Final answer:
A classroom walkthrough typically lasts for about 10-30 minutes and is conducted by an administrator or instructional coach to observe teaching practices and student engagement.
Step-by-step explanation:
The duration of a "classroom walkthrough" can vary depending on the purpose and scope of the walkthrough. In general, a classroom walkthrough is a brief observation conducted by an administrator or instructional coach to gather insights about teaching practices, student engagement, and classroom environment. It typically lasts for about 10-30 minutes, although some walkthroughs may be shorter or longer depending on the specific objectives.