This paper describes the Global Real-time Assessment Teaching Tool for Teaching Enhancement (G-RATE). It is a tool framed around the elements of Bransford, Brown, and Cocking's (1999) "How People Learn" framework and informed from data collected via laboratory observations; focus group interviews with engineering supervisors and graduate teaching assistants; and undergraduate student surveys. The G-RATE allows various stakeholders (i.e., classroom observers, administrators, graduate teaching assistants, undergraduates, and students) to provide feedback about the pedagogical practices of graduate teaching assistants within a laboratory session. Future applications of the tool include the creation of pedagogical profiles for instructors and the dissemination of the tool across multiple educational environments.