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    Globe in the empty classroom at school — Stock Photo
    Globe in the empty classroom at school
    Teacher and students at interactive exhibit in science center — Stock Photo
    Teacher and students at interactive exhibit in science center
    Illustration of larynx cancer in male body silhouette on black background. — Stock Photo
    Illustration of larynx cancer in male body silhouette on black background.
    Art students and instructor discussing painting in art class studio — Stock Photo
    Art students and instructor discussing painting in art class studio
    Audience on conference hall, business meeting and people concept — Stock Photo
    Audience on conference hall, business meeting and people concept
    Smiling girl students researching at computer in laboratory classroom — Stock Photo
    Smiling girl students researching at computer in laboratory classroom
    Instructor training students about air conditioning units in HVAC classroom — Stock Photo
    Instructor training students about air conditioning units in HVAC classroom
    Female student reading book — Stock Photo
    Female student reading book
    Happy mature female teacher sitting at school desk — Stock Photo
    Happy mature female teacher sitting at school desk
    Close-up of a man assisting his son in using a laptop — Stock Photo
    Close-up of a man assisting his son in using a laptop
    Female paramedic defibrillator training with dummy outdoors. — Stock Photo
    Female paramedic defibrillator training with dummy outdoors.
    Girl sitting on the floor in her bedroom doing homework — Stock Photo
    Girl sitting on the floor in her bedroom doing homework
    University students with luggage walking on city street — Stock Photo
    University students with luggage walking on city street
    Transparent male silhouette with colored lungs, computer illustration. — Stock Photo
    Transparent male silhouette with colored lungs, computer illustration.
    Male teacher and students conducting scientific experiment in laboratory classroom — Stock Photo
    Male teacher and students conducting scientific experiment in laboratory classroom
    Friends preparing zip line equipment — Stock Photo
    Friends preparing zip line equipment
    Front view close up of a young African schoolgirl standing at the front of class smiling and pointing to a map during a lesson in a township elementary school classroom — Stock Photo
    Front view close up of a young African schoolgirl standing at the front of class smiling and pointing to a map during a lesson in a township elementary school classroom
    Grandmother and granddaughter interacting with each other at home — Stock Photo
    Grandmother and granddaughter interacting with each other at home
    Swimming instructor having fun with group of little children in swimming pool. — Stock Photo
    Swimming instructor having fun with group of little children in swimming pool.
    Blue pencil, on light yellow and orange geometric background, back to school concept — Stock Photo
    Blue pencil, on light yellow and orange geometric background, back to school concept
    Mother helping daughter with homework while sitting at table with notebook and studying at home — Stock Photo
    Mother helping daughter with homework while sitting at table with notebook and studying at home
    Positive young female freelancer in casual clothes sitting with legs crossed on bed and typing on laptop while working on remote project at home — Stock Photo
    Positive young female freelancer in casual clothes sitting with legs crossed on bed and typing on laptop while working on remote project at home
    Young female student using laptop while studying at desk in classroom — Stock Photo
    Young female student using laptop while studying at desk in classroom
    Side view of crop male doctor in blue uniform and gloves writing on flip chart while explaining theory during lesson in dentistry course — Stock Photo
    Side view of crop male doctor in blue uniform and gloves writing on flip chart while explaining theory during lesson in dentistry course
    High angle view of a group of a diverse group of fashion students working on designs in a studio at fashion college — Stock Photo
    High angle view of a group of a diverse group of fashion students working on designs in a studio at fashion college
    Schoolboy using glassware and equipment in school laboratory. — Stock Photo
    Schoolboy using glassware and equipment in school laboratory.
    Close-up of light microscope lenses on white background. — Stock Photo
    Close-up of light microscope lenses on white background.
    Teenage friends using smart phone outside sunny school building — Stock Photo
    Teenage friends using smart phone outside sunny school building
    Colored large intestine in female body silhouette, digital illustration. — Stock Photo
    Colored large intestine in female body silhouette, digital illustration.
    Anonymous African American female freelancer with braids and white netbook standing in street in Barcelona and looking at camera — Stock Photo
    Anonymous African American female freelancer with braids and white netbook standing in street in Barcelona and looking at camera
    Human brain limbic system, digital illustration. — Stock Photo
    Human brain limbic system, digital illustration.
    Front view of an African American man at home, sitting at a table with his young daughter looking at a laptop computer together, a schoolbook on the table in front of her, with the mother standing in the kitchen in the background — Stock Photo
    Front view of an African American man at home, sitting at a table with his young daughter looking at a laptop computer together, a schoolbook on the table in front of her, with the mother standing in the kitchen in the background
    Young elegant woman in eyeglasses leaning on stone wall with book and looking at camera — Stock Photo
    Young elegant woman in eyeglasses leaning on stone wall with book and looking at camera
    Beautiful woman reading book in library — Stock Photo
    Beautiful woman reading book in library
    3d rendered illustration of human knee on white background. — Stock Photo
    3d rendered illustration of human knee on white background.
    Teenage girl studying in computer classroom at university — Stock Photo
    Teenage girl studying in computer classroom at university
    Crop unrecognizable student holding denture and a pencil while sitting at table during dentistry class — Stock Photo
    Crop unrecognizable student holding denture and a pencil while sitting at table during dentistry class
    Female upper body musculature, computer illustration. — Stock Photo
    Female upper body musculature, computer illustration.
    Tired man using laptop computer lying on bed at home — Stock Photo
    Tired man using laptop computer lying on bed at home
    High angle close-up of artist drawing hand in art class. — Stock Photo
    High angle close-up of artist drawing hand in art class.
    Rear view of man sitting at desk working on computer — Stock Photo
    Rear view of man sitting at desk working on computer
    Children on morning prayer — Stock Photo
    Children on morning prayer
    Junior high school students pointing at globe in geography teacher hands — Stock Photo
    Junior high school students pointing at globe in geography teacher hands
    Portrait of young woman holding a book in library — Stock Photo
    Portrait of young woman holding a book in library
    High school teacher supervising students taking exam at desks — Stock Photo
    High school teacher supervising students taking exam at desks
    6 year old boy playing violin outside of his home — Stock Photo
    6 year old boy playing violin outside of his home
    Kids playing in science center — Stock Photo
    Kids playing in science center
    I love Los Angeles snow globe on a shelf — Stock Photo
    I love Los Angeles snow globe on a shelf
    Chinese boy doing homework and smiling at camera while parents sitting on sofa behind — Stock Photo
    Chinese boy doing homework and smiling at camera while parents sitting on sofa behind
    Abstract male shoulder bones, computer illustration. — Stock Photo
    Abstract male shoulder bones, computer illustration.
    Smiling teenagers studying — Stock Photo
    Smiling teenagers studying
    Man and little girl standing in the kitchen, reading exercise book — Stock Photo
    Man and little girl standing in the kitchen, reading exercise book
    Medical illustration of visible spleen in human body. — Stock Photo
    Medical illustration of visible spleen in human body.
    Illustration of human spleen in body silhouette. — Stock Photo
    Illustration of human spleen in body silhouette.
    Illustration of human thyroid gland in body silhouette. — Stock Photo
    Illustration of human thyroid gland in body silhouette.
    Art students working in art studio — Stock Photo
    Art students working in art studio
    Male anatomy showing Gluteus minimus muscle, computer illustration. — Stock Photo
    Male anatomy showing Gluteus minimus muscle, computer illustration.
    Female anatomical model with yellow colored and visible lungs, computer illustration. — Stock Photo
    Female anatomical model with yellow colored and visible lungs, computer illustration.
    Female paramedic CPR training on dummy outdoors. — Stock Photo
    Female paramedic CPR training on dummy outdoors.
    Side view of a Caucasian male high school teacher, standing and talking with a teenage Caucasian girl in a school classroom sitting a desk, with teenage classmates sitting at desks working in the background — Stock Photo
    Side view of a Caucasian male high school teacher, standing and talking with a teenage Caucasian girl in a school classroom sitting a desk, with teenage classmates sitting at desks working in the background