young woman teacher college instruction university classroom blackboard described chalk projection from |
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| navigate by keyword : adult background blackboard casual caucasian cheerful class classroom college computer concept desk education female figures formula girl happy horizontal indoors job knowledge laptop learn learning lecturer lesson man notebook object people person professor school sitting smiling student studying supplies table teacher teaching technology textbook university using wisdom woman write young |
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| Smiling female teacher. Young woman teacher in college. Instruction in a university classroom. Blackboard described by chalk. Projection from the data projector |
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