bluuebunny/crossref_metadata_2025_split huggingface dataset:
Nutrient amount mangrove ecosystem in Bedono, Sayung district, Demak regency
Authors: Partaya  , Setiati N 
Published: June 2021

Abstract
The mangrove ecosystem in Bedono in some places is damage, which is caused by the erotion of the ocean current and wave. In the beginning it was the residential areas which were abandoned by residents some decade ago. These area store the organic and mineral material. The research aimed to found sediment/soil texture shore and to find out the contents of organic material (Carbon), Nitrogen, Phosphate and Pothasium/Kalium in the sediment and water in the mangrove areas. These research was conducted from February – June 2017. This research used descriptive method. The samples were taken by purposive sampling, include 3 station are Morosari (A), Tambaksari (B) and Senik/Rejosari (C). Each station was determined by three places sampling systematically. The sediment sampling were taken at a depth 10 cm and the sampling water were taken in the some places. The analysis of sediment/soil texture were carried out in the Soil Laboratory Civil Engineering Faculty, University of Diponegoro in Semarang and analysis soil and water were carried out in the Soil Laboratory, Agriculture Faculty, Gadjah Mada University in Yogyakarta. The result of the research showed that soil texture in Morosari including the kind of dusty loam texture. In Tambaksari including the kind of sandy loam to dusty loam texture., in Senik/Rejosari including sandy loam texture. The result of the research showed that the nutrient contents at the sediment in the Bedono village indicated the organic material 6,21 % (low), organic carbon 3,75 %, the dissolved organic carbon 0,09 % (low), the total nitrogen 0,20 %, and the dissolved nitrogen 8,66 ppm (low), the available phosphate at the sediment 24,73 ppm (medium) and the dissolved phosphate 0,095 ppm only the June, in February and April undetect. potassium/kalium content at the sediment was 3,75 me/100 gram (low) and the dissolved pottasium/kalium in the water was 66,93 ppm (medium). Mangrove genera in Bedono are Avicennia and Rhizophora it was associated with same mollusc species, and the dominant macrobenthos in Bedono are Cassidula sulculosa and Natica fasciata.
Improvement of high school biology teacher understanding on the national science competition subject through technical guidance
Authors: Anggraito Y U , Iswari R I , Priyono B , Purwantoyo E , Pukan K K 
Published: June 2021

Abstract
There has not been a single high school student in Brebes District who has successfully represented Central Java Province in the National Science Competition (NSC) in the last three years. The main problem is the teacher’s weak mastery of the subject to provide guidance to students, caused the mentoring process is not optimal. The purpose of this study was to improve the teacher mastery of subjects for teachers who were accompanying students in the NSC. This study used a one-group pretest-posttest design with a sample of 23 high school biology teachers who attended Technical Guidance (TG). The TG subjects were Ecology, Animal Physiology and Metabolism; Plant Anatomy and Physiology; and Genetics. The data obtained were pre-test and post-test scores, which were then analyzed using T-test and N-gain. The average result of the pre-test score was 40.22, and the post-test score was 70.27. There is an indication of teacher weaknesses in the application of the concept and data analysis. The results showed (1) there was a difference in the results of the participants’ post-test scores, which higher than the pre-test, (2) there was a significant increase in the scores between before and after technical guidance, (3) the N-gain was 0.51 in the moderate category. It could be concluded, Technical Guidance on NSC subjects is effective in improving the understanding of high school biology teachers in Brebes district.
Improving students’ communication skills and critical thinking ability with ICT-oriented problem-based learning and the assessment instruments with HOTS criteria on the immune system material
Authors: Isnaeni W , Rudyatmi E , Ridlo S , Ingesti S , Adiani L R 
Published: June 2021

Abstract
This study aims to facilitate high school students’ communication skills and critical thinking ability with ICT-oriented problem-based online learning and assessment instrument with HOTS criteria. This research approach is pre-experimental, with the one group pre-test- post-test design. This study involved 36 students of XI MIPA 4 and biology teacher at a high school in Jepara, Indonesia. The number of samples determined using the purposive sampling technique. The data collected includes data on students’ critical thinking skills, students’ communication skills, implementation of the learning process, teacher and student response data regarding teaching materials, and the learning process. Data of critical thinking skills were analyzed using the n-gain test. Other data were analyzed descriptively qualitatively. The results showed that students achieved a critical thinking skill level with N-Gain 0.31 (medium category) and communication skills 83.00 (very good category). The average score of the implementation of the learning process is in a good category, meaning that all syntax is carried out well. Teachers and students consider that ICT-based teaching materials are quite practical to use. According to them, the learning process is in a good category (positive). Conclusion: students’ critical thinking skills and communication skills can be facilitated through online learning with ICT-oriented PBL approach teaching materials and ICT-oriented HOTS assessment instruments.
Development of integrated teaching materials vibration, wave and sound with ethnoscience of bundengan for optimization of students’ scientific literation
Authors: Rusilowatil A , Sundari  , Marwoto P 
Published: June 2021

Abstract
The purpose of this study is to develop natural science teaching materials that integrate ethnoscience Bundengan in the Vibration, Wave and Sound material for the Central Java region. The specific purposes are describe the characteristics of the teaching materials developed, test their validity, level of readability and effectiveness in increasing students’ scientific literacy. This development research uses the Borg & Gall development model, starting with the needs analysis, the development of teaching materials, the validity test and the readability of the teaching materials that have been developed, as well as the effectiveness of teaching materials. Validation is carried out by experts in the field of study (lecturer) and practitioners (science teacher). The subject of the reading test of textbooks and effectiveness was junior high school students in Wonosobo Regency. Test the readability of the book using the overlap test (cloze test). Data analysis techniques using percentages, normalized gain, and t test. The validity of the teaching materials for Vibration, Waves and Sounds integrated with ethnoscience Bundengan are very valid both in content, presentation and language. This teaching material is also able to increase students’ scientific literacy higher than other teaching materials.
An analysis of critical thinking skill and interpersonal intelligence in the development of ethnoscience-based teaching material salt production
Authors: Sarwi S , Nisa G , Subali B 
Published: June 2021

Abstract
The environment can act as a source of learning for elementary school students. Environmental-based science learning is really important in building the basic concepts of science. Teaching material development for learning resources is rarely carried out by teachers. The objective of this research was to analyze the use of salt ethnoscience-based teaching material on students’ critical thinking skills and interpersonal intelligence. The research method used was a mixed method with a concurrent embedded research design. This research was conducted in two public elementary schools in Demak Regency, Central Java, Indonesia. The sample in this research amounted to 96 sixth-grade students. Data collection techniques used were tests and questionnaires. The research results showed that the use of salt ethnoscience-based teaching material had an effect on critical thinking skills with an N gain of 0.64 at moderate interpretation. The critical thinking skill showed a positive correlation with students’ interpersonal intelligence with r = 0.657 (moderate). It can be concluded that the implementation of ethnoscience-based teaching material is effective for improving critical thinking skills and interpersonal intelligence.
The Effectiveness of Content and Language Integrated Learning (CLIL) Online Assisted by Virtual Laboratory on Students’ Science Process Skills in Acid-Base Materials
Authors: Firmayanto R , Heliawati L , Rubini B 
Published: June 2021

Abstract
This study aims to examine the effectiveness of Integrated Content and Language Learning (CLIL) online assisted by virtual laboratory on students’ science process skills. The science process skills studied include the process of observing, classifying, communicating, measuring, predicting and inferring. This experimental research was conducted on students at Cahaya Rancamaya High School who used English as the medium of instruction in science learning. Student selection is done by purposive sampling. Data is collected through tests of science process skills. The results of the N-gain percentage analysis are 62% and in the medium category. The results show that CLIL online assisted by virtual laboratory is effective in improving students’ science process skills in acid-base material.
Correlation between student perception of learning model to learning outcomes in instructional methodology course at Universitas Negeri Padang
Authors: Yogica R , Lufri  , Fitri R , Muttaqiin A 
Published: June 2021

AbstractEducation for adults is different from education in secondary schools. The role of the lecturer is not only as a provider of teaching material, but as a learning facilitator. Thus, the basic assumption in adult education is that students have studied or at least have basic knowledge before attending lectures. Based on their basic knowledge, a psychological response appears within them, namely a perception of what will be followed during the lecture process. In the Department of Biology, Padang State University, we have implemented a model that we have developed, this model is a modified jigsaw learning model. Students’ perceptions are formed towards this model during lectures. We have calculated using a questionnaire about students’ perceptions of the learning model, and also count the correlation between this model and their learning outcomes (LO). We collect data using questionnaires and exam questions. The conclusion from our observations is the correlation value between students’ perceptions and their learning scores.
How to organize learning that supports the mastery of collaborative problem solving skills
Authors: Harjito K , Hardyanto W , Wardhani S , Sumarni W 
Published: June 2021

Abstract
One of the important competencies for teachers to master is the skills to organize 21st century learning and assessment (Assessment and Teaching of 21st skill/ATC21S). One of the learning models recommended so that h = teachers have these skills is the collaborative problem solving model (CPS). Learning the CPS model can be done face-to-face or online. Students learn in pairs or in small groups collectively to solve the problems presented. There are at least two domains involved in learning activities, namely social prayer and cognitive domains. Assessment based on activities is based on a context of problems that can only be solved if students have cognitive mastery and require interaction with other people. To measure the results of CPS, various data can be used such as video recordings, conversation recordings, log data, tests, interviews and self-efficacy.
The increase of students’ critical thinking abilities on optical instrument topic through pbl-stem with virtual simulation media
Authors: Parno  , Fauziyah S , Pramono N A , Anggraini R T , Hidayat A , Supriana E , Ali M 
Published: June 2021

Abstract
The optical instrument topic is considered difficult because of its abstract nature, and it involves mathematics so that it resulted in the low critical thinking abilities (CTA) on students. However, the implementation of PBL-STEM with VSM learning to engage CTA is still limited. This research aims to develop students’ CTA through PBL-STEM with VSM learning in the optical instrument topic. The subjects of this quasi-experimental with static-group pretest-posttest design are 78 number of grade XI students at a senior high school in Malang, Indonesia. The research uses the Critical Thinking Abilities Test with the alpha Cronbach reliability of 0.74. Data analysis was done with the Kruskal-Wallis test, ANCOVA, N-gain, and effect size. The results showed that in improving CTA, PBL-STEM with VSM class students are better than PBL and conventional classes, and PBL class’ students are better than conventional classes. The conventional class only learns with the usual way of learning every day. PBL-STEM with VSM class has higher N-gain than PBL class, and PBL class has higher N-gain than conventional class. For a practical effect on increasing CTA, the PBL-STEM with VSM and PBL pairs had a medium effect, the PBL-STEM with VSM and Conventional pairs had a large effect, and the PBL and conventional pairs had a small effect.
The effectiveness of google classroom as a tool to support online science learning: a literature review
Authors: Widiyatmoko A 
Published: June 2021

Abstract
The purpose of this article was to investigate the effectiveness of Google Classroom as a tool for support online science learning during pandemic COVID-19 in Indonesia. One of the impacts caused by COVID-19 in the education field is the implementation of online learning in all subjects, including science learning. This condition causes many teachers to use tools for online learning. Google Classroom is one of several tools to support online learning. Based on the literature review, this tool can manage class schedules, provide online and offline communication, share files, create and organize assignments, and provide feedback efficiently. This article also outlines the advantages and disadvantages when organizing online learning using Google Classroom, particularly in science learning.
Do the critical thinking skills perform well? A Survey on Preservice Science Teachers
Authors: Siswanto S , Hartono H , Subali B , Masturi M , Haryati S , Sukarno S 
Published: June 2021

Abstract
Critical thinking skills are a pivotal domain for students to have in today’s era. The learning process therefore must be able to train it. In order to train it by the learning process, its very important to be mapped. This study aims to investigate how level of students’ critical thinking skills of preservice science teachers. A survey method was conducted. The Cornel Critical Thinking Skill Test-Level X instruments used to measure the aspects of induction, deduction, observation and credibility, and assumption. The participants of this study were 106 science teacher candidates. The analysis was carried out by grouping students into five levels of critical thinking skills, namely level 1 (very low), level 2 (low), level 3 (sufficient), level 4 (high), and level 5 (very high). The results show that the generally are in the level 2 (low category). For the induction, deduction, observation and credibility aspects are in the level 2 (low category), while the assumption aspects are in the level 1 (very low category). This shows that critical thinking skills need to be trained in students. The learning process carried out must be able to facilitate students to have critical thinking skills.
Development of a critical thinking skill instrument for physics and chemistry students in higher education
Authors: Dwijananti P , Ruwaida A , Mindyarto B N , Wiyanto  
Published: June 2021

Abstract
Critical thinking skill is one of the essential skills needed in the 21st century. Besides being improved through a learning process, critical thinking skill also can be acquired through the evaluation. This study aims to determine the validity and reliability of a critical thinking skill instrument. The research method used is Research and Development (R&D) with the ADDIE model and a quantitative descriptive analysis. The participant of the study are fifty 2nd semester students majoring in Physics and Chemistry. This test consists of sixteen reasoned multiple-choice items. The data are collected by using test and questionnaire. Expert validation shows that this instrument is well categorized with a percentage of 90%. This result shows that the instrument is reliable with a reliability of 0.71. The implementation shows that students’ critical thinking skill is low with a score 10.1 out of 64.
Smoking fish in Banggi Village in learning of respiration system based on sustainable development
Authors: Hartadiyati E , Nurdianawati S , Wiyanto  , Rusilowati A , Ngabekti S 
Published: June 2021

Abstract
Sustainable Development in general is a human effort to improve the quality of life while trying not to go beyond the ecosystem that supports life. The smoking of fish in Banggi Village still creates smoke which can interfere with breathing for smoked fish craftsmen and the surrounding community. This study aims to determine the results of using fish smoking in Banggi village in learning the respiratory system to improve students’ problem solving abilities. This study used sample of two classes. One class there were a number of students who received Sustainable Development based learning and one other class did not get this treatment. The research instrument was in the form of problem solving ability test items. The results N gain on problem solving abilities in the class with Sustainable Development based learning activities are moderate category, while the class with not Sustainable Development based learning activities was low category. The posttest scores of the two classes are obtained by Sig. (2-tailed) of 0.000 <0.05. The conclusion of this study is that the use of smoking fish in Banggi village in learning the respiration system based on Sustainable Development can significantly (p<0,05) improve students’ problem solving abilities.
Development of e-learning-based evalution tools for learning energy sources in elementary schools
Authors: Riyanti  , Susilaningsih E , Putra N M D 
Published: June 2021

Abstract
This study aims to develop an e-learning-based evaluation tool to assist teachers and students in distance learning activities about energy sources in elementary schools. Preliminaries conducted by researchers in ten elementary schools in Cirebon Regency show that teachers find it difficult to evaluate students so that the results obtained have not reached 75% complete classical. The type of used research is research and development (R&D) with a 4-D model consisting of 4 stages, namely define, design, development, and dissemination. This study used a group pretest-posttest design. The research subjects were 58 students of SD Negeri 3 Panembahan Cirebon Regency. The data collection instruments were carried out with interview sheets, tests and questionnaires. Quantitative data analysis techniques with parametric statistics, t-test one sample spss, Z proportion test. The results showed that the e-learning based evaluation tool using hosting and the developed domain was feasible, namely 3.82 with an average total score of 4.00 very valid category. Teacher response obtained 97.14% (very good). Student response obtained 98.42% (very good). Students experience classical completeness by 89%. It can be concluded that the use of e-learning based evaluation tools is a solution to the faced problems by teachers and students today as an alternative in assisting the implementation of distance learning.
Identification misconceptions using Movement and Circulatory System Diagnostic Test (MCSD-Test) in XI class SMA/MA in East Java
Authors: Rohmadhani I A N , Susilo H , Lestari U 
Published: June 2021

Abstract
Movement and circulatory system discusses biological phenomena that occur in the body. Both materials are classified as abstract because they cannot be observed directly. Abstract material will apply to students. Difficulty understanding concepts can lead to misconceptions. Misconceptions can hinder students from constructing scientific concepts so that they can hinder the learning process. This is what makes misconception messages important. This study used a diagnostic test for the movement and circulatory systems to identify misconceptions. Each question on this test consists of three levels. One of the three-tier instruments can differentiate between students who lack knowledge and those experiencing misconceptions. This research was conducted in 4 regions in East Java Province, namely Lamongan Regency, Kediri Regency, Trenggalek Regency and Malang City. The research sample was 669 class XI students who were taken from 12 schools in 4 regions. The results showed that students who experienced misconceptions on the material of the movement system were 17,05% and the circulatory system was 31,38%. Factors are causing student misconceptions, especially because the teaching materials used by students have misconceptions. Suggestions for further research are (a) to examine misconceptions on other biological materials (b) to further analyze the causes of misconceptions, and (c) to identify misconceptions of the Biology teacher.
The online assessment in education course
Authors: Adri H T , Suwarjono  , Sesrita A , Sudjani D H 
Published: June 2021

Abstract
This research is a development research with the development method from Borg & Gall. This study aims to develop an online assessment program that can measure students’ mastery of concepts in science education subject matter learning. The research was conducted at a university in Bogor, West Java, Indonesia. The purpose of this study was to determine the steps for developing an online assessment program in science education courses. This program testing analysis is only carried out until the program validity testing stage by experts and students as users. Data obtained through expert validation tests and questionnaires given to students as users. The results showed that the program developed had very good criteria so that it could be used as a tool for assessing science learning for students.
Integrated waste management system in Universitas Negeri Semarang, Indonesia
Authors: Fathoni K , Utomo A P Y , Prasetiyo B , Retnoningsih A 
Published: June 2021

Abstract
Waste has become a global problem worldwide. Universitas Negeri Semarang (UNNES) also cannot avoid this problem. Therefore, UNNES has included the sustainable waste management system in its long-term target. However, this target will not be achieved if UNNES does not take any real action. Starting this year, UNNES begin to operate integrated, independent, and sustainable waste processing to replace conventional waste processing, which only piled up the waste in the city landfill. This paper aims to describe this new waste management system of UNNES comprehensively. The study found that the system can effectively handle up to 5 tons of various waste that UNNES produces a day. The waste was sorted and classified into four categories, and different treatments processed it. Leaves and food waste were recycled into compost and black soldier fly (BSF) maggots, respectively. While plastic, bottle, and paper waste were distributed to the third party, they managed the waste. Finally, the rest of the unsegregated waste (e.g., twigs or branches, glass fraction, unrecyclable plastic) were turned into the ashes by an eco-friendly incinerator.