After completion of class teaching-

Cleaning the blackboard is a common practice after class teaching. It ensures that the board is ready for the next class, maintaining a neat and organized learning environment.

• Teachers often take responsibility for cleaning the blackboard as part of their overall classroom management duties.

Key Points Procedure:

• The teacher can use an eraser to remove chalk residue from the board.
• Wiping the board with a damp cloth or sponge may be necessary to ensure a clean surface.
• If a whiteboard is used, appropriate markers and erasers should be used for cleaning.

Benefits:

• Promotes a Professional Environment: Cleaning the blackboard contributes to a professional and organized classroom appearance, creating a positive learning atmosphere.
• Readiness for the Next Class: A clean blackboard ensures that the board is ready for the next teacher and their lesson.

Hence, the correct answer is The teacher should clean the black board.