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

Trumpet Outlined Icon

A science class blackboard with drawings such as an uterus, a science flask, a virus and a heart shape.

Blackboard With Science And Biology Drawings

A blackboard with many education elements drawn on it, like letters, jagged lines, molecules and books.

A drawing or outline of a compass rose 
or geographic directions.

A blackboard with science elements drawn on it, such as a DNA chain, a chemistry formula, a Venn diagram and molecules.

Many history and geography icons, drawings or outlines, such as roman dates, planet Earth and a Chinese temple, as blackboard content for a lesson.

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

A blackboard with many history elements drawn on it, such as roman dates, planet Earth and a Chinese temple. 

An art class blackboard with drawn elements such as faces, a music note, fish and a musical instrument.

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

A blackboard complete with geometry explanation and drawings, such as a right triangle, a pie chart and an equation.