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175 results

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    Senior couple using a digital tablet — Stock Photo
    Senior couple using a digital tablet
    Businessman talking in meeting — Stock Photo
    Businessman talking in meeting
    Man using a digital tablet — Stock Photo
    Man using a digital tablet
    Boy at Green Science Fair sign — Stock Photo
    Boy at Green Science Fair sign
    High school students with hands raised asking questions during lesson in classroom — Stock Photo
    High school students with hands raised asking questions during lesson in classroom
    Thoughtful stylish male in suit sitting table in posh room and looking away — Stock Photo
    Thoughtful stylish male in suit sitting table in posh room and looking away
    Front view of a teenage Caucasian boy in a high school classroom sitting at desk, raising his hand to answer a question, with teenage male classmates sitting at desks working in the background — Stock Photo
    Front view of a teenage Caucasian boy in a high school classroom sitting at desk, raising his hand to answer a question, with teenage male classmates sitting at desks working in the background
    Diver asking buddy how much air he has left using hand signal — Stock Photo
    Diver asking buddy how much air he has left using hand signal
    Thoughtful doubtful beautiful curly haired female in trendy eyeglasses and stylish colorful blouse with floral ornament looking away against pink background — Stock Photo
    Thoughtful doubtful beautiful curly haired female in trendy eyeglasses and stylish colorful blouse with floral ornament looking away against pink background
    Portrait of young ethnic looking at camera wearing trendy denim jacket with floral pattern while standing against gray background — Stock Photo
    Portrait of young ethnic looking at camera wearing trendy denim jacket with floral pattern while standing against gray background
    High school students with arms raised, asking questions in classroom — Stock Photo
    High school students with arms raised, asking questions in classroom
    Rear view of pupils sitting at their desks with hands raised during a lesson in a township elementary school classroom with their teacher standing writing on the blackboard in the background — Stock Photo
    Rear view of pupils sitting at their desks with hands raised during a lesson in a township elementary school classroom with their teacher standing writing on the blackboard in the background
    Three children standing behind presentations — Stock Photo
    Three children standing behind presentations
    Thoughtful stylish male in suit sitting table in posh room and looking away — Stock Photo
    Thoughtful stylish male in suit sitting table in posh room and looking away
    Girl in a science class — Stock Photo
    Girl in a science class
    Portrait of thoughtful doubtful beautiful curly haired female in trendy head wrap looking at camera against yellow background — Stock Photo
    Portrait of thoughtful doubtful beautiful curly haired female in trendy head wrap looking at camera against yellow background
    Female speaker with microphone answering audience questions — Stock Photo
    Female speaker with microphone answering audience questions
    Front view of a young African schoolboy sitting at his desk, raising his hand to answer a question during a lesson in a township elementary school classroom, in the foreground two schoolgirls are listening attentively — Stock Photo
    Front view of a young African schoolboy sitting at his desk, raising his hand to answer a question during a lesson in a township elementary school classroom, in the foreground two schoolgirls are listening attentively
    Serious pensive adult male theater artist with makeup and in elegant outfit looking at camera while thinking over decision — Stock Photo
    Serious pensive adult male theater artist with makeup and in elegant outfit looking at camera while thinking over decision
    Female speaker on stage answering audience questions — Stock Photo
    Female speaker on stage answering audience questions
    Senior couple using a digital tablet — Stock Photo
    Senior couple using a digital tablet
    Woman awarding a rosette badge to a student — Stock Photo
    Woman awarding a rosette badge to a student
    Girl rising hand up and answer to teacher — Stock Photo
    Girl rising hand up and answer to teacher
    Successful adult business people sitting in meeting — Stock Photo
    Successful adult business people sitting in meeting
    Mid section of senior woman playing jigsaw puzzle at home — Stock Photo
    Mid section of senior woman playing jigsaw puzzle at home
    Caucasian businessman standing beside a screen giving presentation to male and female colleagues in meeting room, one raising her hand. Creative business professionals working in a busy modern office. — Stock Photo
    Caucasian businessman standing beside a screen giving presentation to male and female colleagues in meeting room, one raising her hand. Creative business professionals working in a busy modern office.
    Close-up of senior man playing puzzle game at home — Stock Photo
    Close-up of senior man playing puzzle game at home
    Speaker on stage answering audience questions — Stock Photo
    Speaker on stage answering audience questions
    Portrait of young ethnic man making grimace doubting face with finger looking at camera wearing trendy denim jacket with floral pattern while standing against gray background — Stock Photo
    Portrait of young ethnic man making grimace doubting face with finger looking at camera wearing trendy denim jacket with floral pattern while standing against gray background
    Boy looking up at a display of the planets — Stock Photo
    Boy looking up at a display of the planets
    Teacher teaching alphabet with students — Stock Photo
    Teacher teaching alphabet with students
    Male teacher calling on students in classroom — Stock Photo
    Male teacher calling on students in classroom
    Senior couple using a digital tablet — Stock Photo
    Senior couple using a digital tablet
    Pupils gathered around a molecular model — Stock Photo
    Pupils gathered around a molecular model
    A child working at home, looking at the teacher on the screen online lessons raising his hand to answer questions — Stock Photo
    A child working at home, looking at the teacher on the screen online lessons raising his hand to answer questions
    Winning a trophy at the Green Science Fair. — Stock Photo
    Winning a trophy at the Green Science Fair.
    Girl in a science class — Stock Photo
    Girl in a science class
    Group of students and a teacher — Stock Photo
    Group of students and a teacher
    Senior couple playing jigsaw puzzle at home — Stock Photo
    Senior couple playing jigsaw puzzle at home
    Student writing formula and equations — Stock Photo
    Student writing formula and equations
    Man talking at press conference — Stock Photo
    Man talking at press conference
    Serious pensive adult male theater artist with makeup and in elegant outfit looking at camera while thinking over decision — Stock Photo
    Serious pensive adult male theater artist with makeup and in elegant outfit looking at camera while thinking over decision
    Concerned female in sunglasses wearing casual clothes standing with crossed arms against glass wall in Madrid street — Stock Photo
    Concerned female in sunglasses wearing casual clothes standing with crossed arms against glass wall in Madrid street
    Front view close up of a young African schoolboy sitting at a desk and raising his hand to answer a question during a lesson in a township elementary school classroom, in the background is a world map and the blackboard — Stock Photo
    Front view close up of a young African schoolboy sitting at a desk and raising his hand to answer a question during a lesson in a township elementary school classroom, in the background is a world map and the blackboard
    Side view of multi-ethnic group of high school teenagers in a school classroom sitting at desks, all raising their hands to answer a question — Stock Photo
    Side view of multi-ethnic group of high school teenagers in a school classroom sitting at desks, all raising their hands to answer a question
    Curve ahead roadsigns bunched together against cedar shingled wall — Stock Photo
    Curve ahead roadsigns bunched together against cedar shingled wall
    Serious pensive adult male theater artist with makeup and in elegant outfit touching chin and looking at camera while thinking over decision — Stock Photo
    Serious pensive adult male theater artist with makeup and in elegant outfit touching chin and looking at camera while thinking over decision
    Front view of a multi-ethnic group of boy soccer players sitting on a playing field on a sunny day listening to their mixed race male coach during a soccer training session — Stock Photo
    Front view of a multi-ethnic group of boy soccer players sitting on a playing field on a sunny day listening to their mixed race male coach during a soccer training session
    Students on a science lesson — Stock Photo
    Students on a science lesson
    Front view of a multi-ethnic group of teenage school pupils sitting at desks in a classroom and raising their hands — Stock Photo
    Front view of a multi-ethnic group of teenage school pupils sitting at desks in a classroom and raising their hands
    Young ethnic man making grimace doubting face with finger looking at camera wearing trendy denim jacket with floral pattern while standing against gray background — Stock Photo
    Young ethnic man making grimace doubting face with finger looking at camera wearing trendy denim jacket with floral pattern while standing against gray background
    High school students with hands raised, asking questions during lesson in classroom — Stock Photo
    High school students with hands raised, asking questions during lesson in classroom
    Students at a Green Science Fair event. — Stock Photo
    Students at a Green Science Fair event.
    Side view of a multi-ethnic group of boy soccer players sitting a playing field on a sunny day listening to their mixed race male coach during a soccer training session, one boy raising his hand to ask a question — Stock Photo
    Side view of a multi-ethnic group of boy soccer players sitting a playing field on a sunny day listening to their mixed race male coach during a soccer training session, one boy raising his hand to ask a question
    Portrait of young black woman pensive in front of a yellow wall — Stock Photo
    Portrait of young black woman pensive in front of a yellow wall