Young female infant school teacher showing a book to kids in a classroom, close up

indoors day five people incidental people part of person boy girls adult young adult woman 20s millennial african american ethnicity black caucasian mixed race person multi-ethnic group teacher kids children pupils schoolchildren schoolgirls schoolboy classmates smiling sitting learning teaching listening holding book showing childhood education communication school classroom lesson nursery school infant school kindergarten concentrating interested attention group learning three quarter length selective focus close up slow motion handheld