility category, meaning that the developed LKM are feasible to use in the real teaching.
Development of Constructivism-Based Student Worksheets on Free Radical Reaction Material Rahmatya, Okma; Susilawati, Susilawati; Erna, Maria
Journal of Educational Sciences Vol 3. No. 2. May 2019
Publisher : FKIP-Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jes.3.2.p.162-173

Abstract

Organic Chemistry is one of the difficult subjects, especially in reaction and strechochemical mechanisms. One effort to reduce it is to utilize teaching materials. This study aims to develop organic chemistry teaching materials on free radical reaction material in the form of constructivism-based student worksheets (LKM). The research method used research and development research design with a 4D development model which consists of the stages of define, design, development, and disseminate. Development of LKM was assessed based on validity criteria and limited trials. The validity of LKM was achieved and assessed by three validators. Limited trials were conducted for the 6th semester students of the chemical education study program totaling 15 people and also three organic chemistry lecturers to see the appropriateness of developed LKM from the lecturers' perspective. The overall LKM results of its validity showed that the LKM has 95.05% valid. The results of limited trials based on the responses of students and lecturers each obtained a percentage of 84.02% and 87.22%, respectively. Based on the results of validation and limited testing of constructivism-based LKM on the material of free radical reaction developed it is included in the category of valid and can be used in the learning process.
The Development of Assessment Instruments with Problem Posing Methods to Measure Students Creative Thinking Ability in Acid Base Materials Dewi, Pitri Rahma; Erna, Maria; Rasmiwetti, Rasmiwetti
Journal of Educational Sciences Vol 4. No. 2. April 2020
Publisher : FKIP-Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jes.4.2.p.334-346

Abstract

Students creative thinking skills play an important role in achieving educational goals, especially in understanding chemical material. Education is currently focused on developing Higher Order Thinking Skills and creative thinking skills that are one of the highest level of thinking. The teacher as one of the creative drivers is an important factor to increase student creativity in school. This study aims to develop creative thinking assessment instruments with problem posing methods on acid-base material and conduct tests to determine the responses of educators and students. This research used the Research and Development method which refers to the Borg and Gall model. The sample in this study amounted to 60 class XI high school students in Rokan Hulu district. The results of the validation of the assessment instruments were in average of more than 0.78 (very good) and had a test reliability on the main field test of 0.88 which was classified as very high. The level of difficulty ranged from 0.29 - 0.56 with the category of difficult and moderate. The ability to differentiate the problem is good enough. And the results of student responses amounted to 50.4 on the questionability readiness questionnaire, 8.1 on the questionnaire for sufficient time. Whereas the result of the teacher's response was 57.3 on the question eligibility questionnaire.
Readiness of Chemistry Teachers of Riau Province Viewed from Attitude Aspect in Applying 4C (Critical Thinking, Creative Thinking, Communication and Collaboration) Saputri, Agustina Eka; Copriady, Jimmi; Erna, Maria
Journal of Educational Sciences Vol 4. No. 3. July 2020
Publisher : FKIP-Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jes.4.3.p.501-510

Abstract

This study aims to determine the readiness of chemistry teachers in applying 4C skills (critical thinking, creative thinking, communication and collaboration) in terms of attitude aspects. The 4C skills are needed to prepare students to compete in the era of globalization and teachers which are the main factors for students success in mastering 21st century learning. This research was a descriptive and inferential study involving as many as 115 high school chemistry teachers in Pekanbaru City and Pelalawan district. The instruments used a Likert scale questionnaire 5 consisting of demographics of respondents and 4 variables to measure the ability of the 4C. The results of the analysis showed that the readiness of chemistry teachers in Pekanbaru City and Pelalawan regencies in Riau Province was seen from the aspect of attitudes at a high level. Data were analyzed descriptively based on mean values ​​and standard deviations as well as independent t tests and one way anova to determine differences in the readiness of high school chemistry teachers based on gender, years of service and educational qualifications. Thus, there were significant differences in the readiness of chemistry teachers in high school levels based on educational qualifications.
Study of Communicative and Collaborative Characteristics of Students using Inquiry Based Inquiry Based on Basic Acid Materials Putri, Bella Listriani; Erna, Maria; Anwar, Lenny
Journal of Educational Sciences Vol 4. No. 4. October 2020
Publisher : FKIP-Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jes.4.4.p.766-773

Abstract

Education today focuses on creating characters who are able to face future challenges. The first challenge in this global era is the need for every student to have process skills in 21st century learning known as 4C: (1) Communication Skills, (2) Collaboration skills, (3) Critical Thinking and (4) Creative. One of the characteristics desired in 21st century education is a communicative and collaborative character. The purpose of this study was to determine the improvement of the communicative and collaborative character of students after using guided inquiry-based e-LKPD on acid-base material. The form of this research was quasi-experimental research. The research sample consisted of 2 classes, namely the experimental class (XI MIA 1) and the control class (XI MIA 2). Based on the research, the results showed that the use of guided inquiry-based e-LKPD on acid-base material can improve the communicative and collaborative character of students through observation results with an average value in the experimental class, respectively, namely 89.25% and 85% with the high category compared the control class is 44.75% and 36.75% with the low category.
The Effectiveness of Collaborative Learning Throughtechniques on Group Investigation and Think Pair Share Students' Critical Thinking Ability on Chemical Equilibrium Material Fauzi, Fajrina; Erna, Maria; Linda, Roza
Journal of Educational Sciences Vol 5. No. 1. January 2021
Publisher : FKIP-Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jes.5.1.p.198-208

Abstract

The purpose of this study was to determine the differences in the improvement of students' thinking skills using collaborative learning techniques Think-Pair-Share and Group Investigation. The research used was a quasi-experimental research design with non equivalent control posttest design. The data collection technique used critical thinking skills questions consisting of 5 essay test questions. Based on the research results of hypothesis testing using paired simple t-test , the results obtained were sig (2-tailed) <0.05, which means that collaborative learning of GI and TPS techniques is effective on critical thinking skills than the control class. Hypothesis testing is to see significant differences between collaborative learning. TPS and GI techniques used independent sample t-test and the results obtained were sig (2-tailed) <0.05, which means that there is a significant difference between collaborative learning of GI and TPS techniques on critical thinking skills. For the average percentage of critical thinking skills in the collaborative learning class, the Think-Pair-Share technique is 80.57% and Group Investigation is 76.73%, and in the control class it is 68.45%, which means the application of collaborative learning techniques Think-Pair- Share is more effectively used in improving students' critical thinking skills on chemical equilibrium material.
The Problem Based Learning Model in Improving Concept Understanding and Self-Confidence Identification on Chemical Bonds at SMA Negeri 13 Pekanbaru Hidayat, Helmy; Erna, Maria; Anwar, Lenny
Journal of Educational Sciences Vol 5. No. 3. July 2021
Publisher : FKIP-Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jes.5.3.p.409-416

Abstract

This study aims to see the improvement of conceptual understanding and identification of students self-confidence by applying the Problem Based Learning (PBL) learning model to chemical bonding material. This type of research is quantitative with a pre-experimental design using the one group pretest-posttest step. The sample of this research was 36 students of Class X MIA 1 at SMA Negeri 13 Pekanbaru. Data collection techniques were using questionnaires and questionnaires. Quantitative descriptive data analysis technique was by calculating the percentage value of students' concept understanding. The results of data analysis showed that there was an increase in understanding of the concept of chemical bonds from 37.28 (pretest) to 81.39 (posttest), which was an increase of 44.11. The results of the analysis using the paired sample t-test with a significance value of 0.000 < 0.05. The results of the identification of students self-confidence obtained 81.94 with a very good category. The application of the Problem Based Learning model can improve understanding of concepts and be able to raise the confidence of students.
Co-Authors ', Abdullah ', Erviyenni ', Lenni ', Nur Aini ', Rasmiwetti ', Rini ', Ristiana Abdullah Abdullah Admin Alif Aisyah Aisyah Andi Dahliaty Anty Ummiyati Aprillia Dyah Suhestry Ardi, Dinda Melissa AS, suharyono Asha Aunaya La Assqiya Assqiya, Asha Aunaya La Azwendra, Yosi Baehaqi Bagus Wahyu Kuncoro Bayu Wicaksana, Bayu Betty Holiwarni Cahyani, Atika Dwi Dedi Futra Dewi Agustina Iryani, Dewi Agustina DEWI SARTIKA DEWI SARTIKA Dewi, Pitri Rahma Dyah Koesoemawardani Dyah Koesoemawardani Dyah Putri Larassati Elva Yasmi Elva Yasmi Amran, Elva Yasmi Emriadi - Erdi Suroso Erviyenni Erviyenni Erviyenni, Erviyenni Ety Testiaty Fauzi, Fajrina Firanti, Feyges Frilla Fitriah, Nafiatul Fitriani, Wahyu Fitriatul Hasanah, Fitriatul Hadi Prayitno Hadi Prayitno, Hadi Hardiani, Vira Hasanah, Asqiatul Hasnah Hasnah Helmy Hidayat, Helmy Herdiana, Novita Hestivik, Chelsi Ida Ayu Putu Sri Widnyani Ika, Risqa Putri Indraningtyas, Lathifa Irnov, Masithah Isnawati Lujeng Lestari Jimmi Copriady Johni Azmi Kuncoro, Bagus Wahyu Kurniawan, M. Andre Bintang Lenny Anwar Lisa Lestari Maharani, Ketut Oka marcella, Selly Marlisa, Lani Melatiningsih, Atri Mohd Jain Noordin Murhadi Murhadi Mursidin . Novizal, Roni Nuzuriah, Nuzuriah Oskar M. Manik Otik Nawansih Putri, Bella Listriani R. Usman Rery Rahmah, Amelia Kurnia Rahmatya, Okma Ramadani, Ramadani Rasmiwetti Rasmiwetti, Rasmiwetti RIBUT SUGIHARTO Rini Astuti RINI RINI Roza Linda Samsu Udayana Nurdin Samsul Rizal Saputri, Agustina Eka Sri Haryati Sri Hayati, Sri Sri Hidayati Sri Hidayati Sri Setyani, Sri Sri Waluyo suharyono AS Suharyono Suharyono Suhestry, Aprillia Dyah Sukrisno, Sukrisno Susilawati, Susilawati Sussi Astuti Syahrina Irya, Syahrina Syamsiana, Annisa Syarifah Syarifah, Syarifah Syukri Arief Tanto Pratondo Utomo Teguh Endaryanto Thaliarinanta, Angela Saraz Ummiyati, Anty Wildan Nur, Aditya Winanti, Diki Danar Tri Wisnu Satyajaya Yeni Yulia Sari, Yeni Yulia Yum Eryanti Yunelda, Ressi Yusup, Maulid Wahid