Male college student answering questions of senior professor while standing beside chalkboard with formulas in classroom
Student discussing lesson with professor in high school
Senior professor standing in front of students in classroom and explaining math formulas on chalkboard during lesson in high school
Student explaining formulas to professor and classmates in high school
Caucasian girl explaining math formulas on chalkboard to group of students and professor during university lesson
Mixed race woman teacher asking secondary school students about structure of human internal organs during biology lesson. Multiracial senior school students raising hands to answer teacher's question
Crane shot of smiling teacher asking questions to kids in school class. Clever schoolchildren raising hands at lesson in classroom. Mixed race pupils answering questions of schoolteacher at school
Mixed race kids sitting at desks in school class. Female teacher checking children home work in classroom. Smart students raising hands at school. Clever pupils answering questions at school lesson
college professor answering students question
Professor using a chalkboard to teach a science chemistry class, asking questions and pointing to have a student answer
Student teaching formulas to professor and classmates in college classroom
African American student teaching math formulas to classmates and professor in college lesson