Bolas de papel amassadas voando no professor masculino com os braços cruzados em sala de aula com quadro-negro no fundo - Banco de fotos e imagens

Crumpled paper balls flying at frightened male teacher in classroom with chalkboard on background

Smiling male teacher in formal wear holding wooden pointer in front of chalkboard with equations

Handsome male teacher holding glasses and looking at camera in maths class

Focused male teacher in formal wear looking at camera and holding wooden pointer in front of chalkboard with equations

Handsome male teacher in formal wear holding wooden pointer and explaining equations in class

Caught on cheating. Man formal wear classic suit looks smart, chalkboard background. Man noticed cheating during exam test lesson. Teacher wondered of unfair behaviour holds book in hand.

Serious male teacher in formal wear holding wooden pointer in front of chalkboard with equations

Male teacher in formal wear and glasses holding wooden pointer and explaining equations in class

Crumpled paper balls flying at frightened male teacher in classroom with chalkboard on background

Portrait of male teacher near blackboard in classroom

Female teacher in formal wear holding glasses and looking away in classroom

Female teacher standing in formalwear near chalkboard and holding glasses

Female teacher with wooden pointer explaining mathematical equations in classroom

Crumpled paper balls flying at female teacher in classroom with chalkboard on background

Female teacher looking at camera and pointing with finger at mathematical equation on chalkboard in class

Beautiful female teacher with wooden pointer explaining mathematical equations in classroom

Female professor showing equations in classroom

Female teacher in glasses sitting at desk and pointing at laptop with blank screen in classroom