math teacher explaining primary school basic mathematics on whiteboard in classroom

• basic, board, caucasian, class, classroom, counting, education, elementary, equations, explain, female, glasses, happy, lesson, marker, math, mathematics, number, person, portrait, primary, school, showing, simple, smiling, standing, study, sum, teach, teacher, white, whiteboard, woman, young
• ID: 1937022376
• Model: 19694905
• 7420 x 4949 pixels