young woman teacher college instruction university classroom blackboard described chalk projection from |
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| navigate by keyword : adult blackboard books casual caucasian chalk class classroom college computer concept desk education female figures formula girl glasses green happy indoors knowledge laptop learn learning lecture lesson looking mathematics object people school sitting smiling stack student study studying supplies tablet 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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