Understanding Teacher Practices in Outdoor STEM Implementation: A Pedagogical Content Knowledge Perspective. - Pitiporntapin, Sasithep; Butkatunyoo, Oraphan; Piyapimonsit, Chatsiri; Thanarachataphoom, Thananun; Chotitham, Sareeya; Lalitpasan, Usanee (Research in Science Education, 2026)