Female Teacher Standing At Whiteboard Teaching Lesson To Elementary Pupils In School Classroom

education school teacher female woman teaching maths math numeracy whiteboard group pupils students sitting desk lesson class classroom elementary primary learning child children boy girl african american black asian caucasian multi-cultural women male occupation together 5 years old 6 years old 7 years old 20s twenties close up handheld slow motion r3d red digital camera front view people person smiling