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SAINTIFIKA
Published by Universitas Jember
ISSN : 14415433     EISSN : 25052768     DOI : https://doi.org/10.25037/saintifika.v24i2.130
Core Subject : Health, Science, Education, Agriculture, Social, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Health Professions Mathematics Medicine & Pharmacology Physics Social Sciences
SAINTIFIKA: Jurnal Ilmu Pendidikan MIPA dan MIPA publishes a scientific paper on the results of the study and review of the literature in the sphere of natural science education in primary education, secondary education and higher education. Additionally, this journal also covers the issues on environmental education. SAINTIFIKA: Jurnal Ilmu Pendidikan MIPA dan MIPA is issued two times annually, i.e. Juny and December. The number of articles is 7 articles per year. Every article that is sent to the Editor, will be reviewed and scrutinized by the editorial board for eligibility or publication without diminishing the substance of the article.
Arjuna Subject : Ilmu Sosial - Pendidikan
Articles 5 Documents
 1 
Search results for , issue "Vol 24 No 1 (2022)" : 5 Documents clear
PENGEMBANGAN E-LKPD BERBASIS PROBLEM BASED LEARNING UNTUK MENINGKATKAN KETERAMPILAN PROSES SAINS SISWA SMP Wulan Safitri; Aris Singgih Budiarso; Sri Wahyuni
saintifika Vol 24 No 1 (2022)
Publisher : FKIP Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (215.542 KB)

Abstract

The Covid-19 pandemic has caused several impacts, one of which is in the field of education. Teachers must innovate to develop media to facilitate distance learning systems. One of the media that can be used is E-LKPD based on Problem Based Learning. E-LKPD based on Problem Based Learning, namely learning media that is presented in an electronic format based on Problem Based Learning. This study aims to develop Problem Based Learning-based E-LKPD to improve the science process skills of junior high school students. The type of research used is R&D research with development design using the ADDIE model. The results obtained are that the Problem Based Learning-based E-LKPD that was developed can be used as a learning medium during the pandemic to improve students' science process skills. This is because E-LKPD based on Problem Based Learning contains a problem to be solved by students.
The Perbandingan Toksisitas Supernatan dan Endapan Ekstrak Terpurifikasi Daun Mindi (Melia Azedarach L.) terhadap Mortalitas Larva Nyamuk Aedes Aegypti L. Rachmita Mustika Putri; Dwi Wahyuni; Kamalia Fikri
saintifika Vol 24 No 1 (2022)
Publisher : FKIP Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (196.292 KB)

Abstract

One of the efforts to replace chemical insecticides to eradicate DBD is to obtain natural larvicides and it’s so environmentally friendly. Vegetable insecticides are carried out using a purified extraction process. The purpose of this study was to compare the toxicity of the supernatant and precipitated purified extract of mindi leaf (Melia Azedarach L.) on the mortality of Aedes aegypti L mosquito larvae. The samples used in this study ranged from 600-700 Aedes aegypti L mosquito larvae. This study used a design design. Completely Randomized (CRD) and the Minitab 14 for Windows application help to perform the analysis. The results showed the comparison of the toxicity of the purified extract supernatant of mindi leaf (Melia azedarach L). lower with an LC50 value > 1000 while the toxicity of the precipitated purified extract of mindi leaves (Melia azedarach L). higher with LC50 value < 1000. This research can be further tested regarding the magnitude of the toxicity in this study related to the measurement of environmental factors and also related to the KLT test to determine the possibility of new compounds, which are synergistic in the precipitate (fraksi etanol) and supernatant (fraksi n-heksan) in purified mindi leaf extract (Melia azedarach L).
EFEKTIVITAS BUKU AJAR DIGITAL SISTEM EKSKRESI BERBASIS BRAIN-BASED LEARNING DILENGKAPI DENGAN AUGMENTED REALITY DAN COUPLE CARD DALAM MENINGKATKAN HASIL BELAJAR SISWA SMA Amalia Nurul Imamah; Jekti Prihatin; Pujiastuti Pujiastuti
saintifika Vol 24 No 1 (2022)
Publisher : FKIP Universitas Jember

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Abstract

In this 21st century, education has been growing rapidly in an aspect of knowledge. This increase in knowledge is supported by the application of digital media and technology. One of the uses of technology in education is digital textbooks. This technology is very helpful for online learning during the COVID-19 pandemic. Based on the digital textbook, Brain-Based Learning approach could be empowered student's brain potential as a whole in processing and thinking. This research aims to produce effective digital textbooks to increase the interest and learning outcomes of high school students. The design of the textbook development used refers to the ADDIE model (Analysis, Design, Development, Implementation, and Evaluations). The effectiveness of the developed digital textbooks has been seen based on the interest questionnaire and student learning outcomes. The average result of the student interest questionnaire was 86.65 with a very good category. The average value of Effect size is 0.66 with a medium effect category (Medium Effect).
Toksisitas Ekstrak Terpurifikasi dengan N-heksan Buah Kecubung (Datura metel L.) terhadap Mortalitas Larva Nyamuk Aedes aegypti Aditya Rico Armyandi; Dwi Wahyuni; Kamalia Fikri
saintifika Vol 24 No 1 (2022)
Publisher : FKIP Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (195.575 KB)

Abstract

Infectious diseases caused by animal vectors are currently still a health problem in the world even in Indonesia, especially the Aedes aegypti mosquito which is the vector for the spread of dengue fever. Chemical control is still a priority for the community, such as the use of abate. Continuous use of abate can cause resistance to the Aedes aegypti mosquito to the next generation and pollute water conditions. One of the control solutions can be done with natural insecticides such as amethyst fruit (Datura metel L.). The purpose of making purified extracts is to remove unnecessary impurities and get a larger content of active compounds and increase the concentration of active compounds. The concentration of amethyst extract (Datura metel L.) used was a concentration of 100 ppm, 500 ppm, 1000 ppm, 1500 ppm, 1gr abate as a positive control and aquades as a negative control. The amount of Lethal Concentration-50 (LC50) purified extract of amethyst fruit (Datura metel L.) with n-hexane was 494.987 ppm. The active compound content of amethyst fruit (Datura metel L.) in the n-hexane fraction after a phytochemical screening test was carried out was positive for alkaloids, steroids, terpenoids and tannins. The toxicity of the purified extract with n-hexane of amethyst (Datura metel L.) against Aedes aegypti mosquito larvae within 24 hours is considered toxic because it has an LC50 value of less than 1000 ppm.
Toksisitas Ekstrak Terpurifikasi Daun Buas-Buas (Premna serratifolia L.) terhadap Mortalitas Larva Nyamuk Culex sp. Ulmiyatul Alifiah Zahroh; Dwi Wahyuni; Mochammad Iqbal
saintifika Vol 24 No 1 (2022)
Publisher : FKIP Universitas Jember

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Abstract

Culex sp. is a vector of filariasis. Vector control mostly uses chemical insecticides which have a negative impact. Buas-buas plants (Premna serratifolia L.) are one of the plants that have the potential as an alternative to the use of chemical insecticides that have been widely used (as botanical insecticides). Buas-buas leaves (Premna serratifolia L.) contain alkaloids, flavonoids, saponins, and tannins. This study aimed to test the toxicity of the purified extract of buas-buas leaf (Lethal concentration 50) on the mortality of Culex sp. larvae with an exposure time of 24 hours. Serial concentrations of purified extract used were 850, 1350, 1850, 2350, and 2850 ppm with four repetitions. Each treatment used 20 Culex sp. late three to early four instars. Toxicity testing of Culex sp. gives an LC50 result of 1799.77 ppm..

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