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The Perbandingan Toksisitas Supernatan dan Endapan Ekstrak Terpurifikasi Daun Mindi (Melia Azedarach L.) terhadap Mortalitas Larva Nyamuk Aedes Aegypti L.
No full textOne 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)
TOKSISITAS EKSTRAK TERPURIFIKASI DAUN BUAS-BUAS (PREMNA SERRATIFOLIA L.) TERHADAP MORTALITAS LARVA NYAMUK CULEX SP.
Full text linkCulex 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..
Kata Kunci: Culex sp.; Premna serratifolia L. ; Terpurifikasi; Toksisita
PENGEMBANGAN E-LKPD BERBASIS PROBLEM BASED LEARNING UNTUK MENINGKATKAN KETERAMPILAN PROSES SAINS SISWA SMP
Full text linkThe 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
EFEKTIVITAS BUKU AJAR DIGITAL SISTEM EKSKRESI BERBASIS BRAIN-BASED LEARNING DILENGKAPI DENGAN AUGMENTED REALITY DAN COUPLE CARD DALAM MENINGKATKAN HASIL BELAJAR SISWA SMA
Full text linkIn 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
Full text link: 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.
Kata Kunci: Aedes aegypti; Datura metel L.; n-heksan; Terpurifikasi; Toksisita
IDENTIFIKASI KEMAMPUAN BERPIKIR KRITIS PADA PEMBELAJARAN IPA SISWA SMP NEGERI 1 GLENMORE KABUPATEN BANYUWANGI
Full text linkCritical thinking skills is the ability to reason by using deep reasoning to obtain relevant information or knowledge and be able to draw conclusions or decisions correctly, and accently. Teachers need to know condition of students’ critical thinking skills in order to design appropriate learning designs and can help in the facilitating the increasing of students’ critical thinking skills. Therefore, it is necessary to identify the critical thinking skills of junior high school students in existing science studies. The research method used in this research is decriptive research. The study conducted by identifying students’ critical thinking skills by giving critical thinking skills tests to students of SMPN 1 Glenmore who had taken the concept of energy and energy resources in the Banyuwangi of East Java. The critical thingking skills of SMPN 1 Glenmore students who have taken the concept of energy and energy resources are in the medium category
PENGEMBANGAN MEDIA PEMBELAJARAN BERBASIS ADOBE FLASH CS6 PADA MATERI SISTEM HORMON KELAS XI SMAN 1 PARENGGEAN
Full text linkThis research aims to develop learning media based on Adobe Flash CS6 on the material system of hormones that valid and practical. This research is research and development with research design model ADDIE, covering analysis, design, development, implementation, and evaluation. The instrument used a questionnaire validation is filled by media experts and material as well as a questionnaire practicality which is filled by the students. The technique of data analysis which is a technique of qualitative analysis and quantitative analysis. The results show the validation of media experts on aspects of the display of the results of 94 and aspects of programming 97, on the validation of the material to aspects of learning that is 82 and aspect of the content of 87 then the media can be said to be valid. On the questionnaire responses of students acquire 94 the media can be said to be practical.
 
KARAKTERISTIK ORGANOLEPTIK SOYGHURT EDAMAME SEBAGAI MAKANAN PENDAMPING ALTERNATIF UNTUK PENDERITA STUNTING
Full text linkStunting sufferers in Jember Regency have increased from 17,344 in2018 to 19,870 in 2019. The purpose of this study was to determine the potential ofedamame soyghurt as an alternative complementary food for stunting sufferers. Theexperimental design used was a completely randomized design (CRD) with differentcombinations of treatments on edamame juice, skim milk, and starter. The result wasanalyse of organoleptic include taste, color, aroma, and texture with hedonic testusing 10 panelists non-skilled. Based on the result of organoleptic, the average valueof preference ranges from taste between 3.2-3.4 (slightly like to like), aroma 3.6-3.9(slightly like to like), color 3.1-4.2 (slightly like to like) like), texture 3.5-4 (slightlylike to like). The best treatment was in the combination of edamame soyghurttreatment in the proportions of skim milk 150 (%w/v), edamame juice 730 (%v/v),and sucrose 50 (%w/v) with starter 70 (%w/v)
PENGGUNAAN MICROSOFT TEAMS FOR EDUCATION UNTUK MENINGKATKAN AKTIVITAS BELAJAR SISWA MELALUI MODEL PBL
Full text linkAbstract: Learning activities are activities carried out to produce changes in knowledge and skills in students. Learning activities contribute to the learning outcomes that students will get. The purpose of this study was to determine the learning activities of class XI students on the respiratory system material online at Pakusari Public High School using Microsoft Teams for Education with the PBL model. This research is a quantitative descriptive research. The study population was all students of class XI SMA Negeri Pakusari. Student learning activities are categorized as beneficial because students take part in learning by carrying out various learning activities. The conclusion is that the average learning activity of class XI SMA Negeri Pakusari respiratory system material reaches 64,35%, including the very good category. The highest percentage is mental activity with a percentage of 71%. The activity that got the lowest percentage was drawing activity with a percentage of 55%.
Keywords: Microsoft Teams for Education, Learning activity, PB
PENINGKATAN HASIL BELAJAR SISWA MELALUI MODEL KOOPERATIF DENGAN PENDEKATAN TIPE NUMBERED HEADS TOGETHER
Full text linkAbstract: In teaching and learning activities, students who are active in the learning process will gain learning experiences that will affect student learning outcomes. When the teacher only uses the lecture method in delivering material, students will tend to listen and not be actively involved in teaching and learning activities. This research is a classroom action research consisting of two cycles with different materials, each cycle consisting of four stages, namely: planning, action, observation and reflection. The population in this study were all students of class VIII B of SMPN 7 Jember in the 2019/2020 lesson, totaling 32 students. Learning outcome data is in the form of psychomoric learning outcomes in the form of mental activities and student affective learning outcomes obtained from observation sheets during the teaching process, and cognitive learning outcome data is obtained from evaluation tests. The results showed that from the two cycles taken, data was obtained that the completeness of the students' classical mental learning outcomes was 73.50% in the first cycle and 89.00% in the second cycle, respectively. Classical mastery of cognitive learning outcomes 72.10% in cycle I and 88.90% in cycle II. While the classical completeness of affective learning outcomes was 78.40% in the first cycle and 90.30% in the second cycle.
Keywords: Cooperative Model; Numbered Heads Together; Learning Outcome