Keywords
30-35 years, addition, arithmetic, button down shirt, casual, casual clothes, classroom, color image, day, education, equation, friendly, front view, indicating, indoors, looking at camera, man, mathematics, mid-adult, mid-adult man, number, occupation, one person, open collar, pointing, rolled up sleeves, satisfaction, school, smiling, southern european ethnicity, standing, teacher, teaching, waist up, whiteboard, stock image, images, royalty free photo, stock photos, stock photograph, stock photographs, picture, pictures, graphic, graphics, fine art prints, print, poster, posters, mural, wall murals, faa047000248