Lächelnder Lehrer zeigt mit Finger auf Kreidetafel mit mathematischer Formel - Stockfoto & -bild

Smiling teacher pointing with hand near chalkboard during mathematic lesson

Brunette teacher with book and chalk smiling near equation on chalkboard

Positive teacher pointing with finger during mathematic lesson in school

Smiling teacher with chalk standing near chalkboard during lesson

Smiling teacher with chalk showing like near chalkboard with equation

Teacher looking at book near mathematic equation on chalkboard

Smiling teacher holding chalk and pointing at equation on chalkboard in classroom

Teacher with book and chalk pointing with finger during lesson in classroom

Cropped view of teacher with chalk writing mathematic formula on chalkboard

Cropped view of teacher writing equation on chalkboard

Cropped view of teacher writing equation on chalkboard, banner

Low angle view of african american businesswoman with pencil looking away, banner

Happy redhead student in glasses and orange sweater reading book isolated on blue

Happy redhead student in glasses and orange sweater holding notebooks and paper cup isolated on blue