Optimization of Wetland Problems in Physics Learning for Fluid Topic through Contextual Teaching and Learning Approach

This study aims to design and develop high school fluid physics teaching materials based on wetland problems that meet the criteria of valid, practical, and effective. The implementation of the research was carried out in two stages, the design stage of teaching materials and the implementation stage of teaching materials. To see the quality of the validity of teaching materials, a validity assessment was carried out by two validators using a validation sheet, and to see the practicality of teaching materials the implementation of teaching materials was assessed by two observers using observation sheet for the implementation of the lesson plan, and to see the effectiveness of the learning strategy, the implementation of teaching materials conducted on 30 students of PGRI 4 High School Banjarmasin Indonesia as research test subjects and conducted a pretest and posttest to measure students' physics learning outcomes. Analysis of the quality of the validity of teaching materials after the assessment of two validators and the practicality of teaching materials after the assessment of two observers used Percentage of Agreement  analysis. Analysis of the effectiveness of strategies in improving students' physics learning outcomes using normalized gain score analysis from the pre-test post-test score. The results of the analysis show that the validity of the teaching material developed according to the validator is valid, the practicality of the teaching material observed with observation sheet for the implementation of the lesson plan is 3.7 in the very good category with reliability 0.807, the effectiveness of the teaching material is effective according to the gain score obtained is 0, 8 in high category. These results indicate that the high school physics teaching material for fluid topics is based on wetland problems through the CTL approach developed to be suitable for use in the learning process