Professional lecturer standing in lecture hall
Rear view of several youthful students keeping their hands raised at lesson
Group of students listening to lecturer at college
tired from study student sleep in lecture hall b
Cropped shot of mature male coach of military training with carbine
Commenting topic point
Young man in t-shirt sitting by desk and making notes in copybook
Student with laptop
College student
African American student standing in lecture hall
Two Students in Class
Group of students studying together at university
Students working at lecture in lecture hall
Group of student studying at university
Lecture in college
Knowledge
Schoolboy sleeping during boring lecture
Doodles
Focus on young African American male student raising hand to ask question
Friends at lesson
Teacher in front of audience
Confident mature male coach comparing two guns at lesson
Group of multiethnic students sitting at lecture
Working in team
Woman in headphones learning at home
Young student
Studying
Group of students studying at college
Group of multiethnic students sitting at lecture
Mature teacher standing in lecture hall
