The study aims to analyze the worthiness, the effectiveness, and the practical science e-module flipbook-based as the learning material to improve students’ learning motivation in light topic and its benefits for life. The writer decided to develop teaching material to support online class such as e-module flipbook-based. This study is research and development (R&D) using ADDIE model. This study used Likert Scale with particular interval as data analysis technique. To know the worthiness of the data, the writer used validation sheets which had been validated by e-module expert and material expert and its result is categorized as worthy. Then, the effectiveness of the data used motivation questionnaires which are given before and after the learning process. The practical level had been done from the questionnaire of students and teachers’ response. The results of this study showed that e-module can be categorized as worthy, effective, and practical to use. Therefore, it can be concluded that the development of e-module flipbook-based to improve students’ learning motivation achieves the expected objectives and help the teachers as a reference in developing an interesting learning material for students to improve their learning motivation when they do online class.

This study aims to produce e-modules for learning natural sciences for junior high schools to improve basic science process skills, determine the feasibility of e-modules, student responses to e-modules, and the effectiveness of the developed e-modules. This type of research is research and development that uses ADDIE development procedures (analysis, design, development, implementation, and evaluations). The number of research subjects was 22 students in class IX B, 20 students in class VIII B and 19 students in class VIII A. Data analysis used qualitative and quantitative descriptive methods. The types of instruments used are e-module validation sheets, question validation sheets, student questionnaires, and pretest and posttest questions. The results of the e-module development are based on the evaluation of the quality of the e-module by media & material experts, which is 0.89 with a valid category. Student responses to e-modules are categorized as very positive with a percentage of 92.71%. The effectiveness of the e-module is categorized as moderate with an N-gain value of 0.49. The conclusion of this study is that the e-module of natural science learning in junior high school to improve basic science process skills is effectively used in learning.

This research is motivated by the fact that the learning of natural science in general has not been related to contextual learning resources. One of the learning resources in the form of integrated natural science teaching materials is still not connected to the wetlands or local wisdom of the local community. Therefore, a local wisdom based integrated science teaching material development study was carried out on wetlands using the guided inquiry model. This study aims to determine the validity, practicality, effectiveness of teaching materials, and skills of science process of students. Included in the type of research and development using the Tessmer model. Students of class VII-E of SMP Negeri 15 Banjarmasin as a trial subject. Data is generated through sheets from validators, questionnaire responses from students, learning outcomes, and observation sheets of students' scientific process skills. Data were analyzed by quantitative and qualitative descriptive. The results of the study show that: (1) the validity of teaching materials is valid, (2) the practicality of teaching materials has practical criteria, (3) the effectiveness of teaching materials is effective, and (4) the science process skills of students are very good. Based on the results of the study, it was concluded that the integrated science based learning material based on local wisdom in wetlands using the guided inquiry model in junior high school was appropriate for use during the learning process.

The modern era as now the needs of electricity is enormous. This makes the supply of non-renewable resources dwindling (coal and natural gas). This makes the emergence of smart ideas and innovations by using alternative energy. By using alternative energy we can save the use of non-renewable resources and can create energy efficient environmentally friendly. This study aims to analyze the output power in DC motors by using variations in the number and diameters of the outer coils in order to produce maximum output power value. The research method used is the design and manufacture of tools and experiments by conducting a descriptive research approach. The results of the test using different diameter variations of wire are 0.15 mm, 0.20 mm and 0.25 mm. The voltage test obtained voltage of 0.40 V for wire diameter 0.15 mm, 0.46 V for wire diameter 0.20 mm, and 0.52 V for 0.25 mm wire diameter. Simultaneous current and voltage gain can further improve the efficiency.