Abstract. This study aims to determine the use of inquiry-based learning model laboratory to

This research aimed to develop a valid interactive e-book using Learning Content Development System (LCDS) with scientific approach on energy resources to enhance student’s critical thinking ability, to know readability and the ease of operating the developed e-book. The method used is research and development. The implementation of procedures adopted from Sugiyono’s design which consisted of 7 adjusted steps that were potency and problem assessment, data collecting, developing preliminary form of product, expert validation, design revision, one-on-one test, and product revision. Developed e-book contains pictures, animations, simulations, learning video, essay question, and interactive test. The e-book has been validated in content and design with results “very appropriate” in quality and “proper to use” as the recommendation for students in learning energy resource topic with scientific approach to foster critical thinking ability. One-on-one test’s results show that e-book is very easy to operate with score 3,68 and has very good readability with score 3,60.

One of the causes of the low critical thinking skills of participants is caused by the learning process that focuses on mastering concepts alone without involving students to construct knowledge independently. Less comprehensive learning tools are the main obstacles that are often encountered in the implementation of learning. Project based learning is a constructivist method that is able to involve students to construct knowledge empirically, one of which is by utilizing the content of ethnoscience as a contextual approach in project learning. This study aims to develop a quality ethnoscience-based Project based learning devices in terms of content validity and empirical validity. This study uses the research and development method with the ADDIE model. The research was conducted at SMA Negeri 1 Gandapura. The research instrument used a validation sheet, student response questionnaires and teacher response questionnaires. Data analysis used the Aiken V coefficient for critical thinking skills test questions; Interclass correlation coefficient for lesson plans, Student Worksheets and Handouts; percentage formula for teacher and student response questionnaires. The results showed that the ethnoscience-based Project based learning devices were categorized as very feasible and could improve the critical thinking skills of students with an N-gain of 0.88 which was classified as high, and received a positive response from the teacher with a percentage of 96.71% and students by 86.35%

Indonesia is faced with an outbreak of the COVID-19 virus in early 2020. The COVID-19 pandemik has an impact on Indonesia, especially for the world of education, where the learning process is transferred to the online learning system (online) and remains at home to take part in the learning process. One of the learning models used for the learning process is the blended learning model. This study is designed to reveal the effect of the blended learning model on students' economic learning motivation and the effect of the blended learning model on the COVID-19 pandemik. This study was conducted using a phenomological method with a qualitative approach. The population in this study took proportional random sampling of information so that 16 informants were obtained consisting of 5 students (i) at the Makassar State University (UNM), 5 high school students (SMA) scattered in several cities, and 6 students from Junior High Schools (SMP) from several cities. Data collection techniques used in this study were online interviews via the WhatsApp application with several questions and data analysis techniques used to assist this study were coding techniques. Based on the research results, it can be seen that (1) the blended learning model has a positive effect on economic learning motivation in students (2) the blended learning model has a positive effect on the COVID-19 pandemik period.