Keywords
25-30 years, above 25, adult, alone, black board, black boards, blackboard, blackboards, brazilian, chalk board, chalk boards, chalkboard, chalkboards, class, classes, classroom, classrooms, college, college professor, college professors, college student, college students, college teacher, college teachers, colleges, color image, color images, colour image, colour images, copy space, education, educator, educators, faculty, half length, instructor, instructors, learn, learning, lecture, lectures, lecturing, lesson, lessons, male, males, man, men, model release, model release yes, model released, occupation, occupations, one, one man, one man alone, one man only, one only, one person, people, person, point, pointing, professor, professors, school, school teacher, school teachers, schooling, schools, student, students, supervisor, supervisors, teach, teacher, teachers, teaching, teaching staff, tutor, tutoring, tutors, universities, university, university professor, university professors, university student, university students, university teacher, university teachers, young adult, young man, 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, b10686