Keep the prompt short
Live polls work best when the question can be understood instantly. In a classroom, the value comes from quick feedback, not elaborate setup.
Use one poll to check understanding before moving to the next concept, then use the results as a transition.
Let the result shape the explanation
If half the room misses the concept, stop and reteach. If most answers are right, move forward. The live result creates a practical teaching signal.
That is the main reason real-time interaction matters more than post-class surveys in this setting.