In which teaching aid, a blackboard can be included?

کس تدریسی امداد میں ، بلیک بورڈ کو شامل کیا جاسکتا ہے؟

Audio aid

Audio-visual aid

Visual aid

None of these

A blackboard is seen, not heard, so it is a visual teaching aid.

It helps in illustrating and explaining concepts visually to students.