Счастливый учитель держит мел рядом с математическими формулами на доске - Стоковое фото и изображение

Positive teacher holding chalk near math formulas on chalkboard

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

Beautiful young teacher writing on blackboard in classroom

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

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

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

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

Shocked teacher touching face and pointing with finger near chalkboard

Serious teacher in eyeglasses looking at camera while standing near chalkboard