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All Journal Journal of Educational Chemistry (JEC) Journal of Disruptive Learning Innovation (JODLI)
Septiani, Maya Oki
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Chemistry Education

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Development of Triple Representation Based on Virtual Lab Media on The Chemical Equilibrium Experiment in Online Learning Era Rokhim, Deni Ainur; Septiani, Maya Oki
Journal of Educational Chemistry (JEC) Vol 3, No 2 (2021)
Publisher : Chemistry Education Department

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Abstract

The implementation of chemistry practicum generally has several obstacles such as the lack of tools and materials as well as limited time and space causing students to have less understanding of the procedures and concepts learned in the practicum. This problem can be solved by utilizing a media called virtual lab which helps students prepare practicum activities independently. Virtual labs have the advantage of being able to provide performance to students in doing practical work in real laboratories, especially in chemistry learning process. This media can be improved in quality by integrating the triplet representation aspect which consists of three aspects, namely the macroscopic aspect (practicum technical skills), the submicroscopic aspect (the particulate level), and the symbolic aspect (interpreting data through the form of reaction equations or symbols based on observations). The purpose of developing this media is to produce a virtual lab media to support laboratory-based learning with the features mentioned above to make students become scientists with comprehensive understanding competencies and laboratory engineering skills. The virtual lab media product developed by using the Lee Owens development method which consists of five stages, namely assessment / analysis, design, development, implementation, and evaluation results in the results that the virtual lab based on triplet representations on chemical equilibrium material fulfills very feasible criteria to be used as a learning resource for students. The percentage of product eligibility as a learning media is 86.15% and in terms of material it is 85.71%. The results of small group trials in class XI students of SMAN 3 Sidoarjo showed that the virtual lab developed had met the very feasible criteria with an average percentage of 86.40%. The final result of this virtual lab has been revised based on comments and suggestions from validators and test subjects. Practically, the media that has been developed is very useful to support practicum learning
Identification of Teachers' Practices and Their Barriers In Chemical Cognitive Assessment During The Early Pandemic of Covid-19 Rokhim, Deni Ainur; Widarti, Hayuni Retno; Septiani, Maya Oki; Dzikrulloh, Muhammad Hilfi Azra
Journal of Disruptive Learning Innovation (JODLI) Vol 4, No 2 (2023)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um072v4i22023p63-78

Abstract

The occurrence of the Covid-19 pandemic affected the implementation of education, where learning which was originally carried out face-to-face in the classroom, now has to turn into an online system. Limited communication between students and teachers, limited time allocation, lack of facilities and internet access are obstacles that cause teaching and learning activities cannot be carried out optimally. Learning during the pandemic also raises various problems that hinder assessment activities. Therefore, the authors conducted a study that aimed to analyze teacher practices and barriers in chemical cognitive assessment during the Covid-19 pandemic. This study uses a qualitative descriptive research method with 4 stages of research, namely preparation, data collection, data analysis, and drawing conclusions. The research subjects included 85 chemistry teachers from various districts/cities throughout East Java Province. Subject selection was carried out using criterion-based selection and sample determination using cluster sampling technique. Data were analyzed using descriptive statistical techniques. The instrument used consisted of an open and closed questionnaire via the Google Form platform. The results of the study show that learning during the pandemic creates various obstacles to cognitive assessment activities in chemistry subjects. The instrument used consisted of an open and closed questionnaire via the Google Form platform. The results of the study show that learning during the pandemic creates various obstacles to cognitive assessment activities in chemistry subjects. The instrument used consisted of an open and closed questionnaire via the Google Form platform. The results of the study show that learning during the pandemic creates various obstacles to cognitive assessment activities in chemistry subjects. Obstacles in these assessment activities include the difficulty of fulfilling accurate and valid aspects and the similarity of answers between students. In addition, the lack of motivation to learn and barriers to internet access also trigger delays in assessment activities during the distance learning period
Co-Authors Deni Ainur Rokhim Dzikrulloh, Muhammad Hilfi Azra Hayuni Retno Widarti