many puppil or students hands raised with a solution on a lesson or lecture with a teacher speaking

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Palabras clave

classroom, pupil, school, education, children, class, teacher, learning, lesson, boy, hand, student, person, caucasian, girl, elementary, cognition, raised, teaching, back, group, woman, blackboard, blackboard, studying, man, many, answer, male, classmate, development, question, indoor, crowd, listening, mathematic, solution, schoolboy, profession, lecture, write, chalk, university, speak

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