Profesor que tiene lección en línea en el ordenador portátil cerca de fórmulas matemáticas en pizarra - Foto e imagen de stock

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

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

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

Teacher having video call on laptop near chalkboard with math formulas

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

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

Happy teacher holding chalk near mathematic formulas on chalkboard

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

Smiling teacher looking away and pointing with finger near chalkboard

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

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

Shocked teacher touching face and pointing with finger near chalkboard

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

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

Excited african american teacher showing wow gesture near blurred children in classroom

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