Abstrak: Penelitian ini bertujuan untuk menghasilkan perangkat pembelajaran IPA materi listrik dinamis menggunakan media KIT listrik yang dilengkapi PhET yang valid, praktis, dan efektif untuk melatihkan keterampilan proses sains siswa SMP. Penelitian dilaksanakan dengan menggunakan tiga tahap dari model 4-D, yaitu tahap pendefinisian (define), perancangan (design), pengembangan (develop) dan diujicobakan di kelas IX SMP Negeri 1 Kertek Wonosobo semester ganjil tahun pelajaran 2016/2017 dengan rancangan penelitian One Group Pretest-Posttest Design. Parameter penelitian yang diukur adalah validitas, kepraktisan, dan efektivitas perangkat pembelajaran. Pengumpulan data menggunakan metode observasi, angket, dan tes. Teknik analisis data menggunakan metode analisis deskriptif kuantitatif dan kualitatif. Hasil penelitian menunjukkan perangkat pembelajaran IPA menggunakan media KIT listrik yang dilengkapi PhET untuk materi listrik dinamis yang dikembangkan valid, praktis, dan efektif untuk melatihkan keterampilan proses sains siswa.Kata Kunci: Kit listrik, perangkat pembelajaran, keterampilan proses sains, simulasi PhET

Applications of pesticides on crop land have been used by soybean land farmer in Jombang, Lamongan and Probolinggo in order to control pest. Pesticide application of soybean land influence physic and chemistry soil, against growth of plant furthermore. This study aimed to identify soil physic and chemistry characteristic on pesticide application of soybean land. This study used sampling purposive method on soybean land in Jombang, Lamongan and Probolinggo District. The data were taken by purposive on pesticide application between pre and post soybean cultivation. Parameters included of soil physic (soil mass, soil porosity, water level, soil texture and determination of soil class), soil chemistry (composition of C-Organic, Total of N, Ratio C/N, P and organic matter). The data were analyzed quantitative and qualitative descriptive. Data analysis showed pesticide application of soybean land in Jombang, Lamongan and Probolinggo included intermediate category with composition 1,19-1,25 g cm -3 and contain of particle type were 2,30-2,38 g cm -3 , soil porosity accord to ideal land criteria 46,08-49,30%, water level were higher than free capacity limit (0,33 pF) with classification water available, soil texture on T2 class were slightly smooth, at every location C-Organic compositions included low category (0,58-0,94%), low total of N (0,09-0,15%), C/N ratio in low category up to 6-9, P total were varied, from low (J3 dan J2) were 11,90 mgkg -1 and 11,94 mgkg -1 , intermediate (J1, L3, P2 dan P3) up to 19,72-22,59 mgkg -1 , another three locations L1, L2, and P1 included of high category, were 36,82-38,48 mgkg -1 . Organic matters composition.

Lapindo hot mud to overflow and flood the east coast of Sidoarjo for 9 years has caused changes in environmental factors, particularly aquatic ecosystems environment. This has an impact on biodiversity of aquatic ecosystems in the eastern coastal Sidoarjo. This study aims to determine the quality of aquatic ecosystems on the east coast of Sidoarjo contaminated by Lapindo hot mud and the impact on biodiversity of aquatic organism. Data taken from 5 station consists of wetlands ecosystems, river, brackish water ponds, estuaries, and coastal covering area districts of Porong, Jabon, Tanggulangin, and Sidoarjo, East Java, Indonesia. Determination of stations and substations did purposively based on distribution maps Lapindo hot mud. Data obtained in the form of physical and chemical parameters of waters, biodiversity of aquatic organism analyzed descriptively and quantitatively, and compared as well as the quality standard. The results showed contamination of aquatic ecosystems by Lapindo hot mud has led to changes environment factors and declining biodiversity of the aquatic organism in the eastern coastal of Sidoarjo.

The development and use of diagnostic tests in the form of multiple choice four levels in biology learning are still lacking. This study aims to develop a valid and reliable four-tier multiple-choice test instrument to identify the conception profile of high school students on the concept of transport across membranes. The research method is in the form of development research by adapting the Kilic and Saglam models which consist of three stages, namely defining content, obtaining information on student misunderstandings, and developing tests. The research instruments used were validation sheets, test instruments, and interview sheets. Descriptive statistical analysis techniques were used to analyze the data in this study. The results showed that 15 items developed were declared valid and the reliability coefficient of the test was 0.82, including the very reliable category. Thus, it can be concluded that the four-tier multiple-choice test instrument developed has met the validity and reliability requirements to identify the conception profile of high school students about the concept of transport across membranes. The four-tier multiple-choice test developed can be used by high school teachers as an accurate test to identify the conception profile of their students because it can distinguish between students who understand the concept, do not understand the concept, or who experience misconceptions about the concept of transport across membranes.

The purpose of research is produced using probiotic fermented feed that can increase: the growth rate (SGR), and  feed efficiency (FCR).  The research was conducted in July and November 2016. The research design used is CRD with 4 treatments and 3 replications, consisting of  without given a probiotic (0%), probiotics 5%, 10% and 15% of the total feed given, for all waters treatment probiotics added to one liter every single week. Media for microbial growth added "medicinal" (white turmeric, ginger, red ginger) containing bioactive and improve immunity, pineapple source of vitamin C, sugar, bran and molasses energy sources and dairy sources of protein that are suitable for growth and multiply microbes. Parameters: SGR and FCR. Analysis of data using Anova, followed by Duncan test. The results showed probiotics in feed and aquaculture waters have a significant influence on the SGR and  FCR (P <0.05). Giving 15% of probiotics produce the best catfish SGR: 3.3867 ± 0, 24440%. Giving 5% probiotics produce the best FCR 1.5733 ± 0.0987.   Keywords: Probiotics, SGR, FCR, catfish

This study aimed to produce a guided inquiry learning science model through flipbook media which is appropriate for training critical thinking skills for junior high school students on the Human Respiratory System material. The development of the device is a modification of the 4-D model which was tested on eighth grade students of the junior high school even semester semester 2019/2020 and was repeated twice. This is One-Group Pretest-Posttest Design research design and the data collection uses the method of validation, observation, tests, and questionnaires. The research data generated are validity, practicality, and effectiveness of learning devices analyzed descriptively quantitative and qualitative. The results showed that (a) learning devices developed were categorized as very valid, (b) learning activities were carried out very well with an average score of 3.69, (c) student activities in learning were carried out very well, (d) student responses to learning inquiry was very good (95.99%), and (e) the results of students' critical thinking tests had a high increase, critical thinking skills increased from 28.37 (Very Less Critical) to 81.21 (Critical). The conclusion of the science learning device with guided inquiry learning model through the developed flipbook media is appropriate to be used to train students' critical thinking skills.

The purposed of this research was 1) described the nutrient quality of organic fertilizer made from water hyacinth with the addition of corncobs waste and soybean dregs, 2) described the difference in quality of the organic fertilizer made from water hyacinth with the addition of corncobs waste and soybean dregs, 3) described the best quality from organic fertilizer made from water hyacinth with the addition of corncobs waste and soybean dregs. The method of this research was experimental with completely randomized design. The experiment consisted of one treatment factor namely the type of raw material water hyacinth which included three types, namely P1: with the addition of corncobs waste; P2: with the addition of soybean dregs; P3: with the addition of corncobs waste and soybean dregs (50%:50% ratio). Each type of treatment was carried out three times so that the sample amounted 9. The measured parameters were nutrient content included C, N, C/N, P, K, and pH. The research was conducted at the Ecology Laboratory, FMIPA, Unesa. Data was analysed by descriptively quantitative and statistically used 1-way Anava. The results showed that 1) Based on the criteria of soil chemical properties, organic fertilizer content has the same quality in elements C, N, K, C/N (very high), pH neutral, and P was very low, 2) There was a difference in the effect of the type of material on the amount of nutrient content of organic fertilizer, 3) Water hyacinth that addition with corncobs waste had a higher amount nutrient in several elements namely C, N, K, C/N. Whereas organic fertilizer with addition soybean dregs had a higher amount of content in the element P.

This study aims to produce science instructional sets Guided Discovery Model Assisted Microscope Simple to facilitate science process skills and students’ understanding concepts. The instructional sets developed are Syllabus, Lesson Plans, Worksheets, Simple Microscope Media, Science Process Skills Test, and Concepts Understanding Test. This type of research is the instructional sets development research. The  instructional sets development model used is the instructional sets development of 4D Model. The experiment of instructional sets was conducted at SMP Negeri 2 Losari Brebes by using One Group Pretest-Posttest Design. The instruments used in this study were the validation sheets of instructional sets, the observation sheets of the  implementation of Lesson Plans, the students’ activities, the assessment sheets of  science process skills and concepts understanding, the observation sheets of attitude and the questionnaires. Data analyzing technique used were descriptive analysis of quantitative and qualitative. The result of this research shows that the instructional sets developed are valid and can be used. The implementation of instruction are 100% done with very good category done. The most dominant of students’ activity is doing observation/investigation using simple microscope. Science process skills and students’ concepts understanding increases by value of N-Gain at middle category. The positive response of students towards the instruction is 86% with very strong category. Based on the results of data analysis, it can be concluded that the instructional sets with Guided Discovery Assisted Simple Microscope are feasible (valid, practical, and effective) to use to facilitate science process skills and students’ concepts understanding