Lehrer hält Laptop während Online-Unterricht neben Tafel mit Mathe-Formeln im Unterricht - Stockfoto & -bild

Teacher pointing at math formulas on chalkboard during online lesson in class

Teacher having online lesson on laptop near math formulas on chalkboard

Teacher pointing at math formulas on chalkboard during online lesson in class

Positive teacher pointing at blurred chalkboard with math formulas near digital camera in school

Happy teacher holding chalk near mathematic formulas on chalkboard

Teacher having video call on laptop near chalkboard with math formulas

Beautiful young teacher writing on blackboard in classroom

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

Brunette doctor in white coat writing chemical formulas on glass board in lab

Shocked geometry teacher touching face and pointing with finger at chalkboard with illustration

Smiling teacher looking away and pointing with finger near chalkboard

Low angle view of blurred chemist holding clipboard and felt pen near chemical formulas on glass board

Shocked teacher touching face and pointing with finger near chalkboard

Blurred doctor with felt pen and clipboard writing chemical formulas on glass board

Low angle view of scientist with felt pen near blurred formulas on glass board

Laughing teacher in eyeglasses holding book while standing near chalkboard with open arm