algebra
background
black
blackboard
board
calculate
caucasian
chalk
children
class
classroom
cognition
college
complex
concept
drawing
education
example
explain
hand
learn
lesson
looking
mathematic
mathematical
number
occupation
peace
people
person
portrait
school
standing
student
teacher
text
theory
university
write
writs
定額
Hand writing maths equations with chalk on a blackboard. Perspective from below.の素材 [FY310209514679]
この写真素材のタグ
最近チェックした素材
![Work space for photographer. Have a laptop and film camera on wooden table.の素材 [FY31048060985]](https://images.assetsdelivery.com/compings_v2/kkolosov/kkolosov1511/kkolosov151100038.jpg "Work space for photographer. Have a laptop and film camera on wooden table.の素材 [FY31048060985]")
![Unrecognizable solar panel technicians cheking a Spanish installationの写真素材 [FYI08075222]](https://cdn.qleanmarket.amanaimages.com/uploads/items/080/752/22/thumb/FYI08075222.jpg "Unrecognizable solar panel technicians cheking a Spanish installationの写真素材 [FYI08075222]")
![Close up of a microphone on a concert stage with beautiful lighting.の素材 [FY310169026689]](https://images.assetsdelivery.com/compings_v2/uximetcpavel/uximetcpavel2105/uximetcpavel210500267.jpg "Close up of a microphone on a concert stage with beautiful lighting.の素材 [FY310169026689]")
![Hagia Sophia, sultan ahmed blue mosque, Istanbul Turkeyの素材 [FY31051798039]](https://images.assetsdelivery.com/compings_v2/alicephoto/alicephoto1602/alicephoto160200544.jpg "Hagia Sophia, sultan ahmed blue mosque, Istanbul Turkeyの素材 [FY31051798039]")