Adaptive teaching is considered a cornerstone of effective literacy teaching. Research has explored this dynamic aspect of classroom instruction and has found that given recent educational reform efforts implementing adaptive teaching during reading instruction has been particularly difficult. This study examined a yearlong inquiry of teacher adaptability during reading instruction across six classrooms in two school districts in the Pacific Northwest. Guided by theories of social constructivism and teacher metacognition, data analysis occurred in multiple phases to understand teacher adaptations and rationales for adaptations. Analysis yielded specific adaptations during reading instruction consistent with explicit instruction and rationales reflective of students' instructional needs. Findings contribute to the literature on adaptive teaching.