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Young man looking to camera in front of a blackboard

Portrait of female chemistry intern standing in front of a blackboard with formulas, holding big, heavy books she bookmarked when studying, looking at camera and smiling.

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.

Creative idea concepts with light bulbs on a chalkboard background

Handsome businessman presenting health reports on white board with laser pointer

3D Brain on Arrow Blocks Steps with Cartoon Business Person - Chalkboard Background - 3D rendering

$Young female teacher in the school room during class, near chalkboard with writed math formulas. education$

$Portrait of mature academic person, female professor standing near blackboard with math forumlas. Woman is 50-60 years old, with blonde hair and sophisticated appearance. Image taken in Europe.$

Young asian teacher man teaching video conference with student. Male Indian teacher training the mathematics in classroom from online course. He wearing small talk headset.

Portrait of confident female scientist, in a lab coat, holding book with colorful bookmarks when standing in front of a blackboard with written chemistry formulas. She is looking at camera and happily smiling.

Portrait of a schoolgirl with dark brown hair, teenage student in school office.

smiling teacher with files at blackboard - add your text

$attractive female teacher in glasses near blackboard with math calculations. Back to school$

$Portrait of woman in late 50s, in lecture hall, standing near blackboard with math formulas$

Midsection of a doctor in a suit holding a brain symbol made from paper while sitting at the table in the hospital. Close-up photo. Medical and healthcare concept

Female student holding books in front of the blackboard.

Intelligent child boy with brain on blackboard

Mature adult teacher wearing a yellow button down shirt,blue waist,pants and necktie standing in front of blackboard for teaching math.He is standing on the right side of frame.The green chalkboard is full of mathematics.He is wearing glasses and has curly hair and mustache.The photo was shot is studio with medium format DSLR camera Hasselblad horizontally.

Portrait of a school teacher with a magazine at the blackboard.

3D Calculator with Brain - Chalkboard Background - 3D Rendering

Close-up on female teacher in horn rimmed glasses. She is standing against chalkboard and holding chalk. Focus on blackboard.

World Brain Tumor day, Brain Stroke, Dementia, alzheimer, parkinson and world mental health month. Brain model with Piggy Bank for support illness life. Health, Donation, Charity, Money Saving

$Portrait of mature academic person, female professor standing near blackboard with math forumlas. Woman is 50-60 years old, with blonde hair and sophisticated appearance. Image taken in Europe.$

Serious professor explaining algebraic formula by blackboard

Portrait of mature adult scientist holding hourglass in front of green chalkboard. he is holding object in his left hand. He has long hair and beard. Shot indoor with a medium format camera.

Legal Weight Scale with Brain - Chalkboard Background - 3D Rendering

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