Misconceptions can prevent students from mastering the material more deeply. This is because misconceptions can hinder the process of receiving and integrating knowledge. Therefore, the teacher must identify the misconceptions that occur in students. This study was conducted to identify misconceptions about thermochemistry using a three-tier diagnostic test for students at senior high school with a total of 33 students. The research design used is descriptive research. The research subjects were determined by purposive sampling technique. Data collection used was three-tier multiple choice diagnostic test and interview. Data was analyzed using descriptive statistics with percentages and criteria for misconceptions. The results showed that 16.72% of students understood the content, 36.36% had misconceptions, guessed 18.54% and 28.27% did not understand the concept. Through this finding, in the hope that teachers could analyze the causes of students' misconceptions, and find appropriate learning methods and media to reduce misconceptions occurred.

The purpose of this study was to analyze the effectiveness of the implementation of online learning for FTK UNIKS students during the Covid-19 Pandemic. This research is a combination of qualitative and quantitative research (Mixed Methods). Data and information were collected through a questionnaire (questionnaire). The population in this study were students of the Faculty of Tarbiyah and Teacher Training (FTK) semester 2, 4 and 6 of the 2021/2022 academic year, totaling 216 students and a sample of 79 students obtained from students who filled out a questionnaire randomly. Data were analyzed descriptively from questionnaires by compiling distribution tables and displaying data in the form of diagrams. Data analysis techniques used Milles and Huberman's. The results of the study show that In general, the implementation of online learning for UNIKS FTK students during the Covid-19 pandemic was quite effective with a percentage of 60-79%. The results of the questionnaire on the implementation of online learning for FTK UNIKS students who have less effectiveness with 55% effectiveness are in practical activities.

Learning Management System or also called LMS as it is also known, can be considered as a type of online content management or online content delivery platform. It is used to deliver training and educational materials to the workforce or external users via the Internet. Based on that, this article aims to identify and analyze publications about online learning or online learning (in networks) with research data taken from journal articles starting in 2018-2022 as many as 124 articles from both national and international journals. The stages of data analysis consisted of searching journals through Google Scholar and also through the Mendeley application, checking the completeness of articles, mapping articles, conducting Literature Review analysis in addition to seeing the mapping and relationships between articles and seeing their distribution with bibliometric analysis with VOSviewer and making conclusions. Research on the development of the Learning Management System (LMS) Publication in 2018-2022 experienced significant developments in 2021 where the Covid pandemic occurred in early 2020 and the use of LMS was mostly dominated by universities or higher levels education. Where the university has preparedness in various aspects including human resources, qualified facilities and technology users are students who understand technology.