Pengaruh Model Problem-Based Learning Berbantuan LKPD Multirepresentasi Terhadap Keterampilan Argumentasi Ilmiah Siswa SMP pada Pembelajaran IPA

Abstract

Scientific argumentation is one of the important skills in the 21st century. Students need to master scientific argumentation skills orally and in writing. However, the fact is that students' scientific argumentation skills are only at level 1, which is limited to stating claim without any data and warrant. The use of the PBL model is considered to be able to improve scientific argumentation skills, but its application still has various obstacles so that it requires tools for understanding the material by students. This study aims to explore the level of students' scientific argumentation skills before and after learning with the PBL model accompanied by multirepresentation worksheet, as well as examining the effect of the application of the model on the scientific argumentation skills of junior high school students in science learning. The approach in this research is quantitative using a quasiexperimental type in the form of non-equivalent control group design. Data were collected via test and non-test techniques; test instruments are scientific arguments, while non-test instruments include interviews, observations, and documentation. The results showed that students' scientific argumentation skills before learning were in the weak category, and increased to a strong category after implementation of the PBL model assisted by multirrepresentation worksheet. The influence test produces a sig value. (2-tailed) which is 0.000 < 0.05, which proves that the application of the model to scientific argumentation skills has a significant influence. Therefore, the conclusion is that the multirepresentation worksheet assisted PBL model significantly affects the scientific argumentation skills for junior high school students in science learning, from the weak category to the strong category.