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The interesting learning media will help students to understand physics. Comic is one of the alternative learning media that can be used in the learning process. The using of comic has been used widely in the field of education. This research aimed to develop a work and energy comic based on Jambi folklore, Aminuddin and Aminullah, for senior high school students. The scenes of comic will be connected to the concepts of physics especially on the work and energy concepts. This study used research and development method referring to the ADDIE model which consisted 5 stages : Analyze, Design, Development, Implementation and Evaluate. The results of the students response and expert validation of comic showed that the comic is feasible to use in learning.

Conceptual understanding is one of the important things in physics learning. Many factors affected the conceptual understanding of students; one of them was the book. Based on the data from the implementation of a questionnaire on junior high school students, their learning resources (books, etc.) have not been able to help them understand many concepts of physics including the concepts of electrostatics.Some abstract concepts in physics make them more difficult to understand physics. This study aimed to develop electrostatic teaching material-oriented to conceptual understanding for junior high school students. We use the ADDIE model, i.e., analyze, design, development, implementation, and evaluation. The result of this study shows that the teaching material is feasible to use in learning based on the feedback from validators.

The use of interesting instructional media such comics can affect students' motivation. However, insufficient instructional media can demotivate students in learning. The purposes of this study were to produce a folklore-based comic, to determine the feasibility and students’ response to the comic, and to describe the increasing of students’ motivation after using the comic. The study was conducted at Senior High School 1 Muaro Jambi and the participants were 25 science students of grade 11th in 2019. The type of research was used pre-test and post-test single group design model. The ADDIE model used for prepared instructional designs of folklore-based comics. The folklore-based comic instructional designs validated by material and instructional media experts before being implemented to students. The data of experts’ validations, students’ responses and motivations were collected by using questionnaire of experts’ validation, students’ responses, and students’ motivation. The result of this study is Newton’s law comic based on Indonesian folklore, Orang Kayo Hitam, that originated from Jambi region. The result of material validation is X ̅=3.77 in the good category and instructional media validation is X ̅=3.62 in the good category. The assessment of students in the form of response questionnaire is X ̅=4.31 in the very good category. The gain value of students’ motivation after using the comic is 0.39 in the medium category. It can be concluded that the folklore-based comic is feasible to use in learning and get positive responses from the students. The comic also can be used as an alternative medium to increase students’ motivation significantly (t(24)=-5.185, p<.005) and assist them to understand Newton’s law concepts easier.

Self-healing cement is a novel topic in concrete technology. Concrete is created to have its own ability to heal cracks. Crack closure is due to the material deposition of the gap so causing the crack closed. Materials used in this paper is mortar composition with ordinary portland cement replaced by calcium carbonate (CaCO3) and rice husk ash. There are three testing presented in this paper. The first is compressive test to determine the compression applied to mortar for initial cracks. The second is an ultrasonic pulse velocity (UPV) test to observe the depth of cracks and density of each composition. The third is macroscopic investigation to observe cracks wide in each mixture. The maximum compressive strength of 22.46 MPa shown by specimens made with 10% rice husk ash and 10% calcium carbonate cement. By the end of healing process, it reached 23.18 MPa. It was also shown that in crack depth decreased from 38 mm to 16 mm. From this analysis, it can be concluded that rice husk ash (RHA) and calcium carbonate (CaCO3) can be utilized as self-healing concrete materials.