Development of Local Wisdom Based Science Teaching Materials in Ngingas Village to Improve the Critical Thinking Skills of Fifth Grade Students of Elementary School

This study aims to produce local wisdom-based teaching material products in Ngingas Village to improve critical thinking skills of fifth grade students of elementary school. This research is a development research owned by Thiagarajan, Semmel, and Semel (1974) or called 4D Research and development which has four stages including: determination, design, development, and distribution. The subject of the study was the development of local wisdom-based science teaching materials in Ngingas Village by being tested in the fifth grade of SDN Ngingas Subdistrict Waru Sidoarjo using the design of the one group pretest-posttest. Teaching materials and their devices have received valid category mode from the validator. The practicality of teaching materials can be shown from ( 1) The implementation of overall learning gets a very good category. ( 2) Learning activities show an increase in the stage of understanding the focus of the problem and drawing conclusions. ( 3) Students' responses to learning using local wisdom-based teaching materials in Ngingas Village have a category of levels of interest from students . The effectiveness of teaching materials that have a good level of readability, learning outcomes on the test of critical thinking skills is very good because being able to achieve the minimum completeness criteria means that students complete in learning, and. The conclusion of this study is that local wisdom-based science teaching materials in Ngingas Village developed meet the criteria of validity, practicality and effectiveness so that they can be used to improve critical thinking skills of fifth grade students of elementary school. KeywordTeaching Materials, Local Wisdom, Critical Thinking Skills.