over shoulder view of female teacher showing a picture in a book to a group of kindergarten children sitting on chairs in a classr

20s adult african american attention black book boy caucasian childhood children classmates classroom close communication copy day education ethnicity focus four front girl group holding horizontal indoors infant interested kids kindergarten learning length lesson listening millennial mixed multiethnic nursery of part people person pointing pupils quarter race school schoolchildren schoolgirls selective showing sitting smiling space teacher teaching three up view woman young