Knowledge
Cute girl listening music on headphones at home
Midsection of lawyer gesturing against black background
Rear view of girl standing by blackboard in classroom
Cropped hand of person holding frog
Female student leaning over table while friends sitting in classroom
Cropped image of man reading book while sitting at home
Teenage students discussing over book while sitting together at table in house
Young woman looking away while standing against trees during autumn
Businessman picking wooden block fail danger tower hands playing challenge game
Portrait of couple holding hands
Smiling daughter looking at mother cutting plank with hand saw against house
Empty corridor in library
Midsection of female architect using drawing compass on blueprint at desk
Portrait of young woman sitting on bed
Portrait of young woman standing on road in city
Toddler baby girl in funny hat with ears having fun
Girl studying on grassy field
Woman looking at sea
Silhouettes of anonymous scientists using telescopes while exploring night starry sky with milky way in darkness
Young woman holding book while standing on ladder in library
Rear view of man playing with ball
Young woman reading book amidst shelves in library
Close-up of hand holding chili and garlic
Close-up of girl writing in book on bench
Rear view of boy skiing on snow covered land
Woman working writing notes outdoor. middle age female student outdoor writing studying learning
Smiling teenage boy showing laptop to friends while studying at table
Midsection of lawyer standing against black background
Cheerful girl holding book on head while standing by blackboard
Portrait of monk standing against elephant in forest
Full length of man on arid landscape against sky
High angle view of happy teenage boy taking selfie while studying in living room at home
Rear view of woman relaxing on beach
Cropped hands of woman painting
Close-up of open book against lake
Rear view of businessman against colorful adhesive notes on wall in office
Cheerful friends discussing while studying together at table
Male and female hands draw symbols of masculine feminine principle with chalk on the blackboard.
Young girl sitting on ground fishing from creek bank during summer
Midsection of woman playing piano
Young woman sitting reading a book at nature in the evening.
Close-up of open book on table at home
Rear view of women with umbrella
Female farmer teaching gardening to afro girl while crouching at greenhouse
Smiling female teacher shaking hands with student in classroom
Close-up of cute girl holding toy at home
Boy drawing on paper
Smiling young woman wearing mortar board while standing against sky at night
Little striped kitten kisses his protective female dog, who defends him and follows
Rear view of woman playing in lake
Rear view of woman reading book at beach
Cute kids sitting at home
Young boy laying on bed watching on tablet in modern bedroom
High angle view of woman holding book while standing at stall
Portrait of girl studying on field
Schoolgirls studying at desk in classroom
Close-up of person hand weaving cotton on table
Portrait of girl sitting outdoors
Aerial view of snowcapped mountains against sky
A young boy with a mask sitting and working with his laptop in the library
Full frame shot of empty chairs
Young woman reading book while listening music on table
Midsection of girl holding coins outdoors
Cropped hands of boy writing in paper
Cropped hands performing experiment on chemicals in laboratory
Male entrepreneur presenting business idea with colleagues in board room
Midsection of woman reading book at table
High angle view of smiling teenage boy holding pencil while studying at home
Close-up of hand holding paint brush to palette
Low section of schoolgirls standing on ground
Portrait of young woman looking away outdoors
Close-up of hand holding snails outdoors
Close-up of books on table
Hands of a man holding binoculars. close-up image.
Smiling teenage boys walking together in school corridor
High angle view of teenage boy writing in book on table
Group of people in front of office
Young girl sitting on rock fishing from backyard dock in winter
Full frame shot of wooden staircase
Close up of boredom girl sitting at desk
Man sitting on cliff against clear sky
Side view of man reading book while sitting on chair against plants
Close-up of blue light trails over black background
Portrait of woman sitting on table
Rear high angle view of three people walking down stairs
Student learning at home. young woman making notes, reading and learning from notepad
Boy reading book in motor home
Close-up of pencils over white background
Female students laughing while studying together in university campus
Friends reading book while sitting against trees
Cropped hand of female student writing on notepad on desk
Serious boy doing homework while using laptop and mobile phone at home
Portrait of woman holding leaves while sitting on field
High angle view of rolled up blueprints in rack
Young woman holding flowering plant
Portrait of young woman sitting on street
Close-up of hands playing guzhen
Rear view of girl dancing in studio
Close-up of toddler using mobile phone in dark
Young male and female students using laptop while sitting on steps in campus at night