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Happy mature teacher talking to group of his students during a class at lecture hall.

Back view of African American student raising her hand to answer teacher's question during a class.

Young teacher with tablet sitting in front of audience at lesson while giving some information about the subject

Back view of mature professor giving lecture to large group of college students in the classroom.

Students are in classroom, they are listening to a lecture

Mature professor giving test results to his students on a class in the classroom.

Diligent teenage students listening to their teacher explanation while taking part in discussion of new topic

Mid adult student learning with teacher's assistance during a class at lecture hall.

Young students are in classroom, they are looking interested at their classmate

Male business coach speaker consulting and training new employees

Lecturer and multinational group of students in an auditorium.

Multi-ethnic business group listening to a speaker while attending a business seminar at a modern workshop.

Male professor talking to his students during IT class at high school.

A group of young students are learning lecture together

High school students writing mathematical formula on whiteboard and talking to his professor in the classroom. Copy space.

Presenter, happy, successful male expert, speaker talking, teaching to business people in meeting room on conference seminar. Concept of conference, training, planning, learning, coaching, business.

Group of teenage students studying at table in classroom

Lecturer and multinational group of students in an auditorium.

Computer science teacher talking in front of whiteboard to group of high school students in the classroom.

Woman, student and writing university exam in classroom for higher education, scholarship and training. Focused female learning and taking notes in workshop with group of college students.

Woman, student and writing university exam in classroom for higher education, scholarship and training. Focused female learning and taking notes in workshop with group of college students.

Coach training speak explain question to group of employees at seminar

Confident teacher answering questions of students after lesson

Business meeting. Teamwork concept. Young businessman with speech to colleagues.

Group of students study

Wide angle view at mature male teacher giving lecture to class of young students in modern school, copy space

Business and entrepreneurship symposium. Speakers giving talk at business briefing. Rear view of employees communication during meeting. Training, planning, learning, coaching, business concept

Female professor explain to students and interact with them in the classroom.Helping a students during class. University student being helped by female lecturer during class.

Business meeting. Teamwork concept. Young business woman with speech to colleagues.

Mature professor pointing at something while holding lecture to his students in the classroom.

Senior university professor explaining something to African American Muslim student during a class in the classroom.

Contemporary teacher reading one of essays to group of students at lesson of literature

Group of smiling students and teacher with notebook in classroom

Male student is standing in the classroom and reading

Male speaker giving talk at business meeting. Rear view of businessman raising hand for speakers question in meeting room for seminar. Concept of training, planning, learning, coaching, business

Mature professor assisting African American student with a lecture in the classroom.

Performing, business and speaker with audience at office for learning. Coach and employees are training during meeting at company on board. Concept of conference, training, learning, coaching.

Strict teacher pointing at notes of one of students at lesson during individual work

Mature professor using digital tablet while communicating with his students at college classroom.

Education, learning, teaching and people concept - group of students and teacher at school lesson

Students, presentation and lecturer by table in classroom, education lesson and focus in university. People, diversity and college for learning or seminar, teaching and laptop or study books on desk.

College students sitting in a classroom, using computers during class.

Lecturer and multinational group of students in an auditorium.

Teacher showing one of students paper with essay or test while passing them over

Happy mid adult student talking during a class at lecture hall.

Friendly Professor explaining exercise to students in secondary school classroom. Senior Teacher with beard helping teenager learning student

Happy college student feeling satisfied with his exam results and communicating with his teacher in the classroom.

Mature professor talking to his student while assisting her on a class at the university.

Smiling female student and her classmates listening teacher's lecture during a class at the university.

Mid adult students cooperating while using laptop in the classroom.

Young businesswoman explaining business project to her colleagues during seminar

Coach training speak explain question to group of employees at seminar

Happy confident teacher explaining his students what he thinks about new subject

Creative collaboration. businessmen and businesswoman in a meeting

Beautiful Caucasian woman teacher standing and explaining lesson to students at classroom.

Mature teacher communicating with black Islamic student while assisting her at university classroom.