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    Girl sitting in her bedroom doing her homework — Stock Photo
    Girl sitting in her bedroom doing her homework
    Woman using laptop in library room — Stock Photo
    Woman using laptop in library room
    Girl experimenting with microscope at home — Stock Photo
    Girl experimenting with microscope at home
    Young women in hijabs talking outside sunny building — Stock Photo
    Young women in hijabs talking outside sunny building
    Students programming at computer in computer lab classroom — Stock Photo
    Students programming at computer in computer lab classroom
    Junior high school students pointing at globe in geography teacher hands — Stock Photo
    Junior high school students pointing at globe in geography teacher hands
    Happy young asian family together reading book at bedroom — Stock Photo
    Happy young asian family together reading book at bedroom
    Funny boy reading book — Stock Photo
    Funny boy reading book
    Elevated side view close up of a young African schoolgirl and two schoolboys sitting at a desks listening during a lesson in a township elementary school classroom — Stock Photo
    Elevated side view close up of a young African schoolgirl and two schoolboys sitting at a desks listening during a lesson in a township elementary school classroom
    Male anatomy showing Zygomaticus major muscle, computer illustration. — Stock Photo
    Male anatomy showing Zygomaticus major muscle, computer illustration.
    Side view of pensive stylish African American woman in yellow hat and warm jacket comfortable sitting on wooden bench and reading book in autumn park — Stock Photo
    Side view of pensive stylish African American woman in yellow hat and warm jacket comfortable sitting on wooden bench and reading book in autumn park
    Female speaker in hijab on stage talking to audience — Stock Photo
    Female speaker in hijab on stage talking to audience
    Male skeleton leg with visible femur bone, computer illustration. — Stock Photo
    Male skeleton leg with visible femur bone, computer illustration.
    Illustration of senior woman silhouette showing larynx on black background. — Stock Photo
    Illustration of senior woman silhouette showing larynx on black background.
    Illustration of feet bones in human skeleton on blue background. — Stock Photo
    Illustration of feet bones in human skeleton on blue background.
    Female anatomy showing kidneys and bladder connection, computer illustration. — Stock Photo
    Female anatomy showing kidneys and bladder connection, computer illustration.
    Cheerful classmates in school uniform looking at view — Stock Photo
    Cheerful classmates in school uniform looking at view
    Teenage girl sitting on bed at home and studying — Stock Photo
    Teenage girl sitting on bed at home and studying
    Teen jockeys in helmets communicating with each other while riding obedient horses on sandy dressage arena during lesson in equestrian school — Stock Photo
    Teen jockeys in helmets communicating with each other while riding obedient horses on sandy dressage arena during lesson in equestrian school
    Illustration of colored larynx in transparent human body. — Stock Photo
    Illustration of colored larynx in transparent human body.
    Side view close up of a young African schoolboy sitting at his desk and turning around, looking to camera and smiling during a lesson in a township elementary school classroom. — Stock Photo
    Side view close up of a young African schoolboy sitting at his desk and turning around, looking to camera and smiling during a lesson in a township elementary school classroom.
    Illustration of liver in transparent male silhouette. — Stock Photo
    Illustration of liver in transparent male silhouette.
    Myanmar (Burma), Mandalay Region, Taungtha, Taung Ba, Mandalay Province, Taung Ba Primary School — Stock Photo
    Myanmar (Burma), Mandalay Region, Taungtha, Taung Ba, Mandalay Province, Taung Ba Primary School
    Girl drawing with felt tip pens. — Stock Photo
    Girl drawing with felt tip pens.
    Boys learning together — Stock Photo
    Boys learning together
    Thoughtful young male student — Stock Photo
    Thoughtful young male student
    Front view of multi-ethnic group of teenagers in a high school classroom sitting at desks, all raising their hands to answer a question — Stock Photo
    Front view of multi-ethnic group of teenagers in a high school classroom sitting at desks, all raising their hands to answer a question
    Male anatomy showing Peroneus longus muscle, computer illustration. — Stock Photo
    Male anatomy showing Peroneus longus muscle, computer illustration.
    Instructor demonstrating air conditioner control system on demo board to students in HVAC classroom one student in wheelchair — Stock Photo
    Instructor demonstrating air conditioner control system on demo board to students in HVAC classroom one student in wheelchair
    Cropped view of hands of man writing in book with female classmate in background — Stock Photo
    Cropped view of hands of man writing in book with female classmate in background
    Abstract male silhouette with colored scapula bones, computer illustration. — Stock Photo
    Abstract male silhouette with colored scapula bones, computer illustration.
    Attractive concentrated teenage female student taking notes for exam and drinking hot beverage while sitting on bed — Stock Photo
    Attractive concentrated teenage female student taking notes for exam and drinking hot beverage while sitting on bed
    Man with spinal cord injury in an adaptive cart at golf putting green with an instructor — Stock Photo
    Man with spinal cord injury in an adaptive cart at golf putting green with an instructor
    Cute girl at home drawing — Stock Photo
    Cute girl at home drawing
    Cropped image of pregnant woman in white home clothes reading book while sitting with crossed legs on bed in bright room — Stock Photo
    Cropped image of pregnant woman in white home clothes reading book while sitting with crossed legs on bed in bright room
    Businesswoman and son outside urban building — Stock Photo
    Businesswoman and son outside urban building
    Young woman using tablet computer while studying at desk with classmates at desk in classroom — Stock Photo
    Young woman using tablet computer while studying at desk with classmates at desk in classroom
    Male students in cooking class kitchen — Stock Photo
    Male students in cooking class kitchen
    Woman lying on volcanic beach and reading book, Paros, Aegean Sea, Cyclades, Greece — Stock Photo
    Woman lying on volcanic beach and reading book, Paros, Aegean Sea, Cyclades, Greece
    Students using mobile phone on steps — Stock Photo
    Students using mobile phone on steps
    Audience on conference hall, business meeting and people concept — Stock Photo
    Audience on conference hall, business meeting and people concept
    Cute blond girl in warm sweater leaning on hand and looking at babysitter showing craft of woolen thread in modern kindergarten — Stock Photo
    Cute blond girl in warm sweater leaning on hand and looking at babysitter showing craft of woolen thread in modern kindergarten
    Happy multi-ethnic friends — Stock Photo
    Happy multi-ethnic friends
    Teacher and Young Students — Stock Photo
    Teacher and Young Students
    Illustration of primordial solar nebula surrounding newborn star. — Stock Photo
    Illustration of primordial solar nebula surrounding newborn star.
    Guitar lying in front of bored boy doing homework at desk in bedroom — Stock Photo
    Guitar lying in front of bored boy doing homework at desk in bedroom
    Anatomy of human skeleton back bones, computer illustration. — Stock Photo
    Anatomy of human skeleton back bones, computer illustration.
    3d rendered illustration of knee in human skeleton. — Stock Photo
    3d rendered illustration of knee in human skeleton.
    High angle view of a multi-ethnic group of teenage school pupils sitting and standing around a table in a classroom looking at laptop and tablet computers together and talking at break time — Stock Photo
    High angle view of a multi-ethnic group of teenage school pupils sitting and standing around a table in a classroom looking at laptop and tablet computers together and talking at break time
    Illustration of larynx in transparent male silhouette. — Stock Photo
    Illustration of larynx in transparent male silhouette.
    GRADUATE LOOKS TOWARD THE FUTURE — Stock Photo
    GRADUATE LOOKS TOWARD THE FUTURE
    Illustration of senior woman blue silhouette with highlighted lungs on black background. — Stock Photo
    Illustration of senior woman blue silhouette with highlighted lungs on black background.
    Elegant woman preparing daughter for school — Stock Photo
    Elegant woman preparing daughter for school
    Illustration of elbow joint in human skeleton on blue background. — Stock Photo
    Illustration of elbow joint in human skeleton on blue background.
    Side view of a teenage Caucasian girl in a school classroom sitting at her desk with her head on her arms, sleeping, with teenage male and female classmates sitting at desks working in the background — Stock Photo
    Side view of a teenage Caucasian girl in a school classroom sitting at her desk with her head on her arms, sleeping, with teenage male and female classmates sitting at desks working in the background
    Smiling, enthusiastic man clapping in audience — Stock Photo
    Smiling, enthusiastic man clapping in audience
    Male teacher teaching students in the classroom at school — Stock Photo
    Male teacher teaching students in the classroom at school
    Portrait close up of a young African schoolgirl wearing her school uniform and schoolbag, looking straight to camera smiling, at a township elementary school — Stock Photo
    Portrait close up of a young African schoolgirl wearing her school uniform and schoolbag, looking straight to camera smiling, at a township elementary school
    Chinese children exploring tree trunk in woods — Stock Photo
    Chinese children exploring tree trunk in woods
    Curious kids at interactive globe exhibit in science center — Stock Photo
    Curious kids at interactive globe exhibit in science center