Close-up of golden retriever wearing glasses, lying on sofa in living room. Happy brown dog looking in camera and posing. Puppy breathing with tongue out. Business funny domestic animal at home.
The teacher insanely screams at the students at the blackboard
Inclusive teacher leading English lesson in school classroom.
Portrait of scientist man with mathematical equations background. He put on his glasses and smile at camera. Clever and smart teacher lecturer concept. Let's study!
Medium vertical portrait of young Middle Eastern man in glasses, jacket using tablet computer, looking at camera and smiling, in front of demonstration screen with programming code in classroom
Portrait of elderly man wearing tweed jacket, necktie, and glasses and leopard pattern standing against white and brown background and looking away, then turning towards camera and smiling
Confident proud smart man in his 30s or 40s pointing at himself acknowledging his achievement at a job well done solving a complex problem
English teacher virtual teaching look at webcam give distance lesson. Female school tutor explain online class talking to camera sit at desk in classroom. Video conference call education.
Medium footage of mature Caucasian woman in glasses, blouse, with ID badge standing by projector screen at conference, speaking about scientific research on biochemistry or microbiology
Young male student answering professor's question during university lecture
Focused Elderly Man Reading at Library Table
Senior professor standing in front of students in classroom and explaining math formulas on chalkboard during lesson in high school
Front view of serious eldery bearded man in glasses which working with book at the library table
Portrait of Caucasian happy male teacher in turning to camera and smiling joyfully at college. Portrait shot of man professor at Lecturer
Inclusive footage: Teacher engaging students in science class
Man reading Book in University Library, Book Shop or Store, Spanish Student Wearing Glasses Standing near Bookshelf Reads Book and Exam Preparations.
Side view of serious senior bearded man with eyeglasses which reading in the library
Woman in glasses conducts an online lesson. She is teacher or professor of English. Woman smiles and speaks. She sits at table in the empty class.
Portrait of young man in glasses looking at camera in library. Close up of male professor or librarian. Books shelves on background.
Medium panning shot of elderly Caucasian professor in lab coat standing and talking, and multicultural postgrad students sitting at table with futuristic tablets and listening. Template for AR, VR.
Caucasian professional working from home in the evening
Middle aged female professor in glasses taking notes in notebook and talking to students when listening to their answers during lecture at university
Zoom in: Portrait of Young Female Teacher in University Classroom Standing In Front of Blackboard with Mathematic Formulas. Science Female Researcher in College Library, Looking at Camera Seriously
Senior professor explaining graph on chalkboard during math lesson, then looking at camera and smiling while giving lesson to college students
Math teacher standing in the class and smiling to the camera
Split screen shot of IT teacher giving lecture to students about coding and unrecognizable girl using VR glasses at class
Medium shot of multi ethnic group of students raising hands to answer questions asked by smiling middle aged female professor in glasses during lecture at university
Portrait of Adult Man in Glasses Looking at Camera Smiling in Colour Studio Shot. Old Male Isolated Alone on Grey Background Close up. Aged
Close up view of senior professor using chalk while writing on blackboard and giving lecture in college
Doctor reading book and smiling to the camera in the office
Medium close-up tilt shot of young Middle Eastern male STEM teacher sitting at desk and working on computer while getting ready for lesson, in front of whiteboard with programming algorithms
A young man organizing books on a shelf
Portrait of a young man with a smile, wearing glasses
Portrait of stylish Mature Asian Businessman wearing suit and glasses Outdoors looking around in city Smiling Close-up
Medium shot of Caucasian female scientist or professor with tablet computer and headset microphone giving lecture on biochemistry at university or conference
Thoughtful teacher standing next to the blackboard
Portrait of young man in glasses standing in library. Professor in library saying no. Customer of book store.
Waist-up shot of multiethnic university students in white lab coats sitting in front of futuristic AR touchscreens and listening to elderly professor, explaining new lesson. Template for AR, VR.
Medium shot of elderly Caucasian male professor sitting and demonstrating new lesson on futuristic touchscreen, multiethnic students watching attentively, then smiling at camera. Template for AR, VR.
Close Up Portrait of Smiling Businessman Working on Laptop
Businessman using laptop in library, smiling and researching
A young person collecting books from the floor
Dolly-in portrait shot of smart female mathematician in glasses standing with her arms crossed before blackboard with complex calculus formulas
Chemical Lab: Two Young Women Conducting Experiments
Close-up shot of student consulting professor about thesis, with man working on laptop in background
Medium close-up tilt portrait of geeky young male programming school or college teacher in glasses and jacket sitting at desk, working on computer while preparing for lesson, then looking at camera
Scientist smart clever man in white work robe and spectacles near chalk board with equations and formula, drink coffee and smile at camera, 4k UHD.