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Right triangle with pythagorean formula on a blackboard
Maths, geometry formula written by chalk on the blackboard background
The world map on a whiteboard
A teacher writes the Pythagorean theorem equation on a black chalkboard while teaching a group of students in a classroom
Studying mathematics in Kambsdal College
Pythagorean theorem sketched with white chalk on a chalk board
Math exercise written on the chalkboard. Gray background
Chalkboard for teaching children in school with chalk
A teacher fills in a checkbox within in a series of symbols while teaching a math equation to a group of students
A teacher writes the theory of relativity Einstein equation on a black chalkboard while teaching a group of students in a classroom
A teacher explains to students the principles of a normal distribution in the area of probability distribution.
A teacher explains to students Newton's law of gravity diagram, a theoretical physics equation that describes the behavior force and mass
A teacher explains to students the Feynman diagram, a theoretical physics equation that describes the behavior and interaction of subatomic particles
Wads of crumpled up paper scattered in and around a trashcan shows the frustration of an office worker. Image can be easily cropped and used as a vertical depending on buyer needs.