Question

look on the blackboard, look at the blackboard or look in the blackboard which sentence do you think is correct

Answer 1

hey mate here is ur answer
look at the blackboard
hope it helps

Answer 2

ANSWER:

The correct phrase is ‘Look at the blackboard’.

EXPLANATION:

    The preposition ‘in’ is used to signify inside an area, moving from a point that is outside to a point that is inside.

Example: Sumesh works in the Department of Justice.

The preposition ‘at’ refers what an action is referring to or it is used to show a condition that is happening.

Example: She is pointing her finger at that bird.  

Whereas, the preposition ‘on’ is used to mention a point that is placed on the top of something.

Example: My journal is placed on the desk.