In 2014, Teaching TRIOS at Middle Tennessee State University introduced an innovative peer observation model for STEM educators. TRIOS, based on being Time-sensitive, Reciprocal, Inclusive, Operative, and Strength-Based, transforms observation from evaluative to reflective, focusing on faculty strengths to drive change. In this OLSUME talk, I’ll discuss a decade’s worth of lessons from practice, theory, and empirical research. Practically, I’ll detail structuring TRIOS groups in STEM departments, offering guidance for adopting this strategy. Theoretically, I’ll discuss our NSF-funded ACT-STEM project,...