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Science teacher writting at blackboard. Education and physics.
Frustrated senior teacher standing in front of a chalk board.
One Caucasian male professor sitting on the desk in the classroom and holding a notebook and a pen, checking who is absent.
Portrait Of Teacher By Blackboard In Classroom
One young male teacher posing in front of a green board
Retro photo of a young scientist making calculations on an adding machine. USSR, 50s of the twentieth century.
Teacher at classroom sitting on desk, preparing for next school year. Waiting for students.
Female teacher discussing mathematics during class
Portrait of male teacher at a university sitting in a comfortable leather chair at the department.
Portrait of a happy smiling school teacher or adult student man wearing a protective face mask smiling and looking at the camera posing while writing on white blackboard while teaching mathematics in a Turkish high school classroom
Man standing at chalkboard explaining Pythagorean theorem while pointing at triangle drawn on board, with colorful magnets and wall clock in background
An old professor teaches mathematics front of the blackboard
A shot of one Caucasian male professor sitting on the desk in the classroom and holding a notebook and a pen, checking who is absent.
Dnepropetrovsk, USSR - circa 1982: A young researcher at the Dnepropetrovsk Metallurgical Institute makes manual calculations without the use of a microcalculator and a personal computer.
Teacher at classroom sitting at desk and teaching students. He is talking to someone in classroom.
Indoor image of an exhausted male teacher or professor feeling sleepy in the classroom. He is standing against blackboard where his thought bubble is drawn depicting his sleepiness condition. The bespectacled man is in formal shirt, sweater and coat. One person, waist up, horizontal composition with copy space.
Annoyed elderly man holds a marker, expressing irritation over an overlooked obvious point, standing against a plain grey blackboard
The teacher started a countdown on the phone during the exam for completing the task.
Back to school. Portrait of high school male student at the school library.
Portrait Of Smiling Man Against Blackboard
Man in front of huge blackboard. He knows answer.
Soviet army officer reads a book in his office. USSR. Circa 1943.
A portrait of 60-69 years old Turkish businessman. He is sitting in his office and looking away. He puts hand on his chin. There are two orchids behind him.  The photo was shoot indoors with daylight.
A front view of one Caucasian male teacher standing in the classroom. Save the planet Earth concept.
Music teacher
Man sitting by the Treaty 4 Monument at Fort Qu'Appelle in Saskatchewan, Canada. Vintage photograph ca. 1926.
Man Writing at Desk in 1940. Sepia Toned.
People and education. Teacher writing on math equation on blackboard during lesson.
Genius nerd easy found the solution of a mathematical formula in blackboard
Free Images: "bestof:Oto Vilčnik.jpg en Oton Valter Vilčnik Slovene teacher and disident by 1962 ZGMDCJR0 doc author Custom license marker 2013 08 28 PD-Slovenia DEFAULTSORT"
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