En
  • En English
  • De Deutsch
  • Fr Français
  • Sp Español
  • Ru Русский
  • It Italiano
  • Pt Português
  • Ua Українська
6971903 results

    OrientationOrientation
    PeoplePeople
    CategoryCategory
    ColorColor
    EditorialEditorial
    Safe SearchSafe Search
    Clear
    Hide
    Senior lecturer showing idea gesture — Stock Photo
    Senior lecturer showing idea gesture
    Grey hair professor stretching in empty lecture room — Stock Photo
    Grey hair professor stretching in empty lecture room
    Smiling african american student using digital tablet and listening music in headphones — Stock Photo
    Smiling african american student using digital tablet and listening music in headphones
    Side view of grey hair professor correcting something at blackboard — Stock Photo
    Side view of grey hair professor correcting something at blackboard
    Senior lecturer looking at crumpled pieces of paper on table — Stock Photo
    Senior lecturer looking at crumpled pieces of paper on table
    A man engrossed in a book, seated in a lecture hall surrounded by fellow students from diverse backgrounds — Stock Photo
    A man engrossed in a book, seated in a lecture hall surrounded by fellow students from diverse backgrounds
    Grey hair professor looking at book — Stock Photo
    Grey hair professor looking at book
    Selective focus of students listening teacher in lecture hall — Stock Photo
    Selective focus of students listening teacher in lecture hall
    Student with notebook sitting with friends in lecture hall — Stock Photo
    Student with notebook sitting with friends in lecture hall
    Senior lecturer protecting himself of falling crumpled pieces of paper — Stock Photo
    Senior lecturer protecting himself of falling crumpled pieces of paper
    Smiling multicultural students using digital tablet and laptop in lecture hall — Stock Photo
    Smiling multicultural students using digital tablet and laptop in lecture hall
    Grey hair professor leaning on table and walking stick — Stock Photo
    Grey hair professor leaning on table and walking stick
    Cropped view of student in denim shirt holding pen and notebook — Stock Photo
    Cropped view of student in denim shirt holding pen and notebook
    Multicultural group of students attentively listening in a university lecture hall — Stock Photo
    Multicultural group of students attentively listening in a university lecture hall
    Two multiethnic students with notebook and digital tablet in lecture hall — Stock Photo
    Two multiethnic students with notebook and digital tablet in lecture hall
    Grey hair professor pointing on something with wooden pointer — Stock Photo
    Grey hair professor pointing on something with wooden pointer
    Back view of senior lecturer writing something on blackboard with piece of chalk — Stock Photo
    Back view of senior lecturer writing something on blackboard with piece of chalk
    A man and a woman of diverse backgrounds sit on lecture hall steps, engrossed in conversation and thought — Stock Photo
    A man and a woman of diverse backgrounds sit on lecture hall steps, engrossed in conversation and thought
    Multicultural group of students, including an African American girl, sitting in a lecture hall, focused on their education — Stock Photo
    Multicultural group of students, including an African American girl, sitting in a lecture hall, focused on their education
    A multicultural group of students listening intently in a lecture hall at a university or high school. — Stock Photo
    A multicultural group of students listening intently in a lecture hall at a university or high school.
    Smiling grey hair professor looking at smartphone in lecture room — Stock Photo
    Smiling grey hair professor looking at smartphone in lecture room
    Grey hair professor yawning in empty lecture room — Stock Photo
    Grey hair professor yawning in empty lecture room
    Selective focus of multiethnic students with digital devices in lecture hall — Stock Photo
    Selective focus of multiethnic students with digital devices in lecture hall
    Two multiethnic students with notebook in lecture hall — Stock Photo
    Two multiethnic students with notebook in lecture hall
    Two multicultural students with laptop looking at each other in lecture hall — Stock Photo
    Two multicultural students with laptop looking at each other in lecture hall
    Senior lecturer in empty lecture room screaming and looking at laptop — Stock Photo
    Senior lecturer in empty lecture room screaming and looking at laptop
    Smiling multicultural students with laptop in lecture hall — Stock Photo
    Smiling multicultural students with laptop in lecture hall
    Diverse group of young people engaged in discussion while sitting on steps in lecture hall setting — Stock Photo
    Diverse group of young people engaged in discussion while sitting on steps in lecture hall setting
    Three multicultural students with digital tablet and notebook in lecture hall — Stock Photo
    Three multicultural students with digital tablet and notebook in lecture hall
    Pensive student in denim shirt holding notebook and pen — Stock Photo
    Pensive student in denim shirt holding notebook and pen
    Selective focus of multicultural students in jeans using laptop in university — Stock Photo
    Selective focus of multicultural students in jeans using laptop in university
    Smiling multicultural students with laptop in lecture hall — Stock Photo
    Smiling multicultural students with laptop in lecture hall
    Partial view of students in jeans with notebooks in lecture hall — Stock Photo
    Partial view of students in jeans with notebooks in lecture hall
    A black girl talking on a cell phone next to a man in a lecture hall setting — Stock Photo
    A black girl talking on a cell phone next to a man in a lecture hall setting
    Pensive senior lecturer standing with pencil isolated on white — Stock Photo
    Pensive senior lecturer standing with pencil isolated on white
    Smiling grey hair professor standing in lecture room and looking at camera — Stock Photo
    Smiling grey hair professor standing in lecture room and looking at camera
    Grey hair professor pointing on something at lecture hall — Stock Photo
    Grey hair professor pointing on something at lecture hall
    Smiling grey hair professor sitting in empty lecture room — Stock Photo
    Smiling grey hair professor sitting in empty lecture room
    Students of various backgrounds attentively listening to a lecture in a university lecture hall setting. — Stock Photo
    Students of various backgrounds attentively listening to a lecture in a university lecture hall setting.
    Grey hair professor holding apple and using laptop — Stock Photo
    Grey hair professor holding apple and using laptop
    Multicultural students with laptop and digital tablet listening teacher in lecture hall — Stock Photo
    Multicultural students with laptop and digital tablet listening teacher in lecture hall
    Cropped image of thoughtful senior lecturer sitting at table with pencil and notebook — Stock Photo
    Cropped image of thoughtful senior lecturer sitting at table with pencil and notebook
    Smiling grey hair professor sitting in empty lecture room with laptop — Stock Photo
    Smiling grey hair professor sitting in empty lecture room with laptop
    Multicultural students using laptop and digital tablet in lecture hall — Stock Photo
    Multicultural students using laptop and digital tablet in lecture hall
    Senior lecturer holding piece of chalk and looking away — Stock Photo
    Senior lecturer holding piece of chalk and looking away
    Senior lecturer holding book and looking away — Stock Photo
    Senior lecturer holding book and looking away
    Grey hair professor talking by smartphone and looking away — Stock Photo
    Grey hair professor talking by smartphone and looking away
    Grey hair professor sitting on desk in empty lecture room and using laptop — Stock Photo
    Grey hair professor sitting on desk in empty lecture room and using laptop
    Tired grey hair professor touching eyes at blackboard — Stock Photo
    Tired grey hair professor touching eyes at blackboard
    Senior lecturer in empty lecture room screaming and looking at camera — Stock Photo
    Senior lecturer in empty lecture room screaming and looking at camera
    Lecture — Stock Photo
    Lecture
    Grey hair professor looking out from book — Stock Photo
    Grey hair professor looking out from book
    Cropped image of lecturer standing at podium tribune during seminar in conference hall — Stock Photo
    Cropped image of lecturer standing at podium tribune during seminar in conference hall
    Selective focus of businessman in formal wear using laptop during conference — Stock Photo
    Selective focus of businessman in formal wear using laptop during conference
    High angle view of attractive lecturer looking at smiling assistant during seminar in conference hall — Stock Photo
    High angle view of attractive lecturer looking at smiling assistant during seminar in conference hall
    A group of multicultural students listening attentively in a lecture hall at a university. — Stock Photo
    A group of multicultural students listening attentively in a lecture hall at a university.
    Grey hair professor covering face with book — Stock Photo
    Grey hair professor covering face with book
    Smiling grey hair professor holding paper plane in lecture hall — Stock Photo
    Smiling grey hair professor holding paper plane in lecture hall
    Scared businessman in suit standing at podium tribune during conference — Stock Photo
    Scared businessman in suit standing at podium tribune during conference
    Serious lecturer standing on podium tribune near microphone and laptop — Stock Photo
    Serious lecturer standing on podium tribune near microphone and laptop