Profesor sosteniendo tiza y hablando cerca de pizarra con fórmulas y cámara digital - Foto e imágenes de stock

Teacher talking near math formulas on chalkboard and digital camera in class

Teacher talking near digital camera and chalkboard with math formulas in class

Smiling teacher holding chalk near chalkboard with formulas and digital camera

Low angle view of teacher talking near math formulas on chalkboard and digital camera in school

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

Teacher holding chalk near blurred digital camera and chalkboard in class

Teacher in eyeglasses talking near blurred digital camera and chalkboard

Tutor pointing at chalkboard and holding digital tablet near camera in school

Cheerful teacher holding chalk near chalkboard and digital camera in classroom

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

Selective focus of digital camera with happy girl gesturing on screen

Smiling teacher looking away and pointing with finger near chalkboard

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

Shocked teacher touching face and pointing with finger near chalkboard

Selective focus of photographer gesturing near assistant in photo studio

Selective focus of digital camera near businessman pointing with hands at computer monitors during online streaming on blurred background

Selective focus of makeup artist near model and art director