Mathematics
Close-up of hand holding abacus over white background
Smiling girl sitting with brother at home
Rear view of man standing against blackboard representing sweat
Interior of home
Close-up of clock on table
Asian high school girl solves geometry on the blackboard
High angle view of magnifying glass on paper
Side view of woman sitting on road
Close-up of coiled spring
Portrait of young woman standing against wall
Close-up of flowers blooming outdoors
Full frame shot of tiled floor
High angle view of pencil on spiral notebook
Directly above shot of various objects on white background
High angle view of fruits and vegetables on table
Pencil on paper
Close-up of information sign against building
Close-up of multi colored text on wall
Back to school text on blackboard in classroom
Asian high school girl solves geometry on the blackboard
Boy working at table
Close-up of toys on table at home
Close-up of hand using calculator against white background
Close-up of text on paper
Portrait of woman with arms outstretched
Directly above shot of person holding table
Close-up of telephone
Close-up of boy writing in book at table
Close-up of toy blocks on table
Side view of girl writing on chalkboard
Close-up of laptop and calculator on document in office
Low section of woman standing on road
Boy with arms raised against blue background
Patterned apron hanging on wall
Cropped hand of person using calculator on table
High angle view of christmas decorations on table
Close-up of turquoise telephone
Cropped image of child playing with toy
Full length of young woman sitting on road
Close-up of bird perching on plant
Close-up of coins and calculators by piggy bank on table
Close-up of hand using calculator while analyzing graph at table
Close-up of blueprint with calculator and writing instrument
Portrait of smiling young woman using mobile phone while sitting on table
Close-up of sign on building
Midsection of woman using digital tablet on table
Portrait of young woman standing against black background
Full frame shot of spiral
Rear view of girl drawing on wall
Directly above shot of chopsticks over yellow background
Asian high school girl solves geometry on the blackboard
Close-up of wooden blocks
Side view of boy writing on blackboard
Asian high school girl solves geometry on the blackboard
Full frame shot of paper
Portrait of a smiling girl standing against wall
Close-up of pencil by book and calculator
Full frame shot of orange flower
Smiling kids sitting by table
Cropped hand by toy on table
Unrecognizable young kid holding digital display with glass screen to study sitting over his bed
High angle view of medical report
High angle view of girl drawing on road
High angle view of pencil and eraser on questionnaire
Portrait of young woman standing against wall
Close-up of multi colored candies
Close-up of multi colored candies on table
Midsection of woman writing in book at table
Close-up of calculator on table
Full frame shot of tiled floor
High angle portrait of girl lying down on carpet at home
Directly above shot of school supplies over book on table
High angle view of boy playing on sand
Asian high school girl solves geometry on the blackboard
Close-up of abacus on red table
Close-up of human hand
Back to school text on blackboard in classroom
Asian high school girl solves geometry on the blackboard
High angle view of computer cables on table
High angle view of breakfast served on table
Portrait of young woman working at desk in office
High angle view of typewriter with papers on table
High angle view of colored pencils on table
Close-up of computer keyboard on table
Close-up of text on wooden table
Close-up of hand over multi colored abacus
View of old ruins
Portrait of young woman
Close-up of multi abacus calculator
Close-up of fish in sea
Portrait of smiling young businesswoman working at home
High angle view of shells in plate
Portrait of woman with arms outstretched
Low angle view of bubbles against sky
Close-up of green leaves on sunny day
Boy holding paper airplane against greenboard
High angle view of model house with calculator and pencil on financial documents
Portrait of woman standing against graffiti wall