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All Journal Indonesian Journal of Chemistry Indonesian Journal of Pure and Applied Chemistry AR-RAZI Jurnal Ilmiah INFOKUM Hydrogen: Jurnal Kependidikan Kimia JIPI (Jurnal IPA dan Pembelajaran IPA)
Masriani Masriani
Tanjungpura University
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Environmental Science Physics

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Pengembangan Media Pembelajaran Pop-Up Book pada Materi Struktur Atom Fazrul Aprilyani; Masriani Masriani; Lukman Hadi
Jurnal Ilmiah Ar-Razi Vol 9, No 1 (2021): JURNAL ILMIAH AR-RAZI
Publisher : Universitas Muhammadiyah Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29406/ar-r.v9i1.2513

Abstract

This study aims to determine the feasibility of Pop-Up Book Media on Atomic Structure Material which was developed based on the results of expert tests (expert judgment). The form of this research is research and development (R&D) which adopts the Suyanto and Sartinem development model. The subject of this research is Pop-Up Book Media on Atomic Structure Material. The data collection technique uses indirect communication techniques. The assessment instrument used is in the form of a feasibility questionnaire. Media Pop-Up Book on Atomic Structure Material was validated by each of 3 experts in every aspect, namely, aspects of the feasibility of content, presentation, language and graphics. The results of data analysis show that the Pop-Up Book Media on the Atomic Structure Material developed is very suitable for use in learning in terms of content feasibility with a percentage of 85%, 88% presentation, 85.71% language, and 87.45% graphics with very high criteria.
ANTIMICROBIAL ACTIVITIES OF Shorea foxworthyi Sym STEAM BARK METHANOL EXTRACT Andi Hairil Alimuddin; Masriani Masriani
Indonesian Journal of Chemistry Vol 8, No 1 (2008)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6019.987 KB) | DOI: 10.22146/ijc.21656

Abstract

Screening of antimicrobial activity compound from steam bark of Shorea foxworthyi Sym by Thin Layer Chromatography-Bioautography method have been conducted. The result of this research can be base in elucidation of antimicrobial activity compounds from S. foxworthyi Sym. The first step was done in this research that is maceration of S. foxworthyi steam bark using methanol solvent. Fractination to methanol extract was done using n-hexane, chloroform, and ethyl acetate solvent, respectively. Phytochemical screening were done to methanol, chloroform, n-hexane, and ethyl acetate fractions. Screening of antimicrobial activity compound were done to polar fraction such as methanol, chloroform, and ethyl acetate fraction. The bacteria were used in this screening such as E. coli, S. aureus, S. thypii, and B. Subtilis. The extract was highest antimicrobial activity choosed to test by Thin Layer Chromatography-Bioautography. The result was showed that chloroform extract was had highest antimicrobial activity and the flavonoide of compaund was considered having antimicrobial activity.
PHYTOCHEMICAL SCREENING, ANTIOXIDANT, AND CYTOTOXICITY OF Zamioculcas zamiifolia ROOT EXTRACT Rini Muharini; Masriani Masriani; Rudiyansyah Rudiyansyah
Indonesian Journal of Pure and Applied Chemistry Vol 1, No 2 (2018)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (577.788 KB) | DOI: 10.26418/indonesian.v1i2.30530

Abstract

Zamioculcas zamiifolia is an ornamental plant that had been used pharmacologycally as a traditional medicine plant. The aims of this research were to investigate the phytochemistry of n-hexane, chloroform and methanol extracts from the roots of Z. zamiifolia and to evaluate their biological activities as antioxidant and cytotoxic. All extracts were screened phytochemically using specific reagents and TLC technique to reveal the major component of each extract. The chloroform was obtained as the highest quantity of extract which gave positive test for steroids and flavonoids. All extracts were tested for their antioxidant activity using DPPH method and for their cytotoxic activity against two types of human cancer cell lines, HepG2 and T47D, and normal African green monkey kidney ephitelial cell lines, Vero. The methanol and chloroform extract exhibited antioxidant activity with  AA50 values of 180.0 and 431.5 µg/mL, respectively. Chloroform and methanol extracts showed potencial and moderate cytotoxicity towards T47D cell line with IC50 433.1 and 461.1µg/mL, respectively. None of the extracts was toxic against HepG2 and Vero cell lines.
Pengaruh Model Problem Based Learning (PBL) Terhadap Hasil Belajar Siswa Pada Materi Elektrokimia Isranti Nurul Choiriyah; Masriani Masriani; Rahmat Rasmawan; Erlina Erlina; Rody Putra Sartika
Hydrogen: Jurnal Kependidikan Kimia Vol 10, No 2 (2022): Hydrogen: Jurnal Kependidikan Kimia
Publisher : Universitas Pendidikan Mandalika Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v10i2.5797

Abstract

The aim of this study was to see how learning results differ before and after using the Problem Based Learning (PBL) model, as well as to see how the PBL learning model affects the electrochemistry material in class XII IPA SMA N 11 Pontianak. The form of research used with a research sample of 35 persons was pre-experimental using a one-group pretest-posttest design. Pre-test and post-test data collecting methods were used. The normality test with the Shapiro-Wilk test was employed in the data analysis technique, and the results of the pre-test and post-test revealed that the data were not normally distributed, with Asymp.Sig.(2-tailed) less than 0.05. The Asymp.Sig.(2-tailed) value of the Wilcoxon test was less than 0.05. These findings suggest that there are changes in learning outcomes before and after using a PBL learning paradigm as a treatment. The pre-test and post-test mean scores were 53.71 and 84.57, respectively. An increasing in learning outcomes in electrochemical material is obtained by obtaining an effect size calculation value of 1.6, or the equivalent of 33% of the contribution of the PBL model.Based on the result of the pre-test & post-test there are difference in learning outcomes before and after using the PBL.
Analysis of Students' Predicting Skills in The Concept of Reaction Rate Nurul Salima; Hairida Hairida; Ira Lestari; Lukman Hadi; Masriani Masriani; Maria Ulfah
Hydrogen: Jurnal Kependidikan Kimia Vol 11, No 1 (2023): February 2023
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v11i1.6916

Abstract

The present research aimed to describe the skills of 11th grade students in predicting reaction rate material. The need for this study arose due to the inadequacy of the teacher's assessments to elaborate on the students' predictive skills, particularly in reaction rate material. The participants were 26 students from the 11th grade Science-2 class of State Senior High School (SMAN) 5 Pontianak. A quantitative description with a case study approach was used to gather data. The students were administered a questionnaire immediately after the reaction rate lesson, consisting of three questions. The mean scores of the students were analyzed to determine the results. The results showed that 50% of the students were categorized as having a very low level of skill in predicting reaction rate material, 27% as having a low level, 19% as having a medium level, 4% as having a high level, and 0% as having a very high level. It can be concluded that the majority of the students have a very low level of skill in predicting reaction rate material. The findings of this study have implications for teachers in creating more suitable lesson plans, syllabi, and media to align with the students' standard of competency outlined in the curriculum. This study may also serve as a foundation for future research on knowledge and education sustainability.
DEVELOPMENT OF DOCUMENTARY FILM MEDIA ON WATER POLLUTION MATERIALS TO SUPPORT SCIENCE LEARNING IN JUNIOR HIGH SCHOOLS Febiola Pastika Sari; Masriani Masriani; Rahmat Rasmawan; Rachmat Sahputra; Rody Putra Sartika
INFOKUM Vol. 10 No. 5 (2022): December, Computer and Communication
Publisher : Sean Institute

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

Abstract

This research is about a documentary film of water pollution that can improve student learning outcomes with contextual learning involving the dual senses, namely the sense of hearing and the sense of sight. This study aims to determine the feasibility of water pollution documentary film media to support science learning in junior high schools. This research is based on observations and interviews of teachers and students. The research method used is Research and Development (R&D) with the ADDIE development model the stages used are analysis, design and development. The subject in the study was a documentary film of water pollution. Data collection techniques in this study used direct communication during interviews with teachers and students as well as indirect communication in the form of instrument feasibility assessment sheets, media feasibility validation questionnaires consisting of 3 media experts and 3 material experts. This study shows that the validation results carried out obtained a percentage for the media aspect of 91.63 and the material aspect of 86.13 from this percentage result, it can be concluded that the media is suitable for use at the implementation stage.
PENGEMBANGAN BUKU PENGAYAAN BERBASIS LITERASI KIMIA DALAM KEARIFAN LOKAL MASYARAKAT KABUPATEN SAMBAS Era Pandriani; Hairida Hairida; Masriani Masriani; Eny Enawaty; Husna Amalya Melati
Jurnal Ilmiah Ar-Razi Vol 10, No 2 (2022): JURNAL ILMIAH AR-RAZI
Publisher : Universitas Muhammadiyah Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29406/ar-r.v10i2.2918

Abstract

Penelitian ini bertujuan untuk mengidentifikasi kearifan lokal masyarakatKabupaten Sambas yang relevan dengan materi kimia SMA, mengetahui kelayakanbuku dan respon guru serta respon siswa terhadap buku berbasis literasi kimia dalamkearifan lokal masyarakat Kabupaten Sambas sebagai buku pengayaan. Bentukpenelitian ini adalah penelitian dan pengembangan (R&D) yang mengadopsi modelpengembangan Borg & Gall dengan menggunakan pedoman wawancara, lembarobservasi, dan angket sebagai alat pengumpul data. Buku yang telah dikembangkandalam penelitian ini divalidasi oleh tujuh ahli yang terdiri atas tiga ahli isi dan penyajian,dua ahli bahasa, dan dua ahli grafika. Reponden dalam penelitain ini adalah dua gurupengampu mata pelajaran kimia SMA dan enam siswa dari SMAN 1 Teluk Keramat,serta enam siswa dari SMAN 2 Teluk Keramat. Hasil menunjukkan bahwa terdapat tigakearifan lokal masyarakat Kabupaten Sambas yang relevan dengan materi kimia SMAyaitu kearifan lokal membawa garam ke hutan, kearifan lokal betangas, dan kearifanlokal mengilapkan lantai menggunakan ampas kelapa. Nilai kelayakan buku yangdikembangkan dalam penelitian ini adalah 94% dengan kategori sangat layak. Hasilrespon yang diperoleh juga sangat tinggi yaitu 97% respon guru dan 85% respon siswa.
Development of Google Site-Based E-LKPD to Improve Students' Understanding of Ion Bond Material Arit Arit; Masriani Masriani; Maria Ulfah; Rahmat Rasmawan; Rody Putra Sartika
Hydrogen: Jurnal Kependidikan Kimia Vol 11, No 5 (2023): October 2023
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v11i5.8875

Abstract

This research aims to determine the feasibility of Google site-based E-LKPD on class X ion bond material at SMA Negeri 1 Galing. The population in this study was 25 class X students and samples were taken using a random sampling technique totaling 5 people. This research uses the R & D (Research and Development) research method with the ADDIE model which focuses on the Analysis, Design and Development stages. At the development stage, a feasibility test was carried out by five validators with two assessment aspects, namely material and media using the Content Validity Index (CVI) as a feasibility test.
Analisis Kemampuan Literasi Sains Mahasiswa Pendidikan Kimia di Universitas Tanjungpura Tiya Ruslina Putri; Masriani Masriani*; Rahmat Rasmawan; Hairida Hairida; Erlina Erlina
JIPI (Jurnal IPA dan Pembelajaran IPA) Vol 6, No 2 (2022): JUNE 2022
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jipi.v6i2.25460

Abstract

A prospective teacher needs have to qualified scientific literacy skills so that students have good abilities in learning science-related knowledge. However, assessments to measure students' scientific literacy skills that are adapted to PISA aspects are also still rarely carried out. Therefore, describing the scientific literacy ability of Chemical Education students at Tanjungpura University are needed. This research used quantitative descriptive method which aimed to describe students' scientific literacy skills. The sampling technique used is a saturated or full sampling technique which is samples are taken from all members of the population. The subjects of this study were students of Chemistry Education at Tanjungpura University as many as 45 students. Data collection techniques in this study are direct measurement and communication techniques. The measurement technique is done by giving a test in the form of three essay questions. Direct communication techniques in the form of semi-structured interviews to support research data and confirm student answers. Data collection tools in this research were scientific literacy tests and semi-structured interviews. The data were analyzed by providing a score of the results of the scientific literacy test, calculating the average test score, and determining the category of scientific literacy. Based on the results of data analysis, students' scientific literacy skills with an average percentage of content knowledge with competence in identifying scientific questions of 39.62%, procedural knowledge with competence to explain scientific phenomena by 26.38%, and epistemic knowledge with competence in using scientific evidence by 23.33%
Co-Authors AA Sudharmawan, AA Andi Hairil Alimuddin Arit Arit Eny Enawaty Era Pandriani Erlina Erlina Erlina Fazrul Aprilyani Febiola Pastika Sari Hairida Hairida Husna Amalya Melati Ira Lestari Isranti Nurul Choiriyah Lukman Hadi Lukman Hadi Maria Ulfah Nurul Salima Rachmat Sahputra Rahmat Rasmawan Rini Muharini Rody Putra Sartika Rudiyansyah Rudiyansyah Tiya Ruslina Putri