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People learning in a lecture hall.
Professor teaching on blackboard
Professional Male Teacher Gives Presentation, Uses Whiteboard with Technical Information and Charts to Illustrate Solution Options During Video Call. E-Learning and Remote Education Concept.
Portrait of a young professor teaching about AI
Portrait Of Teacher Writing On Blackboard In Classroom
Businessman lecturing
A handsome Asian senior adult businessman is giving a business presentation in a business meeting room.
Mature caucasian man high school teacher writes mathematics formulas on the blackboard with chalk. Copy space. Education concept.
Portrait a male teacher at a university sitting in a comfortable leather chair at the department.
Senior adult company CEO showing investment revenue report chart on big screen in meeting room, medium shot
Professor writing on the blackboard.
Annoyed elderly man holds a marker, expressing irritation over an overlooked obvious point, standing against a plain grey blackboard
Los Angeles, California, USA - June 13, 2012. The location is University of California, Los Angeles. Point of view of a professor teaching a class, from the outside looking in.
Man standing at chalkboard explaining Pythagorean theorem while pointing at triangle drawn on board, with colorful magnets and wall clock in background
Serious professor explaining algebraic formula by blackboard
One young professor having classes about modern topics
Multiethnic Group of People with Formula on Chalkboard
Bible teaching based on the parable based on the cornerstone and stacked brick as living stones
Portrait of teacher looking at camera and explaining topic in the classroom against blackboard
Caucasian adult businessman taking a lead at a business meeting in a bright warm office. Analyzing data and displaying them on a board.
elderly man with a serious expression sits at a table in a busy, well-lit room, hands clasped. He reflects on future issues like climate change, job losses due to automation, and power concentration
University professor with stick, cross processed
Portrait Of Smiling Man Against Blackboard
Young professor modernizing his lessons
Mature professor teaching mathematics to students in classroom. Teacher man solving math problem while writing on white board with video conference. Covid-19 learn from home.
A grumpy older female teacher in front of the classroom
An adult teacher at the blackboard explains a task in higher mathematics. Selective focus
Adult education teacher in front of his class, shallow depth-of-field.
mature teacher standing in front of an empty blackboard, could be a university classroom, professional course but also a military man or a sales expert, experienced and proud, holds a chalk in his han
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