Panoramaaufnahme eines Mannes, der mit Kreide auf eine Tafel schreibt - Stockfoto & -bild

Hand with a chalk, mathematical formulas on a board

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

Hand of child holding chalk and writing on blackboard at school

Hand of little girl holding a chalk and writing on the empty blackboard. Shot in the classroom

Close up view of a caucasian teacher writing on a black board in a classroom in a primary school

Female hand writing on blackboard with chalk, close up

Cropped view of african american teacher writing on chalkboard

Panoramic shot of schoolchild holding chalk near chalkboard on green

Cropped view of man writing numbers with chalk on blackboard

Cropped view of two multicultural schoolgirls writing on chalkboard isolated on white

Cropped image of senior professor pointing on something with pencil on blackboard

Back view of senior lecturer writing something on blackboard with piece of chalk

Parftial view of two multicultural schoolgirls writing on chalkboard isolated on white