Dadi Rusdiana

Problem-Solving Laboratory-Based Course Development to Improve Mental Model and Mental-Modeling Ability

One of the factors that cause a low level of the mental model (MM) and mental-modeling ability (MMA) of students who are physics teacher candidates in one of the LPTK in Palu-Indonesia is the traditional course program. The students are unable to use their knowledge to solve the problems. Therefore, it is necessary to develop problem-solving experimentbased course program to improve physics teacher candidate’s mental model (MM) and mental-modeling ability (MMA). The development of this course program uses R & D (research and development) method. This developmental process produced course program manuals consist of problem-solving-based course model, LKM (students’ worksheet), PD (lecturer guide), and assessment which focuses on improving physics teacher candidate’s MM and MMA. The manuals have been verified in electronic and magnetic course material. Keywords—Mental model (MM), Mental-modeling ability (MMA), Course program, and problem-solving laboratory

Exploration of student’s creativity by integrating STEM knowledge into creative products

Creativity is an important capability that should be held to competitive standards in the 21st century in entering the era of information and knowledge. It requires a creative generation that is able to innovate to meet the challenges of an increasingly complex future. This study examines the student’s creativity level by integrating STEM (Science, Technology, Engineering, and Mathematics) knowledge to make creative products in renewable energy (solar energy). Total respondents in this study were 29 students who take applied science course. This research used qualitative and quantitative method (mixed methods), and used “4P” dimension of creativity to assess student’s creativity level. The result showed a creative product is influenced by STEM knowledge that can support student’s creativity while collaborating an application of knowledge, skills, and ability to solve daily problems associated with STEM.

Combination of inquiry learning model and computer simulation to improve mastery concept and the correlation with critical thinking skills (CTS)

Among the purposes of physics learning at high school is to master the physics concepts and cultivate scientific attitude (including critical attitude), develop inductive and deductive reasoning skills. According to Ennis et al., inductive and deductive reasoning skills are part of critical thinking. Based on preliminary studies, both of the competence are lack achieved, it is seen from student learning outcomes is low and learning processes that are not conducive to cultivate critical thinking (teacher-centered learning). One of learning model that predicted can increase mastery concepts and train CTS is inquiry learning model aided computer simulations. In this model, students were given the opportunity to be actively involved in the experiment and also get a good explanation with the computer simulations. From research with randomized control group pretest-posttest design, we found that the inquiry learning model aided computer simulations can significantly improve students’ mastery concepts than the c...

MENENTUKAN BESAR MEDAN LISTRIK RADIAL PADA BERBAGAI JENIS KONDUKTOR YANG DIALIRI ARUS LISTRIK TETAP

A typical example in courses on electricity and magnetism is that of a conductor carrying a steady current. It is said that the electric field inside the conductor is parallel to the current and that there is no transverse (radial) component of the field. While this is reasonable assumption justified for pedagogical purposes, it is not rigorously true. In this paper, the transverse electrical field is calculated as being different from zero, but negligible from an experimental point of view. For various conductors, the transverse electrical field is a polynomial function from steady current. Keywords : Transverse electrical field, steady current, conductor