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    Teenage girl practicing chemistry experiment in lab — Stock Photo
    Teenage girl practicing chemistry experiment in lab
    Happy boy writing at desk — Stock Photo
    Happy boy writing at desk
    Side view of concentrated man with backpack studying at laptop and writing on a notepad sitting in park grass with crossed legs in sunny day — Stock Photo
    Side view of concentrated man with backpack studying at laptop and writing on a notepad sitting in park grass with crossed legs in sunny day
    Portrait confident happy high school boy in corridor — Stock Photo
    Portrait confident happy high school boy in corridor
    Stylish guitarist on couch in living room — Stock Photo
    Stylish guitarist on couch in living room
    Girls learning in classroom with tablets — Stock Photo
    Girls learning in classroom with tablets
    Girls looking at field — Stock Photo
    Girls looking at field
    Students and teacher examining globe in classroom — Stock Photo
    Students and teacher examining globe in classroom
    College students walking in park — Stock Photo
    College students walking in park
    Close-up of prayer beads kept on holy Quran — Stock Photo
    Close-up of prayer beads kept on holy Quran
    Front view of an male Caucasian teacher standing and talking to a Caucasian male student in a multi-ethnic class of teenagers in a high school classroom sitting at desks and working — Stock Photo
    Front view of an male Caucasian teacher standing and talking to a Caucasian male student in a multi-ethnic class of teenagers in a high school classroom sitting at desks and working
    3d illustration of three metal stents for implantation into blood vessels. — Stock Photo
    3d illustration of three metal stents for implantation into blood vessels.
    Illustration of stomach in human body silhouette. — Stock Photo
    Illustration of stomach in human body silhouette.
    Teacher assisting university students in their studies in classroom — Stock Photo
    Teacher assisting university students in their studies in classroom
    Girl rubbing out homework — Stock Photo
    Girl rubbing out homework
    Female anatomical model with yellow colored and visible lungs, computer illustration. — Stock Photo
    Female anatomical model with yellow colored and visible lungs, computer illustration.
    Portrait of cute little girl holding hand of parent — Stock Photo
    Portrait of cute little girl holding hand of parent
    Confident high school boy student giving presentation in classroom — Stock Photo
    Confident high school boy student giving presentation in classroom
    Chinese school students studying with textbooks in rural primary school — Stock Photo
    Chinese school students studying with textbooks in rural primary school
    Caucasian girl sitting at desk wearing face mask in classroom, covering her face while sneezing. Primary education social distancing health safety during Covid19 Coronavirus pandemic. — Stock Photo
    Caucasian girl sitting at desk wearing face mask in classroom, covering her face while sneezing. Primary education social distancing health safety during Covid19 Coronavirus pandemic.
    Female artist screen printing in art studio — Stock Photo
    Female artist screen printing in art studio
    Close-up of teenage girl writing on blackboard in a classroom — Stock Photo
    Close-up of teenage girl writing on blackboard in a classroom
    Side view close up of a Caucasian teenage boy sitting alone in a schoolyard wearing headphones and looking at a smartphone — Stock Photo
    Side view close up of a Caucasian teenage boy sitting alone in a schoolyard wearing headphones and looking at a smartphone
    Smiling female students sitting on sofa with notebook and taking self portrait on mobile phone during break — Stock Photo
    Smiling female students sitting on sofa with notebook and taking self portrait on mobile phone during break
    Junior high students hanging out, talking — Stock Photo
    Junior high students hanging out, talking
    Students with Down Syndrome using stand mixer in baking class — Stock Photo
    Students with Down Syndrome using stand mixer in baking class
    Male silhouette with visible upper body bones, computer illustration. — Stock Photo
    Male silhouette with visible upper body bones, computer illustration.
    Young father and cute baby reading colorful childrens book while sitting at table near cropped unrecognizable mother working from home on netbook — Stock Photo
    Young father and cute baby reading colorful childrens book while sitting at table near cropped unrecognizable mother working from home on netbook
    Closeup view of Spectacles on a book on wooden table — Stock Photo
    Closeup view of Spectacles on a book on wooden table
    Friend holding water bottle to teenage girl?s forehead, cooling down in dance class studio — Stock Photo
    Friend holding water bottle to teenage girl?s forehead, cooling down in dance class studio
    Young female classmates in casual wear standing close while talking about studying in corridor of university — Stock Photo
    Young female classmates in casual wear standing close while talking about studying in corridor of university
    Beautiful woman reading book in library — Stock Photo
    Beautiful woman reading book in library
    Positive mother in casual red clothes sitting at table with kids and playing with plasticine while spending time at home — Stock Photo
    Positive mother in casual red clothes sitting at table with kids and playing with plasticine while spending time at home
    Young female sipping hot drink and reading book while studying in evening at home — Stock Photo
    Young female sipping hot drink and reading book while studying in evening at home
    Mother and daughter fixing the robotic toy at home — Stock Photo
    Mother and daughter fixing the robotic toy at home
    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
    Low angle view of library with sign — Stock Photo
    Low angle view of library with sign
    Happy young man using laptop in cafe — Stock Photo
    Happy young man using laptop in cafe
    Student holding painting in class — Stock Photo
    Student holding painting in class
    Young man reading a book in library — Stock Photo
    Young man reading a book in library
    Teacher watching curious students playing with beakers at interactive exhibit in science center — Stock Photo
    Teacher watching curious students playing with beakers at interactive exhibit in science center
    Students taking a self portrait on the school stairs — Stock Photo
    Students taking a self portrait on the school stairs
    Female silhouette with detailed liver on blue background, computer illustration. — Stock Photo
    Female silhouette with detailed liver on blue background, computer illustration.
    High school teacher supervising students taking exam at desks — Stock Photo
    High school teacher supervising students taking exam at desks
    Woman using digital tablet in community center — Stock Photo
    Woman using digital tablet in community center
    From above set of cute rubber ducklings and duck mom toys placed on bright yellow background — Stock Photo
    From above set of cute rubber ducklings and duck mom toys placed on bright yellow background
    Illustration of senior woman blue silhouette with highlighted small intestine on white background. — Stock Photo
    Illustration of senior woman blue silhouette with highlighted small intestine on white background.
    Orange colored lungs in male body silhouette, computer illustration. — Stock Photo
    Orange colored lungs in male body silhouette, computer illustration.
    Female audiologist putting headphones on boy having hearing test. — Stock Photo
    Female audiologist putting headphones on boy having hearing test.
    Chef teacher preparing with clipboard in cooking class kitchen — Stock Photo
    Chef teacher preparing with clipboard in cooking class kitchen
    Front view of a teenage mixed-race boy in a school classroom sitting at desk, raising his hand to answer a question, with teenage male and female classmates sitting at desks working in the background — Stock Photo
    Front view of a teenage mixed-race boy in a school classroom sitting at desk, raising his hand to answer a question, with teenage male and female classmates sitting at desks working in the background
    Teenage girl using laptop computer while sitting in classroom — Stock Photo
    Teenage girl using laptop computer while sitting in classroom
    Children using digital tablet — Stock Photo
    Children using digital tablet
    Abstract male silhouette with visible upper skeletal body, computer illustration. — Stock Photo
    Abstract male silhouette with visible upper skeletal body, computer illustration.
    Junior high students descending stairs — Stock Photo
    Junior high students descending stairs
    Boy coloring shapes with colorful pens for developmental psychology test in female doctor office. — Stock Photo
    Boy coloring shapes with colorful pens for developmental psychology test in female doctor office.
    Cheerful classmates in school uniform posing on street — Stock Photo
    Cheerful classmates in school uniform posing on street
    Young students in graduation gowns cycling — Stock Photo
    Young students in graduation gowns cycling
    Desks and chairs in University Library of Slovenia, Ljubljana, Central Slovenia, Slovenia — Stock Photo
    Desks and chairs in University Library of Slovenia, Ljubljana, Central Slovenia, Slovenia
    Side view of young man with cup of coffee writing in notepad while sitting at table behind glass and studying in cafeteria — Stock Photo
    Side view of young man with cup of coffee writing in notepad while sitting at table behind glass and studying in cafeteria