Abstract: 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.