Professor ou palestrante atraente de pé com braços dobrados olhando para uma placa de giz em branco com espaço de cópia com um sorriso tranquilo - Banco de fotos e imagens

Thoughtful teacher seeking a way to explain things to his pupils standing at the chalkboard looking pensively into the air

Portrait of young bearded teacher standing against blackboard in classroom

Thoughtful male teacher looking at a blank empty green blackboard with a stick of chalk in his hand and copy space for your text

Thoughtful male teacher in the classroom standing leaning against a clean blank blackboard with his hand to his chin staring into the air

Friendly young male lecturer or teacher standing with folded arms in front of a blank green chalkboard with copy space

Confident smart male teacher or professor standing in front of a blank chalkboard in a classroom clutching a folder of notes to his chest

Young male teacher or post graduate university student standing daydreaming leaning back with folded arms against a clean blackboard with copy space staring into the air

Male teacher taking a question from the class as he stands in front of a blank chalk board extending his hand

Confident smart male teacher or professor standing in front of a blank chalkboard in a classroom clutching a folder of notes to his chest

Male teacher taking a question from the class as he stands in front of a blank chalk board extending his hand

Portrait of young bearded teacher standing against blackboard in classroom

Middle-aged male teacher writing on a blank chalkboard while holding a tablet computer in his hand

Thoughtful young man in a classroom standing in profile in front of a blank green blackboard with copyspace staring pensively into the distance

Male teacher writing on a blank chalkboard while holding class notes in his hand in a close up side view

Male teacher taking question in class pointing with his pen with look of concentration

Thoughtful mature male teacher against blank blackboard - copy space for text

Male teacher taking a question from the class