Bolas de papel amassadas voando na professora em sala de aula com quadro-negro no fundo - Banco de fotos e imagens

Smiling female teacher with wooden pointer explaining mathematical equations in classroom

Beautiful female teacher with wooden pointer explaining mathematical equations in classroom

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

Attractive female teacher with wooden pointer explaining mathematical equations in classroom

Partial view of female teacher in formal wear with wooden pointer explaining mathematical equations in classroom

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

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

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

Male teacher in formal wear wiping mathematical equations with sponge in classroom

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

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

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

Male teacher sitting at desk, pointing finger in air and explaining equations in maths classroom

Serious 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

Male teacher wiping mathematical equations with sponge from chalkboard in classroom