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Nadia Amida
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Alotrop Jurnal Pendidikan dan Ilmu Kimia
Published by Universitas Bengkulu
ISSN : 22528075     EISSN : 26152819     DOI : -
Core Subject : Science, Education,
Chemistry Education
Welcome to the Journal Alotrop, is an Open-Acces and peer-reviewed journal aims to publish scientific articles related to chemistry and education :i.e an interaction between natural sciences, educational sciences, technologies and management for both education and sciences and wise use of resources. We particularly encourage manuscripts that discuss contemporary research that can be used directly or inderecly in adressing critical issues and sharing of advanced knowledge and best practices in chemistry and education.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 218 Documents
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PENGEMBANGAN E- MODUL KIMIA MENGGUNAKAN APLIKASI FLIP PDF CORPORATE EDITION PADA MATERI LARUTAN PENYANGGA Novia Anjani Safitri; Elvinawati; Salastri Rohiat
ALOTROP Vol. 6 No. 2 (2022): Pembelajaran Abad 21
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/alo.v6i2.25512

Abstract

ABSTRACT This research aims to find out the exact responses and students’ respons to the developed chemistry e-module. The research was carried out in September-November 2021 at the University of Bengkulu and Senior High School Number 7 Bengkulu City. The development model used in this study is the 4-D (Four-D) model of Thiagarajan which is limited to the development stage. The sample used in the small-scale trial was 12 students from class XII IPA 5. The research data was obtained from the validation of material experts and media experts as well as student responses. From the results of the study, it was found that the chemical e-module in the media aspect was 94.14% and the material aspect was 85.29%, so that the chemical e-module can be categorized as very valid. The results of the student response test to the chemical e-module on a small-scale trial the percentage was 88.33% with a very good category. The results of this study indicate that the chemical e-module using the Flip PDF Corporate Edition application on the buffer material that has been developed is very feasible to be used in the learning process. Keywords : E-module, Model 4-D (Four-D), Flip PDF Corporate Edition
PEMBUATAN E-MODULE BERBASIS GUIDED DISCOVERY LEARNING PADA MATERI LARUTAN PENYANGGA Rima Mayesmy Harahap; Elvinawati; Nurhamidah
ALOTROP Vol. 6 No. 2 (2022): Pembelajaran Abad 21
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/alo.v6i2.25514

Abstract

ABSTRACT This research on making a Guided Discovery Learning (GDL) based chemistry E-module aims to help students understand the buffer solution material more easily and is oriented towards creating meaningful learning. E-module creation using the ADDIE development model. The research was conducted at SMA Negeri 4 Bengkulu City with a research sample of 12 students of class XII MIPA 4 for small-scale trials. The research data were obtained from interviews, material and media validation questionnaires and student response questionnaires. From the research results obtained (1) the feasibility level of the E-module on the material aspect was 93.11% while from the media aspect it was 88.33% so that based on the results of the validation by the E-module validator it was declared very valid, (2) the percentage of E-module achievement increating meaningful learning was 90% with very valid criteria, (3) the percentage of conformity of the E-module component with the cognitive level of Bloom’s taxonomy was 100% with high criteria. and (4) student response to the E-module was 84,16% with very interesting criteris, so it was known that the E-module that has been made interesting and feasible to use because it can make it easier for students to understand learning materials and can create meaningful learning. Keywords: E-module, Guided Discovery Learning, Buffer Solution, ADDIE.
PENGEMBANGAN E-MODUL KIMIA BERORIENTASI LITERASI SAINS PADA MATERI KESETIMBANGAN KIMIA DI SMA NEGERI 3 BENGKULU TENGAH Ronawati Silaban; Rina Elvia; Febrian Solikhin
ALOTROP Vol. 6 No. 2 (2022): Pembelajaran Abad 21
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/alo.v6i2.25515

Abstract

This study aims to determine the level of feasibility and students responses to the scientific literacy-oriented chemistry e-module on chemical equilibrium material. This research is a development research that uses the ADDIE development model. The ADDIE development model consists of 5 stages, namely; Analysis (analysis), Design (design), Development (development), Implementation (implementation), and Evaluation (evaluation), but in this study is limited to the implementation stage. The sampling technique used purposive sampling, namely class XI MIPA 1 at SMA Negeri 3 Bengkulu Tengah, totaling 29 students. The research data were obtained from media expert validation questionnaires, material expert validation questionnaires, and student responses to the developed e-module. The feasibility level of the e-module based on media expert validation is 94.31% which states that the display in the e-module is feasible from the media aspect, material expert validation is 89.77% which states that the material in the e-module is feasible from the material aspect and science literacy orientation. The response of students to the e-module was 85.73% which stated that the students gave a very positive response to the developed e-module. This shows that the scientific literacy-oriented chemistry e-module on chemical equilibrium material is very suitable for use in the learning process.
PENGEMBANGAN LEMBAR KERJA PESERTA DIDIK (LKPD) DIGITAL BERBASIS GUIDED INQUIRY MENGGUNAKAN LECTORA INSPIRE 18 DAN LIVEWORKSHEET PADA MATERI SISTEM KOLOID Avischa Esty Wandani; Salastri Rohiat; Dewi Handayani
ALOTROP Vol. 6 No. 2 (2022): Pembelajaran Abad 21
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/alo.v6i2.25516

Abstract

This development research aims to determine the level of feasibility and student response to the developed digital LKPD. The research was carried out in June-August 2021 at Bengkulu University and SMAN 08 Padang Jaya Bengkulu Utara. The development model used in this study is the ADDIE model which consists of 5 stages, namely, Analysis, Design, Development, Implementation, and Evaluation. The sample used in this study was class XII IPA. The trial was conducted on a small scale with 12 students of class XII science. The research data was obtained from a validation questionnaire of material experts and media experts as well as student response questionnaires. From the results of the study, it was obtained that the feasibility level of digital LKPD in the material aspect was 85% with a very valid category. Meanwhile, the media aspect is 85,6% with a very valid category. The results of student responses to digital LKPD in small-scale trials obtained a percentage of 87.03% with a very interesting category. The results of this study indicate that the Digital LKPD developed is very feasible to be used in the learning process.
PENGEMBANGAN E-LKPD BERBASIS VIRTUAL LABORATORY PhET DILENGKAPI KETERAMPILAN PROSES SAINS PADA MATERI ASAM BASA (Research And Development) Febri Nurason; Hermansyah Amir; Nadia Amida
ALOTROP Vol. 6 No. 2 (2022): Pembelajaran Abad 21
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/alo.v6i2.25517

Abstract

This study aims to determine the feasibility, student responses and the completeness of science process skills on the PhET E-LKPD with acid-base material. This research is a research and development that adapts the 4D model which is limited to the third stage, namely the development stage. The data in this study were obtained from the results of interviews, material and media validation questionnaires and student response questionnaires. The population in this study were students of class XI MIPA 4 SMAN 3 Bengkulu City with 17 people. The results of the material and media test of E-LKPD PhET obtained values of 93.18% and 88.64% which are included in the very feasible category dan while the results of the student response test to the PhET E-LKPD obtained a value of 89.26% which is included in the very feasible category. The prepared PhET E-LKPD has been equipped with aspects of science process skills such as observing, formulating hypotheses, designing experiments, taking measurements, interpreting data, concluding and communicating. So it can be concluded that the PhET E-LKPD is suitable for use in the learning process. Keywords : E-LKPD, PhET, Acid-Base
ANALISIS LOGAM BERAT Pb, Fe DAN Mn AIR TANAH SEKITAR TEMPAT PEMBUANGAN AKHIR SAMPAH TANGERANG Nita Rosita
ALOTROP Vol. 7 No. 1 (2023): Alotrop 2023
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/alo.v7i1.23239

Abstract

Telah dilakukan penelitian tentang analisis logam timbal (Pb), besi (Fe) dan mangan (Mn) air tanah sekitar tempat pembuangan akhir (TPA) sampah Sukadiri Kabupaten Tangerang. Tujuan penelitian untuk mengetahui kandungan logam Pb, Fe dan Mn kemudian dibandingkan dengan baku mutu air bersih. Teknik pengambilan sampel menggunakan metode purposive sampling dan dianalisis secara deskriptif numerik. Tujuh sampel air tanah diambil dengan radius 400-1000 meter dari TPA. Kandungan Pb, Fedan Mn di ukur menggunakan metode Standar Nasional Indonesia (SNI) secara spektrofotometer serapan atom (SSA). Berdasarkan penelitian laboratorium diperoleh kandungan logam Fe antara 0,02-1,16 mg/L, kandungan logam Mn antara 0,23-3,55 mg/L, dan kandungan logam Pb tidak terdeteksi. Hasil penelitian menunjukkan bahwa 5 sampel melampaui baku mutu kualitas air bersih
A REVIEW POTENSI DAUN SEMBUNG (Blumea balsamifera (Lin.) DC) SEBAGAI AGEN ANTIKANKER PAYUDARA Diah Ayu Aguspa Dita, S.Kep, Ners, M.Biomed; Risti Dwi Ocktaviani; Maeike Grestiana Sinaga; Dwiani Ratna Sari
ALOTROP Vol. 7 No. 1 (2023): Alotrop 2023
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/alo.v7i1.24604

Abstract

Breast cancer is the leading cause of death in women caused by the development of abnormal cells in the breast that continue to multiply. Current cancer therapy is surgery, radiation and/or chemotherapy. Breast cancer therapy currently being carried out can cause various side effects. One of the natural ingredients that have the potential as anticancer is Sembung (Blumea balsamifera) leaves. This journal review aims to provide information about the effect of giving Sembung leaf herbal tea (Blumea balsamifera) on breast cancer. This paper is the result of a review in June 2021-June 2022 using the design of this study is a literature review. Search publication articles on PubMed, google scholar, elsevier, science direct, PMC, Cochrane, Nature, and EBSCO using selected keywords, namely: active compound content in Blumea balsamifera, breast cancer, anticancer using keywords selected based on PICO. The results of various information prove that Sembung leaves have excellent potential in inhibiting cell growth, where Sembung leaves contain dihydroflavonol, luteolin-7-methyl ether, bioflavonoids, L-borneol, and essential oils. The mechanism of sembung leaf as an anticancer agent is by suppressing cancer cell proliferation, inducing apoptosis, inhibiting the P-GP efflux pump, and inhibiting cancer cell angiogenesis. How to use sembung leaves as an anticancer agent, namely: preparation of tools and materials, determination of plants, taking sembung leaves, extracting simplicia, and dissolving in water with an unknown concentration. Side effects that arise from the use of sembung leaves are itching and skin irritation. Keywords: Blumea balsamifera, Breast Cancer, Anticancer
Eco-friendly silver nanoparticles (AgNPs) fabricated by green synthesis using Capsicum annum L. extract: biosynthesis, characterization, and antibacterial activity Erna Fitriany Fitriany; Andri Priyoherianto; Panji Ratih Suci
ALOTROP Vol. 7 No. 1 (2023): Alotrop 2023
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/alo.v7i1.26546

Abstract

Silver nanoparticles (AgNPs) have many benefits in the health sector, it has antimicrobial and biomedical Activity. AgNPs can be synthesized by using green chemistry or using chemical substances, such as NaBH4. Green synthesis of AgNPs is an environmentally friendly alternative and has cost-effective production. Capsicum annuum L. combined with Saffron extract was used to synthesize AgNPs. The biosynthesis, characterization, and antibacterial activity of AgNPs were studied in this research. The synthesized AgNPs were characterized by UV- Visible spectroscopy (UV-Vis), Fourier- transform Infrared Spectroscopy (FTIR), and Particle Size Analyzer (PSA). The formation of AgNPs was confirmed by optical performance using UV-VIS spectroscopy and showing a peak of AgNPs at 407 nm. Capsicum Annuum L. combined with Saffron extract contained C-H, C-N, and C=O groups. The particle size was characterized using PSA, the size is 37,74 nm. Capsicum Annuum L. combined with Saffron extract has good antibacterial activity.  Keywords: Green Synthesis, AgNPs, Capsicum annuum L, Saffron.
PENGEMBANGAN E-MODUL INTERAKTIF PADA MATERI TERMOKIMIA DI SMA NEGERI 3 KOTA BENGKULU Rifki Nomizar; Hermansyah Amir; Salastri Rohiat
ALOTROP Vol. 7 No. 1 (2023): Alotrop 2023
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/alo.v7i1.28014

Abstract

This study aims to develop teaching materials in the form of an Interactive E-Module on Thermochemistry at SMA Negeri 3 Bengkulu City. The feasibility of this Interactive E-Module is based on the assessment of media experts and material experts. Products that are declared feasible, are known to be attractive based on a questionnaire response to the interest of students and teachers. This type of research is Research and Development (R&D) with the ADDIE type of research model. There are 2 media and material validators each who are competent in their fields. The small-scale test sample was 12 students with purposive sampling technique and for the teacher's interest response test as many as 3 chemistry teachers. The results of the feasibility of the interactive E-Module are based on the assessment of media experts getting very valid qualifications with an average percentage of 94.50%, material validation getting very valid qualifications with an average percentage of 93.88%, student responses getting very interesting qualifications with an average percentage of 91.41% and the teacher's response to getting very attractive qualifications with an average percentage of 90.55%. This shows that the interactive E-Module on the thermochemical material produced in this study is considered very feasible to be used in learning.
PENGEMBANGAN ALAT EVALUASI KOGNITIF BERBASIS ISPRING SUITE 9 PADA MATERI LARUTAN PENYANGGA DI SMA NEGERI 9 KOTA BENGKULU Pratiwi Kiki Ramadhanti; Wiwit Alwi; Febrian Solikhin
ALOTROP Vol. 7 No. 1 (2023): Alotrop 2023
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/alo.v7i1.28020

Abstract

This research was a research and development to produce a cognitive evaluation tool based on iSpring Suite 9. The purpose of this study was to determine the feasibility of items and a cognitive evaluation tool based on iSpring Suite 9 on buffer solution material in terms of the assessment of material experts and media experts, knowing the validity empirical and reliability of the items on the cognitive evaluation tool based on iSpring Suite 9 on buffer solution material, and knowing the results of implementing the cognitive evaluation tool based on iSpring Suite 9 on buffer solution material in class XI MIPA 1 SMA Negeri 9 Bengkulu City. The development model used was the ADDIE development model which consists of analysis, design, development, implementation, and evaluation. This research was conducted at SMA Negeri 9 Bengkulu City with the research subjects being 10 students of class XI MIPA 1 for small-scale trials and 30 students of class XI MIPA 1 for field testing. The results obtained (1) the feasibility level of cognitive evaluation tools on the material aspect was 94.25% and from the media aspect was 90.83% or in the very feasible category, (2) based on the results of empirical validation obtained 20 valid items, (3) based on the reliability test obtained a coefficient of 0.951 which was included in the very high category, (4) based on the results of the implementation of the cognitive evaluation tool applied in the classroom, it was proven that it can be used to measure student learning outcomes with a mastery percentage of 83.3%.  Keywords: cognitive evaluation tool, iSpring Suite 9, buffer solution

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