Positieve leraar wijst naar wazig schoolbord met wiskundige formules in de buurt van digitale camera op school - Stockfoto’s en -afbeeldingen

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

Happy teacher holding chalk near mathematic formulas on chalkboard

Beautiful young teacher writing on blackboard in classroom

Teacher having online lesson on laptop near math formulas on chalkboard

Teacher having video call on laptop near chalkboard with math formulas

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

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

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

Smiling teacher looking away and pointing with finger near chalkboard

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

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

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

Shocked teacher touching face and pointing with finger near chalkboard

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