Un uomo in abiti casual sta accanto a una bambina, entrambi guardando con attenzione una lavagna piena di equazioni e diagrammi. - Foto e immagini stock

Happy girl standing with book in classroom near african american teacher

Redhead teen schoolboy holding book and talking near african american teacher during lesson in class

Schoolgirl with digital tablet talking to classmates near african american teacher in classroom

African american teacher reading book to pupils during lesson

Selective focus of happy boy looking at camera near blurred african american teacher writing on whiteboard

Teenage schoolboy talking while holding digital tablet near african american teacher in classroom

Girl reading book while standing near smiling african american teacher and blurred classmates

Partial view of teacher with book near schoolgirl sitting at desk and writing in copy book

Smiling teacher looking at schoolgirl sitting at desk and writing in notebook