blackboards

the teacher wrote the lesson on the blackboards.

students often take notes from the blackboards.

we need to clean the blackboards after class.

blackboards are essential tools in the classroom.

she prefers using colored chalk on the blackboards.

the blackboards were covered with mathematical equations.

he drew a diagram on the blackboards to explain the concept.

blackboards can be found in most schools.

we often use the blackboards for group discussions.

the blackboards need to be updated with new information.