Seriöser Lehrer mit Brille blickt in die Kamera, während er neben der Tafel steht - Stockfoto & -bild

Smiling teacher looking away and pointing with finger near chalkboard

Exhausted teacher with headache touching forehead while standing with hand on hip near chalkboard

Serious teacher in eyeglasses showing stop gesture while standing near chalkboard

Surprised teacher showing idea gesture while standing with hand on hip near chalkboard

Strict teacher in eyeglasses pointing at book while standing near chalkboard

Thoughtful teacher touching head and looking away while standing with hand on hip near chalkboard

Young teacher touching eyeglasses and eye while standing near chalkboard

Teacher in eyeglasses explaining math formulas on chalkboard near digital camera in class

Excited and stylish preteen girl with dyed strands of hair wearing knitted sweater and looking at camera while pointing with fingers isolated on green, contemporary fashion for preteen concept

Teacher talking near math formulas on chalkboard and blurred digital camera in classroom

Teacher holding laptop during online lesson near chalkboard with math formulas in class

Thoughtful woman looking away while holding pen and notebook on grey background

Surprised woman in glasses reading book isolated on white

Happy teacher holding chalk near mathematic formulas on chalkboard

Group of schoolchildren bullying sad girl with smartphone