Black-board can be included in which category of teaching aids?

Black-board can be included in which category of teaching aids? Options: (a) Audio-aids (b) Visual aids (c) Audio-visual aids (d) None ✅ Correct option: (b) Visual aids Explanation (200+ words): A blackboard is a visual teaching aid because it appeals to the sense of sight. It helps teachers explain concepts clearly using writing, diagrams, charts, and illustrations. Blackboard teaching supports clarity, interaction, and reinforcement of learning. It does not produce sound, so it cannot be audio or audio-visual. Visual aids enhance attention and retention. Hence, blackboard is classified as a visual aid. 10 PPSC-Oriented Facts: 1. Visual aids appeal to sight. 2. Blackboard is traditional aid. 3. Supports explanation. 4. Enhances clarity. 5. Encourages interaction. 6. Improves retention. 7. Cost-effective teaching tool. 8. Widely used in classrooms. 9. Helps slow learners. 10. Reinforces learning.