Usmívající se učitel odvrací zrak a ukazuje prstem na tabuli - Stock fotografie a obrázky

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

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

Smiling teacher looking at camera and pointing with finger near chalkboard

Happy teacher in eyeglasses looking at camera while standing with clenched hands near chalkboard

Happy teacher smiling at camera while standing with open arm near chalkboard

Serious teacher in eyeglasses showing stop gesture while standing near chalkboard

Shocked teacher touching face and pointing with finger near chalkboard

Excited teacher looking at camera and pointing with finger near chalkboard

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

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

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

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

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

Smiling teacher pointing with fingers near chalkboard with math formulas and digital camera in class

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

Happy teacher holding chalk near mathematic formulas on chalkboard

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

Teacher having video call on laptop near chalkboard with math formulas