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    Schoolboy putting leaves on microscope slide in school laboratory. — Stock Photo
    Schoolboy putting leaves on microscope slide in school laboratory.
    Portrait of Caucasian male conservation volunteer cleaning up river in the countryside, his female friend in the background, picking up rubbish. Ecology and social responsibility in rural environment. — Stock Photo
    Portrait of Caucasian male conservation volunteer cleaning up river in the countryside, his female friend in the background, picking up rubbish. Ecology and social responsibility in rural environment.
    Teacher helping junior high school students at desk in classroom — Stock Photo
    Teacher helping junior high school students at desk in classroom
    Female speaker on stage talking to audience — Stock Photo
    Female speaker on stage talking to audience
    Teenage female practicing chemistry experiment in lab — Stock Photo
    Teenage female practicing chemistry experiment in lab
    Boy doing math homework at dining table — Stock Photo
    Boy doing math homework at dining table
    Little kid standing at blackboard in classroom — Stock Photo
    Little kid standing at blackboard in classroom
    Young college students studying together — Stock Photo
    Young college students studying together
    Instructor training students about air conditioning units in HVAC classroom — Stock Photo
    Instructor training students about air conditioning units in HVAC classroom
    College students with books and coffee walking in park — Stock Photo
    College students with books and coffee walking in park
    Woman using computer in classroom — Stock Photo
    Woman using computer in classroom
    Mid section of schoolgirl playing piano in music school — Stock Photo
    Mid section of schoolgirl playing piano in music school
    Junior high school students with backpacks in classroom — Stock Photo
    Junior high school students with backpacks in classroom
    Rear view of group of multi ethnic kids studying while sitting on their desk at school. Primary education social distancing health safety during Covid19 Coronavirus pandemic. — Stock Photo
    Rear view of group of multi ethnic kids studying while sitting on their desk at school. Primary education social distancing health safety during Covid19 Coronavirus pandemic.
    Six year old masked boy starts kindergarten during the pandemic — Stock Photo
    Six year old masked boy starts kindergarten during the pandemic
    University students performing experiment in lab — Stock Photo
    University students performing experiment in lab
    Student in wheelchair studying furnace electronic control system in HVAC classroom — Stock Photo
    Student in wheelchair studying furnace electronic control system in HVAC classroom
    Woman with friends in library — Stock Photo
    Woman with friends in library
    Mid-section of female student playing piano in a studio — Stock Photo
    Mid-section of female student playing piano in a studio
    Male electrician using screwdriver, working at electric panel — Stock Photo
    Male electrician using screwdriver, working at electric panel
    Boy ice-skating on a frozen lake — Stock Photo
    Boy ice-skating on a frozen lake
    Chinese man using laptop in coffee shop — Stock Photo
    Chinese man using laptop in coffee shop
    Boy sittingand using a laptop, looking at the computer screen — Stock Photo
    Boy sittingand using a laptop, looking at the computer screen
    Female teacher helping junior high school students doing homework at desk in classroom — Stock Photo
    Female teacher helping junior high school students doing homework at desk in classroom
    Instructor helping female paramedic using defibrillator training outdoors. — Stock Photo
    Instructor helping female paramedic using defibrillator training outdoors.
    Focused high school girl student taking exam at desk — Stock Photo
    Focused high school girl student taking exam at desk
    Focused female witch reading magic book while sitting on rock near broom in woods — Stock Photo
    Focused female witch reading magic book while sitting on rock near broom in woods
    Little girl learning swimming with instructor in public pool. — Stock Photo
    Little girl learning swimming with instructor in public pool.
    Curious girl examining molecule model in classroom — Stock Photo
    Curious girl examining molecule model in classroom
    Jewelers using equipment in workshop — Stock Photo
    Jewelers using equipment in workshop
    Young college students discussing while standing in library — Stock Photo
    Young college students discussing while standing in library
    Portrait confident young male college student in computer lab — Stock Photo
    Portrait confident young male college student in computer lab
    Woman with down syndrome looking at friend — Stock Photo
    Woman with down syndrome looking at friend
    Boy with blonde hair using a laptop in armchair at home — Stock Photo
    Boy with blonde hair using a laptop in armchair at home
    Side view of 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 man with backpack studying at laptop and writing on a notepad sitting in park grass with crossed legs in sunny day
    Focused young female college student studying in window — Stock Photo
    Focused young female college student studying in window
    Portrait of Caucasian female conservation volunteer cleaning up river in the countryside, her friends picking up rubbish in the background. Ecology and social responsibility in rural environment. — Stock Photo
    Portrait of Caucasian female conservation volunteer cleaning up river in the countryside, her friends picking up rubbish in the background. Ecology and social responsibility in rural environment.
    Junior high school students with hands raised in classroom — Stock Photo
    Junior high school students with hands raised in classroom
    Teacher and children in math class — Stock Photo
    Teacher and children in math class
    Female students performing science experiment — Stock Photo
    Female students performing science experiment
    Teacher working with african american student in classroom — Stock Photo
    Teacher working with african american student in classroom
    School classroom full of pupils — Stock Photo
    School classroom full of pupils
    Female student playing violin in a studio — Stock Photo
    Female student playing violin in a studio
    University student looking at phone at University — Stock Photo
    University student looking at phone at University
    Senior woman working on computer at nursing home — Stock Photo
    Senior woman working on computer at nursing home
    Watercolors on the table, Crafts — Stock Photo
    Watercolors on the table, Crafts
    Side view of two young African schoolboys sitting at a desk working during a lesson in a township elementary school classroom, in the background the teacher is helping some classmates at their desks — Stock Photo
    Side view of two young African schoolboys sitting at a desk working during a lesson in a township elementary school classroom, in the background the teacher is helping some classmates at their desks
    A father and his children cooling off in a hidden swimming hole — Stock Photo
    A father and his children cooling off in a hidden swimming hole
    College students conducting scientific experiment in science laboratory classroom — Stock Photo
    College students conducting scientific experiment in science laboratory classroom
    Cropped image of artist touching bright blue pink colored crumpled soft sheet of paper on table — Stock Photo
    Cropped image of artist touching bright blue pink colored crumpled soft sheet of paper on table
    Father and daughters fishing with sticks at lakeside — Stock Photo
    Father and daughters fishing with sticks at lakeside
    Multi ethnic group of elementary school children sitting at desks wearing face masks in classroom. Primary education social distancing health safety during Covid19 Coronavirus pandemic. — Stock Photo
    Multi ethnic group of elementary school children sitting at desks wearing face masks in classroom. Primary education social distancing health safety during Covid19 Coronavirus pandemic.
    Asian women learning flower arrangement — Stock Photo
    Asian women learning flower arrangement
    Girl in straw hat in a meadow — Stock Photo
    Girl in straw hat in a meadow
    Surprised male community college student using computer in classroom — Stock Photo
    Surprised male community college student using computer in classroom
    Girl at a screen making a presentation — Stock Photo
    Girl at a screen making a presentation
    Young men college students studying at sunny dining table — Stock Photo
    Young men college students studying at sunny dining table
    Young beautiful woman working with laptop in bedroom — Stock Photo
    Young beautiful woman working with laptop in bedroom
    Portrait of a smiling girl standing in the snow — Stock Photo
    Portrait of a smiling girl standing in the snow
    Portrait of university student doing experiment on microscope in laboratory — Stock Photo
    Portrait of university student doing experiment on microscope in laboratory