A blackboard 'coffee time' sign showing an outlined disposable cup of coffee.

Blackboard Coffee Time Sign

An outlined icon or drawing of a linear trumpet, such as blackboard content for music class.

Trumpet Outlined Icon

The word "Arts" handwritten in capital letters, such as blackboard content for art class.

An icon featuring a basketball net and backboard.

A math class blackboard with equations and scribbles.

An outline or drawing of a Chinese temple or building, such as blackboard content for geography class.

A blackboard with mathematical equations, magnets and an eraser.

A blackboard menu with a variety of options.

An empty blackboard with a single thick chalk stick or eraser.

An outlined or minimalistic drawing of a triangular science flask as blackboard content for science class.