FUN RIDDLES

A blackboard is an essential tool in classrooms often used for writing lessons or sharing information. It's typically black or green in color and as we clean it with a cloth or sponge it often turns darker picking up chalk marks and dust. This phenomenon occurs due to the chalk residue and dirt accumulating on its surface making it appear blacker as we wipe it clean. The blackboard serves as a teaching aid for teachers and students alike fostering creativity and knowledge exchange.