Desain Pembelajaran Student’s Conceptual Construction Guider Berdasarkan Kesulitan Mahasiswa Calon Guru Fisika pada Konsep Gerak Parabola

Abstract

This research is motivated finding of the student difficulties in projectile motion. In general, the difficulties students in understanding the concept of projectile motion as follows. First, draw the vector component's in the direction x (horizontal) and y (vertical). Second, distinguish the velocity vector's, the vector component of velocity, the velocity vector component in the x and y directions. Third, too focus on formula's for half a projectile trajectory, maximum height, maximum distance. Fourth, always assumed final velocity moving object projectile when it hits the ground is always zero. Fifth, the velocity to zero at the top (only the speed in the vertical direction is zero). Sixth, the acceleration is owned by the object in the x and y directions. Seventh, found some students use the law of sines cosines rule's on the determination of the distance/ height (although the determination of the distance/ high based on the speed information). In Prediction, the process of learning that takes less facilitate the development of thinking ability of students to build its own concept (constructivism). This research aims to create a lesson plan called Student's Conceptual Construction Guider. The method used is descriptive analysis method. Conceptual understanding of students are evaluated through tests shaped conceptual description. The results showed that the learning Student's Conceptual Construction Guider can facilitate the development of thinking ability of students to build its own concept in understanding the concept of a projectile motion.