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DEVELOPMENT OF PROJECT-BASED LEARNING-BASED STUDENT WORKSHEETS ONSIMPLE DISTILLATION MAT ERI AT SMPN / MTSN TANAH PINOH Desy Ramadhani Putri; Rahmat Rasmawan; Maria Ulfah; Hairida Ulfah; Rini Muharini
Jurnal Scientia Vol. 12 No. 01 (2023): Education, Sosial science and Planning technique
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/scientia.v12i01.1085

Abstract

This study aims to determine the feasibility and response of teachers to project-based learning (PjbL) student work performance (LKPD) on mixed separation material. This research is research and development or R & D (research and development). The development model used is model ADDIE which is adapted into 3 stages, namely analysis (analyze), design (d esign), and development (development). The subject of this study is project-based learning (PjbL) based student work (LKPD). The test subjects in this study involved 6 science teachers, 3 MTSN 1 Tanah Pinoh science teachers, 2 science teachers from SMP IT Imam Syafi'i and 1 science teacher from SMPN 4 Tanah Pinoh. Data collection techniques are carried out through measurement techniques and indirect communication techniques, with assessment instruments, validation questionnaires and response test questionnaires. The feasibility of PJBL-based LKPD is assessed in material, media and language aspects carried out by three experts in each field. Material eligibility was obtained on average 94.7% with the "Very Worthy" criterion, media eligibility (graphicing) obtained an average of 96.4% with the criteria of" Very Worthy", and language eligibility obtained on average 97.9% with the criterion "Very Worthy". Furthermore, the results of the teacher's response to project-based learning (P jBL) LKPD were obtained 90.4% with the "Very Good" criterion. according to the results of the project-based learning (P jBL) Student Worksheet (LKPD) research on mixed separation material is feasible and can be used as teaching materials to support the science learning process, especially in mixed separation materials.
Phytochemical Screening of Ethanol Extracts from Three Variants of Kratom Leaves (Mitragyna speciosa Korth.) Masriani Masriani; Rini Muharini; Dinda Kartika Wijayanti; Purnama Melanie; Margareta Lita Widiansari
Hydrogen: Jurnal Kependidikan Kimia Vol 11, No 2 (2023): April 2023
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v11i2.7122

Abstract

Kratom (Mitragyna speciosa Korth.) has been traditionally used in the community for medicinal purposes. Kratom leaves have been reported to possess various biological activities such as antioxidant, antibacterial, anti-inflammatory, and antinociceptive effects. The biological activity of kratom leaves is believed to be attributed to the presence of secondary metabolites. The aim of this study was to investigate the content of secondary metabolite compounds in three types of kratom leaves, namely green, red, and white kratom. Each 200 g of kratom leaf powder was subjected to 72 hours of maceration with 1 L of 96% ethanol solvent. The resulting extract was filtered and concentrated using a water bath and an oven at a temperature of 50oC to obtain a concentrated extract. The extract was evaluated for its yield and secondary metabolite content using specific reagents for each test. The results revealed the presence of secondary metabolites such as alkaloids, flavonoids, triterpenoids, phenolics, tannins, and saponins in the red, green, and white kratom leaves. These findings provide a valuable reference for future bioactivity research and identification of the bioactive compounds present in the three variants of kratom leaves.
PENGEMBANGAN PETUNJUK PRAKTIKUM BERBASIS MEDIA 3D PAGEFLIP PROFESSIONAL MATERI ASAM DAN BASA Nurul Hikmah; Rini Muharini; Rody Putra Sartika; Hairida hairida; Ira Lestari
Jurnal Education and Development Vol 11 No 2 (2023): Vol.11 No.2.2023
Publisher : Institut Pendidikan Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (573.328 KB) | DOI: 10.37081/ed.v11i2.4583

Abstract

This study aims to determine the feasibility of Pageflip 3D media-based practicum instructions on acids and bases, based on the results of expert tests and teacher responses. The form of this research is research and development (R&D) which adopts the ADDIE development model. The subject of this study was a practical guide based on Pageflip 3D media on acid and base materials which were tested for responses to 6 teachers who assisted all class XI teachers at SMA Negeri 1 Sungai Kakap. The data collection instruments used were feasibility assessment sheets and teacher response questionnaires. The results of data processing show that the practical instructions based on 3D Pageflip media developed are very suitable for use in practicum in terms of the percentage of material on the eligibility aspect of the content of 87.40% and the presentation aspect of 89.32%, the percentage of linguistics is 91.10% and the percentage of eligibility media is 82.58 %. Based on the calculation results, the percentage of teacher response questionnaires is 84.85%. The teacher's response to practical instructions based on 3D Pageflip media is classified as very high.
PENGEMBANGAN E-LKPD BERBASIS PENDEKATAN SAINTIFIK PADA SUB MATERI TATA NAMA SENYAWA POLIATOMIK Novi Dwi Trisnawati; Rini Muharini; Rahmat Rasmawan; Eny Enawaty; Ira Lestari
Jurnal Education and Development Vol 11 No 2 (2023): Vol.11 No.2.2023
Publisher : Institut Pendidikan Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (380.308 KB) | DOI: 10.37081/ed.v11i2.4618

Abstract

This research to produce electronic student worksheets (E-LKPD) based on a scientific approach to the nomenclature sub-matter of polyatomic compounds that are feasible to use. This research is a development research using a 4-D model from Thiagaradjan. The data collection technique used is an indirect communication technique with a data collection tool, namely the feasibility evaluation sheet. The feasibility of the E-LKPD is seen from three aspects, namely material, language and graphics. Each aspect is assessed by each of the three experts. The results showed that the E-LKPD based on a scientific approach to the nomenclature sub-matter of polyatomic compounds was very suitable to be used as teaching material to support the learning of polyatomic compound nomenclature material with a score percentage on content and presentation aspects of 93.3% and 95.8%, language 93.3%, and 90.2% graphics.
PENGEMBANGAN LEMBAR KERJA PESERTA DIDIK (LKPD) BERBASIS KEARIFAN LOKAL PADA MATERI ZAT ADITIF Adriana Martania; Hairida Hairida; Rini Muharini; Eny Enawaty; Rahmat Rasmawan
Jurnal Education and Development Vol 11 No 2 (2023): Vol.11 No.2.2023
Publisher : Institut Pendidikan Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37081/ed.v11i2.4677

Abstract

The purpose of this study was to measure the validity and response of teachers to the developed Local Wisdom-Based Student Worksheets. The form of this research is development (R&D) with reference to the ADDIE development model which consists of analysis, design and development. The subject of this study was Student Worksheets Based on Local Wisdom which was piloted on three junior high school science teachers. The data collection instruments used were material validity questionnaires, language and graphics as well as teacher response questionnaires with data collection techniques in the form of indirect communication. Data analysis uses product validity criteria. The results of the data analysis showed that the Student Worksheets Based on Local Wisdom on Material Additives obtained valid criteria with an average material validity of 98.6%, language validity of 97.9% and material validity of 98.6% and based on the results of the teacher's response questionnaire to the Local Wisdom-Based Student Worksheet on Additive Materials received a good response with a percentage result of 90%. Therefore, the validity assessment and teacher response tests show that the Local Wisdom-Based Student Worksheet on Additive Material is valid for use by teachers and students in the learning process.
Peluang Mobilitas Internasional Dalam Usaha Peningkatan Kompetensi dan Wawasan Sivitas Akademika Pendidikan Kimia Universitas Tanjungpura Rini Muharini; Hairida Hairida; Eny Enawaty; Masriani Masriani; Rachmat Sahputra; Rody Putra Sartika; Tulus Djunanto; Ira Lestari; Andi I. Harun; Erlina Erlina; Maria Ulfah; Risya Sasri
Jurnal Pengabdian kepada Masyarakat Nusantara Vol. 4 No. 2 (2023): Jurnal Pengabdian kepada Masyarakat Nusantara (JPkMN)
Publisher : Cv. Utility Project Solution

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55338/jpkmn.v4i2.489

Abstract

Kementerian pendidikan, kebudayaan, riset dan teknologi telah mengeluarkan kebijakan agar seluruh perguruan tinggi di Indonesia melakukan transformasi pendidikan tinggi sesuai dengan delapan indikator kinerja utama perguruan tinggi yang salah satunya adalah internasionalisasi perguruan tinggi. Pencapaian tersebut diperoleh dari mobilitas dan kerja sama internasional yang dilakukan oleh sivitas akademika, yaitu dosen dan mahasiswa. Program studi pendidikan kimia FKIP universitas Tanjungpura berupaya berkonstribusi melalui mobilitas internasional dosen dan mahasiswa. Namun, kendala yang dihadapi adalah rendahnya kemampuan berbahasa asing dan minimnya informasi mengenai peluang mobilitas dan kerja sama internasional ini di kalangan mahasiswa. Hal ini menyebabkan rendahnya motivasi mahasiswa dalam berpartisipasi dalam kegiatan berskala internasional. Melihat hal itu, program pengabdian kepada masyarakat kepada para mahasiswa mengenai peluang mobilitas internasional dilaksanakan agar membuka wawasan dan meningkatkan motivasi mahasiswa. Kegiatan ini dilakukan dengan mengundang narasumber yang berkompeten dan membagikan angket kuisioner dan wawancara untuk mendapatkan respon dan pendapat mahasiswa mengenai kegiatan ini. Peluang dan strategi perolehan kerja sama dan hibah dari organisasi internasional, terutama eropa, disampaikan dengan gamblang oleh narasumber. Respon sangat positif diberikan oleh mahasiswa. Data angket kuisioner dan interview memperlihatkan bahwa mahasiswa termotivasi untuk meningkatkan kemampuan bahasa asingnya dan memiliki kemauan untuk terlibat dalam mobilitas internasional.
Development of Android-based E-Modules on Molecular Shape Materials of VSEPR Theory Wandi Wandi; Eny Enawaty; Rini Muharini; Rodi Putra Sartika
JURNAL EKSAKTA PENDIDIKAN (JEP) Vol 7 No 1 (2023): JEP (Jurnal Eksakta Pendidikan)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jep/vol7-iss1/719

Abstract

The use of teaching materials in online learning during the Covid-19 pandemic results in a lack of students' understanding of the molecular shape material of the VSEPR theory leading to learning objectives not being achieved. So the researchers make an Android-based e-module as a teaching material as a solution so that students better understand the material of molecular shapes in online learning. This study aims to determine the feasibility of an android-based e-module on the molecular shape material of the VSEPR theory. This research used a research and development (R&D) method which is based on the ADDIE model. The android-based e-module on the molecular shape material of the VSEPR theory was validated by an expert or validator which included the feasibility of the material, language, and graphics. The results show that the android-based e-module developed is categorized as very feasible to use. This Feasibility is reviewed from the results of the validation of the feasibility of the material which obtain a validity score of 92.69% showing that the e-emodule made has fulfilled the Feasibility aspects including the suitability of the material and basic competence, the accuracy of the material, the updating of the material, and encouraging curiosity. Language Feasibility validation with a validity score of 92.69% shows the module made has fulfilled the Feasibility aspects of being straightforward, communicative, conformity with the development of students, and conformity with the correct rules of the Indonesian language. Graphic feasibility validation with a feasibility percentage of 91.66% with very decent criteria shows that the e-module has met the qualifications from the aspect of measurement, cover design, and cover body design. The feasibility research results obtained will be applied as a reference in the manufacturee-mode android based, so the e-modules that are suitable for use can be used in further research
Inhibition of α-Glucosidase Enzyme by Ethanol Extract of Kratom Leaf Variant (Mitragyna speciosa Korth.) Dinda Kartika Wijayanti; Masriani Masriani; Dzul Fadly; Rini Muharini; Rahmat Rasmawan
Hydrogen: Jurnal Kependidikan Kimia Vol 11, No 3 (2023): June 2023
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v11i3.7776

Abstract

Diabetes melitus yang ditandai dengan hiperglikemia akut telah menjadi epidemi di seluruh dunia. Salah satu tumbuhan di Indonesia yang memiliki potensi empiris sebagai antidiabetes adalah kratom (Mitragyna speciosa Korth.). Ada 3 jenis varian kratom yang banyak digunakan oleh masyarakat yaitu varian kratom hijau, merah, dan putih. Varian ini dibedakan dengan adanya urat pada daun kratom. Namun penelitian antidiabetes dengan mekanisme penghambatan enzim α-glukosidase dari daun kratom varian merah, hijau, dan putih belum banyak diteliti. Penelitian ini bertujuan untuk mengetahui aktivitas penghambatan enzim α-glukosidase oleh Ekstrak Etanol Daun Kratom (Mitragyna speciosa Korth.)Berbagai varian. Serbuk tiga varian daun kratom dimaserasi dengan etanol 96% selama 72 jam, dan penghambatan aktivitas enzim α-glukosidase menggunakan ekstrak etanol dan akarbose sebagai kontrol positif. Pengujian in vitro dilakukan dengan menggunakan alat microplate reader dengan panjang gelombang 405 nm. Ekstrak etanol daun kratom varian merah, hijau, dan putih 96% pada konsentrasi 500 μg/ml dapat menghambat aktivitas enzim α-glukosidase masing-masing sebesar 10,57%, 13,06%, dan 5,33%. Hal ini menunjukkan bahwa ketiga varian kratom tersebut memiliki aktivitas sebagai penghambat enzim α-glukosidase namun tergolong sangat lemah, dengan IC50>200 μg/ml. Aktivitas penghambatan ketiga ekstrak berbeda nyata (p<0,05). Perbedaan ini mungkin disebabkan oleh kandungan metabolit sekunder pada masing-masing varian kratom.
PEMBUATAN PERANGKAT KOTAK INSTRUMEN TERPADU (KIT) PRAKTIKUM PADA MATERI INDIKATOR ASAM DAN BASA Fatin Khairunnisa; Rini Muharini; Husna Amalya Melati
EduChem Vol 2, No 1 (2021): FEBRUARI 2021
Publisher : Universitas Tanjungpura, Prodi Pendidikan Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/educhem.v2i1.37435

Abstract

The aim of this study is to discover the adequacy of Practicum toolkit box on acid and bases subject that was developed based on the adequacy assessment by expert and teachers and students’ responses. The subject of this study was acid and bases Practicum KIT that was tested to 10 students of SMPN 2 Selakau in an initial field test and also to 36 students from 3 middle schools (SMP) in amain field test, and, furthermore, five science teachers in the main field test from the same three schools. Evaluation sheet of the KIT adequacy and questionnaire were used for data-collection. The result of data processing showed the KIT that was developed is acceptable to be used in learning process through the standards of material, language, graphic, and KIT media with validity coefficient score 1. Moreover, on the report of percentages calculation of questionnaire, the result of student questionnaires in the initial field test and main field test had collected the average of percentages, which were 82.62% and 87.27% with a very high criteria, and for the teacher questionnaires, the number of the average of percentages was 91.77% with a very high criteria as well.
KELAYAKAN DAN RESPON SISWA SMK PGRI PONTIANAK TERHADAP PENGEMBANGAN MODUL TATA NAMA SENYAWA KIMIA ANORGANIK SEDERHANA Dedi Irawan; Rini Muharini; Ira Lestari
EduChem Vol 2, No 2 (2021): AGUSTUS 2021
Publisher : Universitas Tanjungpura, Prodi Pendidikan Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/educhem.v2i2.38793

Abstract

The development research of the Simple Inorganic Chemical Compound Nomenclature Module aimed to determine the level of feasability and response of students toward the module that was developed. The form of research used was Research and Development (R&D) adopted the Jerrold Kemp development model. The technique for selecting this research sample was random sampling to 30 students of SMK PGRI Pontianak. The instrument of data collection used, namely a sheet of feasability assessment and student questionnaire responses. The results of data analysis showed that the Simple  Inorganic Chemical Compound Nomenclature Module was very feasible (88,05%). Students respond toward the Simple Inorganic Chemical Compound Nomenclature Module was relatively good (72,54%). The results of the advisability assessment and student questionnaire response showed that the ‘‘Simple Inorganic Chemical Compound Nomenclature Module’’ was very feasible to use in the learning process.
Co-Authors A Ifriani Harun AA Sudharmawan, AA Abdul Hafiz, Iqbal Ade Kurnia Ade Mirza Adriana Martania Agung Hartoyo Agusta, Muhammad Farras Leonasa Agustinus Ridwan Ahmad Yani T Akrom, Akrom Andi Hairil Alimuddin Andi I. Harun Andi Ifriany Andriyani, Putri Anggi Fatmadiwi Angraini, Mega Restu Aninda, Dea Antonius Ola Apriliantika, Apriliantika Arit Arit Arniezca, Elginda Yusa Asriah Nurdini M. Asrori Asrori Assari, Andra Meisantry Aunurrahman Aunurrahman Ayni, Ayni Bella Agustina Bilqis, Adilla Cahyani, Gustin Cahyani, Melur Regista Candra Candra Claudina Marditha Dea Aninda Dedi Irawan Depasthika, Sistha Citra Desy Ramadhani Putri Dewi Pratiwi Dinda Kartika Wijayanti Dzul Fadly Eka Kartina Eka Sofia Elisa, Claudia Eva Eni Mayasari Eny Enawati Eny Enawati Eny Enawati Eny Enawaty Eny Enawaty Erlina ERLINA Erlina Erlina Ersando Ersando Ersando Ersando Fadly, Dzul Fania, Ririn Putri Faridy, Fadhil Alwa Fatin Khairunnisa Fatmadiwi, Anggi Fatmala, Fatmala Febriani, Melda Fia Tiaraseta Firman Shantya Budi Fitri, Rosiana Fitriani Fitriani Gerina, Febrilia Hafiz, Muhammad Iqbal Abdul Hairida Hairida Hamdil Mukhlishin Henny Herawaty Hidayati, Putri Risti Husna Amalya Melati Husna Amalya Melati Husna Amalya Melati Ifriani, Andi Ifriany, A. Ifriany, Andi Ifriany, Andy Iqbal Abdul Hafiz Ira Lestari Ira Lestari Ira Lestari Irene Yudea Listra Irmalia, Andari Meriam Isa Isa Isa Isa Istiqomah Istiqomah istiqomah istiqomah Istiqomah, Fatiyatul Laili Fitri Yeni Lestari*, Ira Lukman Hadi Lukman Hadi Lukman Hadi Lukman Hadi, Lukman Maharani Nukila Maharani Nukila Mahendra, M. Rezha Mardasela, Tery Margareta Lita Widiansari Maria Ulfa Maria Ulfah Maria Ulfah Marisa Marisa Maryani Maryani Maryani Maryani Masriani . Masriani Masriani Maulidiyah, Hanna Rohmatul MELANIA, PURNAMA Melur Regista Cahyani Meri Meri Miranti, Maya Monica, Icha Monica, Qois Monika, Putri Dharma Muhammad Arifin Muhammad Asrori Muhammad Asrori Muhammad Farras Leonasa Agusta Nelly Dayanti Noprianti, Dini Novi Dwi Trisnawati Nur Hijriyati Nurhalimah, Risna Nurpaisah, Nurpaisah Nurul Hikmah Pasaribu, Revi Lestari Patia, Patia Peter Proksch Pingkan Ramadhan Sailendra Pranata, Rio Pratami, Hutianas Muhar Pratiwi, Divya Indah Pundentiana Stella Padari Purnama Melanie Puspita, Vivi Anugrah Rachamat Sahputra Rachmat Sahputra Rachmat Sahputra Rachmat Sahputra Rahma, Saparina Rahmad Ulwan Rahmat Rasmawan Ramadhan Sailendra, Pingkan Ramadhanti, Nuzul Alya Risya Sasri Riyanto, Izory Roman Rody Putra Sartika Rossesa, Rossesa RR. Ella Evrita Hestiandari Rudiyansyah Rudiyansyah Rudiyansyah Rudiyansyah, Rusnani Rusnani Sabianto, Fransiskus Sahputra, Rahmat Saleha, Tsaniya Rahma Sasri, Risya Seilendra, Pingkan Ramadhan Selina, Selina Siahaan, Gorga Josua Chrisvandoli Silpia Vilda Saputri suci dessia Sulistyarini, Sulistyarini surono, wahid Syamswisna , theresia, monica Tiara, Tiara Tomo Djudin Tulus Djunanto Tulus Junanto Tulus Junanto Ubadilla Mairani Ulwan, Rahmad Ursula Lisfatkandayant Utami, Nurzam Indah Verya Adithya Vita Oktavianty Wahyuni, Neri Wandi Wandi Warohmah, Mawaddatul Warsidah Warsidah Warsidah Warsidah Warsidah, Warsidah Widiana Uluk Naikofi WOLLY CANDRAMILA Yeni Meilani Yeni Triana Yopita Ita Yuliarita, Yuliarita Yuni Wanda Lestari Zakaria, Andi