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Student raising her hand in an engineering class while professor is at the white board writing about chemical bonds
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Two young friends taking photos of themselves against white background
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Focused asian student raising her hand in class at the university
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Student raising his hand to ask a question in class at the university
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Students listening to their teacher in classroom and raising their hands at the university
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Smiling female student raising her hand in class at the university
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College student looking at results posted on bulletin board raising fist, classmates congratulating, rear view
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Engineering instructor with Aspergers demonstrating project bubble diagram to students, one man with spinal cord injury
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Two women sitting in classroom with focus on African American woman raising hand
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Female engineering students giving high five in the college academic center
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Low angle view of graduate students throwing their mortar boards in air
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Group of Hands in the air isolated on white background
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The word research against college students raising hands in the classroom
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Student raising his hand to ask a question in classroom at the university
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Pretty brunette student raising her hand in a lecture hall in college
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Portrait of smiling young college students raising hands in the classroom
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Pleased teen girl with raised hands sitting at desk with books
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High angle view of excited friends raising hands while sitting on grass in park
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Young Vietnamese woman college Student sitting by school desk in white tank-top and rise her hand signaling that she is ready to answer
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People at school, student raising hand and asking question to professor during class in college, Law School, University of Havana, Cuba
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Student raising his hand while his classmates are taking notes in an amphithater
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A set of human figure and pictogram showing scenarios in a school.
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Student rises hand signaling that she is ready to answer
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Rear view of students with hands raised with a teacher in the classroom
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Smiling handsome mature student raising his hand while at his desk in classroom
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Portrait of students taking notes while their classmate is raising her hand in an amphitheater
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Side view of a young female student raising hand by others in the classroom
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Student rises hand signaling that she is ready to answer
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