School kid drawing on blackboard at home. Education.

Schoolboy crying or sleeping at his desk at home

Teacher teaching and writes mathematical equations on the blackboard. Education and School concept.

Female hand holding white chalk in front of a blackboard with Einstein formula. Education and school concept.

Teacher teaching and writes mathematical equations on the blackboard. Education and School concept.

Female hand holding white chalk in front of a blackboard with Einstein formula. Education and school concept.