Critical Thinking Skills and Scientific Attitudes of Pre-Service Chemistry Teachers Through the Implementation of Problem-Based Learning Model

This study aims to determine the effect of applying problem-based learning models on critical thinking skills and scientific attitudes of pre-service chemistry teachers in Basic Chemistry 1. This quasi-experimental research uses pre-test and post-test through an unequal control group design. This research has been carried out for 3 months from September-November in 2021 on pre-service chemistry teachers. The data were analyzed using Hotelling's T2 test and the Rasch model. Empirical evidence shows that based on Hotelling's T2 test results obtained a significance value of 0.001 < (0.05) with a partial eta squared value of 0.28 which means Ha is accepted. So, it can be concluded that there is a contribution of problem-based learning models on critical thinking skills and scientific attitudes of students with the contribution of 28%. Another finding also shows that based on the results of the Rasch model test, it shows that in the experimental class the indicators of critical thinking skills and scientific attitudes are mostly possessed the ability to synthesize attitudes towards scientific investigations. The indicators of critical thinking skills and scientific attitudes are least possessed the ability to analyze and chemistry learning experiences. The conclusions of this study include there is a significant effect of the application of the PBL model on students' critical thinking skills and scientific attitudes with a model contribution of 28%, as well as critical thinking skills and scientific attitudes that most students have in the experimental class are analytical skills and attitudes towards scientific investigations.

Development of Audiovisual-Based PowToon Animation Video on Chemical Bonds for Tenth Grade

This research aimed to develop an audiovisual-based PowToon animation video on the subject matter of chemical bonds and analyze the quality of the audiovisual-based animated video as learning media to study chemical bonds based on the assessment of material experts, media experts, chemistry teachers, and students’ responses. This research used development research methods (R&D) with a 4D development model (Define, Design, Development, and Dissemination). However, the 4D development model was limited to the dissemination stage in this research. The product is an animated video, which is in the form of mp4, containing chemical bond materials. Based on product quality assessment by a material expert, it gained a percentage of 84.375% with very good (VG) category; from the media expert’s assessment, it obtained a percentage of 96.428% with very good (VG) category; and according to assessment by chemistry teachers of high school, it got a percentage of 98.48% in the very good (VG) category. The product was responded to positively by students with a percentage of 95%. Based on the results of assessments, the animated video can be used as an alternative media for the chemistry learning process in the classroom

Development of 5-E Learning Cycle-Based Simple Chemistry Practicum Guideline Module for Eleventh Grade

The chemistry practicum activity in school is impossible due to the COVID-19 pandemic, whereas practicum is very important to train soft skills and understanding of chemistry materials. This research aimed to develop 5-e learning cycle-based simple chemistry practicum guideline module for students of class XI. The development model used was a 4-D development model. The quality of the product was assessed by one material expert, one media expert, five reviewers (chemistry teachers of high school), and responded by ten students of high school. The instruments used in the research were product quality assessment sheets using a Likert scale and student response sheets, in the form of a questionnaire, using the Guttman scale. The characteristics of the developed practicum module were in the form of a practicum module for hydrocarbons, thermochemistry, reaction rates, and chemical equilibrium, using simple tools and chemicals; being combined with the 5-e learning cycle model. The quality assessment on the practicum module, which was carried out by one material expert, media experts, and reviewers, gained 88.89. 95.83. and 94.00%. All assessments got a score with Very Good score. From these results, it can be concluded that the developed product is feasible to be used as a practicum guideline.

ANALISIS PROSES PEMBELAJARAN DAN INTEGRASI PENGETAHUAN COVID 19 DALAM SATUAN PENDIDIKAN

ABSTRACTThe research aims to find out information about the learning system applied during the COVID-19 pandemic, information related to the efforts made by education units in Aceh Barat Daya in implementing the policies of the central government and local governments during the learning period of the pandemic and knowing the integration of education related to the COVID-19 pandemic in the school curriculum. The research method is quantitative with data collection techniques through questionnaires. Furthermore, the data was analyzed and based on the results obtained showed that the learning systems that were generally applied during the pandemic were blended, offline and online learning. Practical learning aktivities during the COVID-19 pandemic are generally carried out online and offline. Semester exams are generally conducted online. Face-to-face learning is carried out through the division of study groups, while online learning is carried out by utilizing learning applications. Obstacles in implementing learning during the pandemic include difficulties for teachers to monitor the behavior and character of students, students find it difficult to understand learning materials and also limited quotas. The education unit at ABDYA has tried to implement the policies of the central government and local governments while carrying out learning during the pandemic. This can be observed from the efforts of the school in implementing health protocols during learning during the pandemic. In addition, the school also provides free health facilities and infrastructure to school residents. Internet quotas are also provided to overcome the constraints of limited quotas during learning during the pandemic. Education related to the dangers of coronavirus is carried out by the school in various ways, both by socializing the dangers of covid in the school and by teaching teachers to model COVID-19 prevention behavior. Education is also carried out by making disinfectants independently and through social media. Most chemistry teachers consider that COVID-19 education can be inserted into certain sub-learning materials, one of which is through the manufacture of disinfectants and sanitizers independently. Meanwhile, other chemistry teachers argue that teachers can insert covid-19 education in all learning materialsKey words: Learning process, Curriculum integration , Covid-19

STEAM Project-Based Learning Activities at the Science Museum as an Effective Training for Future Chemistry Teachers

Non-formal learning environments, such as science museums, have a fundamental role in science education and high potentialities as ideal contexts for science teachers’ training. These aspects have been analyzed and reported in several recent works mainly focused on students’ perception of science and increased engagement towards scientific disciplines. In this work, a project-based learning methodology optimized and experimented in the frame of a pre-service chemistry teachers’ course at the University of Pisa (Italy), during the last eight years, involving in total 171 participants, is presented. This educational project has several distinctive features related to the STEAM philosophy, with a high level of multi-disciplinarity and creativity. Most of the laboratories and chemistry-centered activities were conceived, planned and carried out by the future chemistry teachers in non-formal contexts, such as science museums. A case study based on a series of non-formal laboratories designed by a group of students during their training in the academic year 2018–2019 and performed in a science museum is reported and examined in details. In this paper, all steps of the STEAM project-based learning methodology are described underlining the main learning outcomes and cognitive levels involved in each step and the relevant methodologies proposed during the training course and adopted in the project. The effectiveness of this pre-service teachers’ training methodology is finally discussed in terms of participants’ motivation and interest towards the course’s content, students’ final judgment of their training experiences and, in particular, of the STEAM project-based learning activities. From the students’ feedbacks and final assessment, the role of the non-formal context in teaching and learning chemistry and the efficacy of developing educational activities related to current and real-life chemistry-centered topics emerged as very positive aspects of the proposed approach.

Views of Prospective Chemistry Teachers on the Use of Graphic Organizers Supported with Interactive PowerPoint Presentation Technology in Teaching Electrochemistry Concepts

The purpose of this study is to evaluate the views and experiences of the prospective chemistry teachers (PCTs) about the use of graphic organizers (GOs) supported with interactive PowerPoint presentation technology in teaching electrochemistry concepts. Ten GOs were developed and a pair of slides for all of them which contains partial and complete versions of the GOs was constructed. Participants of this study consisted of two different study groups. The preliminary trial of the study was carried out with four senior PCTs who have previously taken both an Electrochemistry course and an elective course concerning graphic organizers. Data from the first group of the study were collected by semi-structured interview and the experiences of the first group regarding the difficulties experienced during traditional electrochemistry teaching (didactic lecture) were examined. The second study group was eight PCTs who were in the fifth semester and were taking the Electrochemistry course while the study was being undertaken. In the last three weeks of the Electrochemistry course in the second study group, the course was taught with GOs supported with interactive PowerPoint presentation technology, and then the views of them were taken by a written opinion form. At the end of the study, three themes emerged regarding the experiences of the PCTs for the traditionally taught electrochemistry course. These are "difficulties", "inadequacy", and "not being beneficial". It was also concluded that the PCTs thought that the use of GOs supported with interactive PowerPoint presentation technology in teaching electrochemistry could enhance the comprehension and motivation of students.

Examining the Content Validity of Android-Based Augmented Reality Media for Chemical Bonding using Rasch Model

21st-century learning presents chemistry teachers with new challenges in teaching abstract chemistry concepts with various technologies that continue to develop. One of the media that can visualize abstract chemical concepts is Augmented Reality (AR). AR media developed in chemistry learning needs to be valid so that it can be used properly. Therefore, this study aims to examine the validity of the Android-based AR media developed. Four education practitioners carried out the validation as experts, and 13 students participated as respondents. The instrument used is a questionnaire with a Likert scale. The data obtained were analyzed quantitatively with the Rasch model using the facet software. The results of the analysis show that the Exact Agreements are 41.10%, and the Expected Agreements are 42.20%. The most challenging aspect to achieve is media design, while profit is the most easily agreed-upon aspect. Based on this assessment, in the development of augmented reality media, it is necessary to pay attention to display aspects and 3D objects suitable for viewing a material so that it is easier for users to understand the material.