Ключевые слова: academic, adult, angle, attitude, background, bearded, bearded man, campus, caucasian, chalk, chalkboard, class, college, concept, develop, draw, flexibility, higher education, homework, indoors, informing, investigation, knowledge, learn, learning, lecturer, lesson, library, man, math, math knowledge, mature, openness, protractor, research, ruler, school, senior, shape, share, standing, stem, stem knowledge, study, teaching, theorem, towards, tutor, university, university lecturer,