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Middle aged caucasian mathematician explaining equations on a white wall themes of teaching intelligence education
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.
Frustrated senior teacher standing in front of a chalk board.
Portrait of Commandant General Petrus Jacobus Joubert (1831 - 1900). Vintage photo etching circa late 19th century.
Portrait of male teacher at a university sitting in a comfortable leather chair at the department.
Vintage Photo of a Man - Scanned 1890 photo
Portrait Of Teacher By Blackboard In Classroom
Antique photograph of Jules François Camille Ferry was a French statesman and republican. He was one of the leaders of the Moderate Republicans and served as Prime Minister of France from 1880 to 1881 and 1883 to 1885.
An astrophysicist is sitting in front of a black board and a laptop computer.
19th century illustration of a scientist with microscopes, books, vials and bottles delving into the mysteries of the natural world.   From a 1876 copy of Harper's New Monthly Magazine.
Isaac Newton a portrait from English money - pound
Portrait of Reverend William George Lane of the Royal Canadian Regiment of Infantry. Vintage photo etching circa late 19th century.
View of Nicolas Copernicus Monument in Warsaw, Poland
man with a mad hair and a labcoat infront of a blackboard,, holding a piece of chalk
Portrait of teacher looking at camera and explaining topic in the classroom against blackboard
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Portrait of mature adult teacher in front of green chalkboard. He is wearing a button down shirt and a yellow necktie while looking at camera. Math formulas are written on blackboard. Shot in door with a medium format camera.
Portrait Of Smiling Man Against Blackboard
Louis Pasteur a closeup portrait from money
Portrait of Stephanus Johannes Paulus Kruger (Paul Kruger), 3rd State President of the South African Republic (1825 - 1904). Vintage photo etching circa late 19th century.
Mihai Eminescu cit from 1000 Romanian lei banknote, 1996 Series - paper, for design purpose
A grumpy older female teacher in front of the classroom
Serious professor explaining algebraic formula by blackboard
Grenada postage stamp: Nobel prize
old professor standing in front of chalk board with complicated formula and calculation studio shot
An elderly professor of mathematics stands in his office at a white board with notes and explains the material to students.
Nicolaus Copernicus a portrait from money - Polish zloty
Portrait of Donald Alexander Smith, 1st Baron Strathcona and Mount Royal “Lord Strathcona” (1820 - 1914). Vintage photo etching circa late 19th century.
Mihai Eminescu cit from 1000 Romanian lei banknote, 1996 Series - paper, for design purpose
China postage stamp: 2010,Johann Sebastian Bach.
Free Images: "bestof:Scottish mathematician and physicist who contributed to many branches of physics. Scottish mathematician and physicist who contributed to many branches of"
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