Visão parcial da equação de escrita do professor feminino no quadro verde - Banco de fotos e imagens

Woman with white chalk near green blackboard, closeup. Space for text

Hands starting to write on chalkboard

Hand underlining with chalk on school blackboard. Teacher emphasizing something important, mock up copy space

Woman with white chalk near blackboard, closeup. Space for text

Cropped view of male student wiping mathematical equations with sponge in classroom

Cropped view of female teacher holding wooden pointer on chalkboard background

Male teacher in formal wear writing equation on chalkboard in maths class

Beautiful young teacher writing with chalk on blackboard

Pensive male teacher touching chin and solving equation on chalkboard in class

Young african american teenager writing on white board

Male teacher wiping mathematical equations with sponge from chalkboard in classroom

Young attractive teacher pointing at blank chalkboard

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

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