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    Young male researcher looking at sample under microscope in laboratory. — Stock Photo
    Young male researcher looking at sample under microscope in laboratory.
    Grandfather and grandson cooking and doing homework in kitchen — Stock Photo
    Grandfather and grandson cooking and doing homework in kitchen
    Portrait confident junior high school boy studying in classroom — Stock Photo
    Portrait confident junior high school boy studying in classroom
    Front view of a young African American male fashion student with a tape measure around his neck using a smartphone in a studio at fashion college — Stock Photo
    Front view of a young African American male fashion student with a tape measure around his neck using a smartphone in a studio at fashion college
    Hands of scientist using syringe and petri dish — Stock Photo
    Hands of scientist using syringe and petri dish
    Side view close up of a young African schoolgirl sitting at her 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 schoolgirl sitting at her desk and turning around, looking to camera and smiling during a lesson in a township elementary school classroom.
    Young woman using a laptop in the library — Stock Photo
    Young woman using a laptop in the library
    Graceful Ballet partners dancing together in modern studio — Stock Photo
    Graceful Ballet partners dancing together in modern studio
    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
    Teenage girl wearing headphones, drawing on paper — Stock Photo
    Teenage girl wearing headphones, drawing on paper
    Pre-adolescent girl sleeping on bed with school book. — Stock Photo
    Pre-adolescent girl sleeping on bed with school book.
    Teacher assisting boy — Stock Photo
    Teacher assisting boy
    Student in wheelchair setting up generator experiment while student examines HVAC system — Stock Photo
    Student in wheelchair setting up generator experiment while student examines HVAC system
    Young man touching using digital tablet — Stock Photo
    Young man touching using digital tablet
    Attentive university students doing a experiment in laboratory — Stock Photo
    Attentive university students doing a experiment in laboratory
    Attentive university student doing a chemical experiment in laboratory — Stock Photo
    Attentive university student doing a chemical experiment in laboratory
    Mother helping daughter with homework — Stock Photo
    Mother helping daughter with homework
    University professor with Muscular Dystrophy teaching students in a classroom — Stock Photo
    University professor with Muscular Dystrophy teaching students in a classroom
    Young asian college students studying together — Stock Photo
    Young asian college students studying together
    Boy and girl using digital tablet — Stock Photo
    Boy and girl using digital tablet
    Ten year-old bi-racial girl working on her ipad while lying on sofa — Stock Photo
    Ten year-old bi-racial girl working on her ipad while lying on sofa
    Male teacher teaching students in the class at school — Stock Photo
    Male teacher teaching students in the class at school
    Teacher and Young Students — Stock Photo
    Teacher and Young Students
    Young college student roommates studying at kitchen table in apartment — Stock Photo
    Young college student roommates studying at kitchen table in apartment
    Thoughtful little child at school — Stock Photo
    Thoughtful little child at school
    Smiling boy reading book — Stock Photo
    Smiling boy reading book
    Close-up of young elegant woman in eyeglasses with book looking at camera — Stock Photo
    Close-up of young elegant woman in eyeglasses with book looking at camera
    Young elegant woman in eyeglasses with book sitting on bench in city park — Stock Photo
    Young elegant woman in eyeglasses with book sitting on bench in city park
    Public library, modern interior with shelves of books — Stock Photo
    Public library, modern interior with shelves of books
    Side view close up of two young African schoolgirls sitting at a desk using a smartphone together and smiling in a classroom at a township elementary school. — Stock Photo
    Side view close up of two young African schoolgirls sitting at a desk using a smartphone together and smiling in a classroom at a township elementary school.
    Student writing on adhesive note in book — Stock Photo
    Student writing on adhesive note in book
    Young elegant woman in eyeglasses reading book and sitting on stairs — Stock Photo
    Young elegant woman in eyeglasses reading book and sitting on stairs
    Side view of Ballerina holding bar in studio — Stock Photo
    Side view of Ballerina holding bar in studio
    Students in a computer lab — Stock Photo
    Students in a computer lab
    University student raising hand in classroom at university — Stock Photo
    University student raising hand in classroom at university
    Front view of a young Caucasian female fashion student holding and speaking on a smartphone and using a computer in a studio at fashion college, with a student working in the background — Stock Photo
    Front view of a young Caucasian female fashion student holding and speaking on a smartphone and using a computer in a studio at fashion college, with a student working in the background
    Young woman picking up a book from the bookshelf in library — Stock Photo
    Young woman picking up a book from the bookshelf in library
    Chinese primary school students writing during class in rural school — Stock Photo
    Chinese primary school students writing during class in rural school
    Portrait confident high school girl student taking notes during geography lesson in classroom — Stock Photo
    Portrait confident high school girl student taking notes during geography lesson in classroom
    Archaeologist measuring ancient loom weights on digital scale in laboratory. — Stock Photo
    Archaeologist measuring ancient loom weights on digital scale in laboratory.
    Female freelancer working at laptop, writing on paperwork in living room — Stock Photo
    Female freelancer working at laptop, writing on paperwork in living room
    Woman using copy machine in library — Stock Photo
    Woman using copy machine in library
    Girl drawing bar graph — Stock Photo
    Girl drawing bar graph
    Girl watching classmate drawing — Stock Photo
    Girl watching classmate drawing
    Man using mobile phone with laptop at bed. — Stock Photo
    Man using mobile phone with laptop at bed.
    Kids studying on the table at home — Stock Photo
    Kids studying on the table at home
    Toddler girl drawing with color pencils at home. — Stock Photo
    Toddler girl drawing with color pencils at home.
    Community college instructor helping mature student in classroom — Stock Photo
    Community college instructor helping mature student in classroom
    Chinese siblings studying together at table — Stock Photo
    Chinese siblings studying together at table
    Teenage girl using laptop in classroom at university — Stock Photo
    Teenage girl using laptop in classroom at university
    Portrait confident, smiling female community college students with paperwork in classroom — Stock Photo
    Portrait confident, smiling female community college students with paperwork in classroom
    Junior high students using computer in computer lab — Stock Photo
    Junior high students using computer in computer lab
    Side view of college students studying at desk in classroom — Stock Photo
    Side view of college students studying at desk in classroom
    Junior high school student using digital tablet in classroom — Stock Photo
    Junior high school student using digital tablet in classroom
    Teenage friends sitting on steps — Stock Photo
    Teenage friends sitting on steps
    Young students studying in classroom — Stock Photo
    Young students studying in classroom
    Low angle view of Ballerina in dark tutu dancing in studio — Stock Photo
    Low angle view of Ballerina in dark tutu dancing in studio
    Female scientist in white coat taking notes in soil testing laboratory. — Stock Photo
    Female scientist in white coat taking notes in soil testing laboratory.
    Young friends hanging out and studying at sidewalk cafe — Stock Photo
    Young friends hanging out and studying at sidewalk cafe
    Teenage girl writing outside on terrace at sunset. — Stock Photo
    Teenage girl writing outside on terrace at sunset.