Keywords
40-45 years, assistance, business suit, caucasian ethnicity, classroom, dedication, education, formal clothing, gesturing, group of people, guidance, hand in air, hands in pocket, head and shoulders, human hand, indoors, learning, mature adult, mature men, mouth open, paper, standing, teacher, teaching, tie, tilt, unknown age, unrecognizable person, 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, 1574r-0538, 1574r 0538, 1574r0538