Modul Elektronik Berbasis Pendekatan Saintifik pada Materi Ikatan Kimia

The role of technology in education is at the forefront of developing innovative teaching materials that may facilitate students' learning needs. The purpose of this research was to determine the procedure for developing an electronic module based on a scientific approach for the chemical bonding topic, as well as to determine whether the developed media is theoretically and practically feasible. This electronic module was designed with students with visual learning styles in mind, and the topics are presented in a scientific manner. The methods were implemented using the Lee and Owens model, which required several steps such as analysis, design, development, implementation, and evaluation. The results showed that the electronic module was deemed feasible as a digital teaching material by expert judges. Based on practitioner testing during the learning process, this module was effective as a teaching material, as evidenced by 89.28 percent ("Excellent" category) students believing it was simple to understand the topic of chemical bonding.

Validitas Media Berbasis Android pada Materi Struktur dan Fungsi Asam Amino dan Protein

The COVID-19 pandemic has forced major changes in the world of education. The application of social distancing to learning from home makes educators must be more creative in learning. The use of appropriate media in learning is very important to overcome these problems. One of the media used is android-based learning media. This research is continuation research of android application design in the subject of structure and function of amino acids and proteins. This research is limited to media validation. The instrument validation test stated that the instrument was valid with rcount greater than rtable at the number of N = 34 and a significance value of 5%. The reliability test of the validation instrument shows the rcount value of 0.880 and is greater than rtable 0.339 at the number of N = 34 and a significance value of 5%. The score of the questionnaire instrument was 3,196 obtained by averaging the scores from each category. It is in the range of 2.9-3.4 with a high category so that it can be interpreted that the application can be used as a learning media of the structure and function of the molecule.

Penerapan Model React Terhadap Pemahaman Konsep Siswa Kelas XI SMA

This study aims to determine differences in conceptual understanding of students who are taught using the Relating, Experiencing, Applying, Cooperating, Transfering (REACT) model with students who are taught using conventional models and to describe the improvement in conceptual understanding of students in class XI SMA Kemala Bhayangkari on Acid Basa material. The form of research used was a quasi experimental design with a nonequivalent control group design research design. The population in this study were all students of class XI MIA SMA Kemala Bhayangkari Kubu Raya for the academic year 2019/2020, totaling 62 students. The sample selection technique was carried out by simple random sampling. The data collection technique used was a test of students' conceptual understanding. Data analysis used Shapiro-Wilk test, Levene statistic, U-Mann Whitney and N-Gain calculation. The results of data analysis using the U-Mann Whitney test obtained an asymp.sig (2-tailed) value of 0.208, which means that there are differences in conceptual understanding between students taught using the REACT model and students taught using conventional models.. Based on the N-Gain calculation, it is known that the REACT model can improve students' conceptual understanding by 0.42 in the moderate category.

Persepsi Mahasiswa terhadap Pembelajaran Daring Berbasis Video dengan Bantuan Pen Tablet Selama Pandemi Covid-19

Online learning requires students to be more independent in learning. For example, chemistry learning tends to contain abstract concepts (very theoretical), so it requires a more detailed description and explanation. To help solve this problem, we need a media that can make it easier for students to learn during online learning. The purpose of this study was to determine student perceptions or responses to learning using teaching videos. The method used in this research is descriptive quantitative, which will produce a description of quantitative data related to student perceptions of the results of the Cronbach Alfa test. The instruments in this study were questionnaires, and learning outcomes test questions. The sample consisted of 102 students. Before being used, video-based learning media with the help of a pen tablet were validated by media and material experts, both in terms of construction and concepts contained in the learning media. The validation results obtained an average value of 0.91 which means it is very valid. Further analysis using reliability showed the Cronbach Alfa coefficients were 0.88, respectively; 0.92; 0.93 consecutively for aspects of knowledge, media and convenience. In order to be accepted by the media as learning media, it is necessary to look at student responses to aspects of knowledge (P) where the average value is 3.96 which is classified as good, media (M) 4.02 and convenience (K) 3.81 are also included in good category.

Literasi Digital Calon Guru Sains di Universitas Islam pada Masa Pandemi Covid-19

The covid-19 pandemic has caused changes in learning patterns that lead to technology-based learning activities. Digital literacy in 21st century learning has become inseparable during a pandemic. The purpose of this study was to investigate the digital literacy of prospective science teachers at the Islamic University in Palembang during the Covid-19 pandemic with basic chemistry courses. This study uses a descriptive qualitative method by survey of 100 prospective science teachers in various science-based study programs such as chemistry, biology, and physics. The place of research was carried out at the Islamic University in Palembang. This study uses analysis consist of data reduction, data presentation and drawing conclusions. The results of the study show 1) understanding of digital literacy for science teacher candidates in obtaining 80% theoretical understanding, 30% use of social media, 72% use at home, and 30% use for communication. 2) the description of Belshaw's digital literacy elements is shown with cultural, cognitive, constructive, communicative, creative and critical dimensions in digital literacy. Research conclusions: 1) The theoretical understanding of digital literacy for science teacher candidates is good, mostly for social media, home use and communication. Belshaw's literacy element in digital literacy shows a change in learning patterns towards the digital era on the cultural dimension. Acceleration of access to knowledge on the cognitive dimension. Learning platform that supports the constructive dimension. Ease of communication on the communicative dimension. Constraints in formulating new findings on the creative and critical dimensions.

Penerapan Pembelajaran Berbasis Inquiry pada Materi Elektrokimia terhadap Pemahaman Konseptual, Model Mental dan Sikap Siswa

The purpose of this article review is to know the effect of applying inquiry-based learning on electrochemistry material to conceptual understanding, mental model and student attitudes. Based on some articles that have been reviewed, it can be concluded that the application of inquiry-based learning can improve conceptual understanding, mental model and positive attitude of students on electrochemistry material. The 5E inquiry (Engagement, Exploration, Explanation, Elaboration, and Evaluation) can be combined with the galvanic cell kit model to improve students' understanding of electrochemistry at the submicroscopic (molecular) level. Inquiry-based learning can be applied in both laboratory activities and classroom learning processes. The students' understanding of chemistry will be intact if students are able to connect the three levels of chemical representation.

Implementasi Rancangan Pembelajaran Berbasis Sharing dan Jumping Task pada Konsep Hukum Kekekalan Massa

The law of conservation of mass is a fundamental law and is related to other chemical materials such as chemical reaction equations so that student's learning obstacles of the law of conservation of mass must be overcome. One of the ways to overcome student's learning obstacles of the law of conservation of mass concept is the implementation of sharing and jumping task based lesson design, which is the aim of this research. The research method used is a qualitative descriptive research method. The research subjects were students of X.1 and X.2 SMA in Bandung and chemistry teacher who collaborate with researcher as team teaching. The data on the implementation of sharing and jumping task based lesson design of the law of conservation of mass was obtained from observations, tests, and interviews. Implementation of sharing and jumping task based lesson design of the law of conservation of mass concept was carried out twice. The result of the first implementation is that the previously identified learning obstacles still appear but in a smaller percentage. After the first implementation of the lesson design, it was revised and implemented in other class. The results of the second implementation can overcome student's learning obstacle who think that the mass of solids is heavier than the mass of liquids, but a small number of students still do not take into account the mass of gases in chemical reactions and do not fully understand the meaning of the law of conservation of mass.

INSTRUMEN TES HIGHER ORDER THINKING SKILL PADA MATERI KIMIA SMA

According to demands of curriculum 2013, assessment carried out on school should have led to increasing of higher order thinking skill. The lack of availability of questions are specifically designed to develop student’s higher order thinking skill causes students are not really proficient in solving higher order thinking skill questions. This study was research and development research purposing to determine development steps and quality of higher order thinking skill test instrument in one of high schools chemistry topic, i.e. colloid. The process of developing a higher order thinking skill test instrument used a formative research designed by Tessmer through 4 stages, namely: preliminary, self-evaluation, prototyping (expert reviews, one-to-one and small group) and field test. The data were obtained from the results of filling out validation sheets by expert reviews, questionnaires filled out by students, and test/trial of higher order thinking skill test instrument on students. The results of the development were categorically valid logically and empirically. The reliability of the test instrument was 0,65 with the high category. The item’s difficulty level was in the medium category. Six questions had good distinguishing power and one question had enough distinguishing power. The higher order thinking skill of students were in excellent, good, adequate, lacking and very poor categories respectively: 15,14%; 12,12%; 42,42%; 24,24%; 6,06%.

PROFIL KETERAMPILAN BERPIKIR KRITIS DAN KREATIF CALON GURU KIMIA PADA PERKULIAHAN BIOKIMIA

Critical thinking and creative thinking are important dimension in teaching of 21st century to facing the challenges of the industrial revolution 4.0. The aim of this research was to analyze undergraduate preservice teachers’ critical and creative thinking skills on a biochemistry course. It was conducted using case study to analyse real circumstance that happened in biochemistry course. The instruments was observation sheet, test items of critical thinking skills, test items of creative thinking skills and questionnaires were used to determine the responses students towards learning activity. Participant was 30 undergraduate preservice chemistry teachers in 2015. The finding of this research showed that biochemistry course only emphasizes on critical thinking skills and not provided briefing creative thinking skills. This means that the biochemistry course has not showed students’ balance skills on critical and creative thinking skills. This study suggest that need further research to develop a biochemistry program who can improve students’ critical thinking and creative thinking.

PENINGKATAN KEMAMPUAN KOGNITIF SISWA MELALUI PEMBELAJARAN ARIAS

The quality of education depends on competence of teachers in managing learning. Improving the quality of learning in class can improve the quality of education. Research conducted using classroom action research with qualitative descriptive approach thats aims to find out and describe the application of the ARIAS learning model in improving students' cognitive abilities. Subjects in the study were teachers and all students of class XI IPA 2 SMA Negeri 6 Palembang. The instruments used in the research were questionnaires, observation sheets, cognitive ability tests and documentation studies. Based on the treatment given by the teacher for three cycles, it was found that the average cognitive chemical ability of students in the first cycle was 69,66. In the second and third cycles, the average chemical cognitive abilities of students were 78,84 and 84.35. Meanwhile, the percentage of learning mastery obtained in the first, second and third cycles were 52,63%, 73,68%, and 86,84%. Based on the research and data analysis conducted, it is known that the ARIAS learning model can improve students' cognitive abilities. Besides that, it can develop students' self-confidence and enthusiasm in learning chemistry.