Every teacher has classroom stories—stories of those times which justify the profession to itself, when some combination of luck, instinct, or planning produce a moment of dramatic learning.

Sometimes the story is about a single occasion, as it is in my previous post. Sometimes it's a carefully developed exercise, used every semester for years on end, like the one this teacher recounts (brilliant, by the way—you should check it out after sending me yours).

If any of you are teachers, or have been in the past, and have such a story, please send them in. You can reach me here, or by clicking submissions in the sidebar or footer.

(One reader recently had trouble using the submissions page, so please let me know—by using one of the other contact links—if this happens to you, or if you have any questions, so I can figure out how to fix it. Most people have no problem, so far.)