Keywords
20's, 20-24 years, 20-25, 20-30, 20s, 25-29 years, 25-30, 40's, 40-44 years, 40-45, 40-50, 40s, 45-50, 50-55, 50-60, 55-59 years, 55-60, acknowledging, adult, answer, answering, arm, arms raised, asian, asian ethnicity, asking, blackboard, caucasian, chalk board, chalkboard, class, classmate, classroom, college, color, color image, colour, desk, educating, education, educator, enquiring, explaining, far eastern, fellow, female, fifties, fifty, focus on foreground, forties, forty, furnishing, furniture, gal, gentleman, gesturing, group, guy, head & shoulders, head and shoulders, hearing, hispanic, horizontal, human, human being, indoor, indoors, information, inquiring, inside, instructing, intelligence, knowledge, korean, korean ethnicity, lady, latin american, latin american and hispanic ethnicity, latina, latino, learning, lecture, listener, listening, male, man, mature adult, mature men, mature women, medium group of people, mid life, middle age, middle aged, middle-age, middle-aged, mixed race, mixed race person, motioning, multi-ethnic group, multicultural, multiculturalism, occupation, oriental, participation, people, person, photography, pointing, professor, pupil, question, questioning, raised, raising, responding, result, school, schoolmate, schoolroom, seated, signaling, sitting, solution, standing, student, studying, teacher, teaching, tuition, twenties, twenty, university, western european, wisdom, woman, women, young adult, young men, young women, 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, bld200254