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    Male instructor leading lesson at projection screen in classroom — Stock Photo
    Male instructor leading lesson at projection screen in classroom
    Grandfather and grandson playing chess in the garden — Stock Photo
    Grandfather and grandson playing chess in the garden
    RELEASES Happy asian family drawing calligraphy hieroglyphs — Stock Photo
    RELEASES Happy asian family drawing calligraphy hieroglyphs
    Young girl curled up on a chair looking tired holding her toy at home — Stock Photo
    Young girl curled up on a chair looking tired holding her toy at home
    Junior high students using computers in computer lab — Stock Photo
    Junior high students using computers in computer lab
    Community college journalism students at microphone in classroom — Stock Photo
    Community college journalism students at microphone in classroom
    Company of men learning during workshop — Stock Photo
    Company of men learning during workshop
    College students walking and talking in corridor — Stock Photo
    College students walking and talking in corridor
    Portrait confident male high school teacher in classroom — Stock Photo
    Portrait confident male high school teacher in classroom
    Portrait excited junior high students cheering — Stock Photo
    Portrait excited junior high students cheering
    RELEASES Happy asian family together, grandfather and grandchildren drawing hieroglyphs — Stock Photo
    RELEASES Happy asian family together, grandfather and grandchildren drawing hieroglyphs
    Female community college instructor helping student at computer in computer lab classroom — Stock Photo
    Female community college instructor helping student at computer in computer lab classroom
    Mother and daughter cuddling whilst playing the guitar at home — Stock Photo
    Mother and daughter cuddling whilst playing the guitar at home
    Students conducting scientific experiment, pouring liquid in beaker in laboratory classroom — Stock Photo
    Students conducting scientific experiment, pouring liquid in beaker in laboratory classroom
    Junior high teacher helping boy student at computer — Stock Photo
    Junior high teacher helping boy student at computer
    Attentive woman listening in conference audience — Stock Photo
    Attentive woman listening in conference audience
    A young girl sitting alone and eating pizza — Stock Photo
    A young girl sitting alone and eating pizza
    Little Chinese girl stands on some books — Stock Photo
    Little Chinese girl stands on some books
    Young female college student using smart phone — Stock Photo
    Young female college student using smart phone
    55658 — Stock Photo
    55658
    Happy high school girl students studying in corridor — Stock Photo
    Happy high school girl students studying in corridor
    Portrait confident young male college student studying at cafe table — Stock Photo
    Portrait confident young male college student studying at cafe table
    Junior high students talking at stairs — Stock Photo
    Junior high students talking at stairs
    Audience on conference hall, business meeting and people concept — Stock Photo
    Audience on conference hall, business meeting and people concept
    Portrait confident junior high girl student studying in corridor — Stock Photo
    Portrait confident junior high girl student studying in corridor
    High school students clapping for classmate in debate class — Stock Photo
    High school students clapping for classmate in debate class
    Community college students watching instructor leading lesson in classroom — Stock Photo
    Community college students watching instructor leading lesson in classroom
    3 years cute little boy with paint roller in hand — Stock Photo
    3 years cute little boy with paint roller in hand
    College students studying and talking at library table — Stock Photo
    College students studying and talking at library table
    Father and son reading book at home — Stock Photo
    Father and son reading book at home
    Portrait confident young man with arms crossed outside sunny building — Stock Photo
    Portrait confident young man with arms crossed outside sunny building
    High school students taking exam at desks in classroom — Stock Photo
    High school students taking exam at desks in classroom
    Audience on conference hall, business meeting and people concept — Stock Photo
    Audience on conference hall, business meeting and people concept
    Audience using camera phones — Stock Photo
    Audience using camera phones
    View of Conference audience clapping — Stock Photo
    View of Conference audience clapping
    High school teacher helping students studying in classroom — Stock Photo
    High school teacher helping students studying in classroom
    Audience listening to male speaker on stage — Stock Photo
    Audience listening to male speaker on stage
    Audience talking to speakers in wheelchairs on stage — Stock Photo
    Audience talking to speakers in wheelchairs on stage
    Beautiful young woman making notes at home — Stock Photo
    Beautiful young woman making notes at home
    Cropped unrecognizable female in stylish clothes sitting with opened book on wooden bench against building with light wall in daytime — Stock Photo
    Cropped unrecognizable female in stylish clothes sitting with opened book on wooden bench against building with light wall in daytime
    Chef teaching students with Down Syndrome how to knead dough — Stock Photo
    Chef teaching students with Down Syndrome how to knead dough
    Areal view of young girl sat on a chair looking up at home reading — Stock Photo
    Areal view of young girl sat on a chair looking up at home reading
    College students studying in classroom — Stock Photo
    College students studying in classroom
    Focused boy home schooling at table — Stock Photo
    Focused boy home schooling at table
    Students examining DNA model in classroom laboratory — Stock Photo
    Students examining DNA model in classroom laboratory
    Female community college instructor helping student at computer in computer lab — Stock Photo
    Female community college instructor helping student at computer in computer lab
    Close-up of two girls whispering in a school — Stock Photo
    Close-up of two girls whispering in a school
    Man training his dog in the snow — Stock Photo
    Man training his dog in the snow
    Young girl holding a small birds egg in her hands — Stock Photo
    Young girl holding a small birds egg in her hands
    Young male student with Down Syndrome baking bread in kitchen — Stock Photo
    Young male student with Down Syndrome baking bread in kitchen
    Junior high students talking at stairs — Stock Photo
    Junior high students talking at stairs
    Community college instructor helping students with paperwork in classroom — Stock Photo
    Community college instructor helping students with paperwork in classroom
    Pensive African American female student with thermos and bunch of textbooks looking at camera while standing on street near university building — Stock Photo
    Pensive African American female student with thermos and bunch of textbooks looking at camera while standing on street near university building
    Boy sittingand using a laptop, looking at the computer screen — Stock Photo
    Boy sittingand using a laptop, looking at the computer screen
    College students talking and studying in classroom — Stock Photo
    College students talking and studying in classroom
    Female teacher and curious girl students examining molecular structure in laboratory classroom — Stock Photo
    Female teacher and curious girl students examining molecular structure in laboratory classroom
    Curious girl student holding molecule model in classroom — Stock Photo
    Curious girl student holding molecule model in classroom
    Focused junior high boy student listening to friends in corridor — Stock Photo
    Focused junior high boy student listening to friends in corridor
    Portrait smiling young woman with smart phone on urban sidewalk — Stock Photo
    Portrait smiling young woman with smart phone on urban sidewalk
    Community college instructor helping students with headphones using computers in computer lab — Stock Photo
    Community college instructor helping students with headphones using computers in computer lab