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old smiling teacher stands near blackboard with |
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| navigate by keyword : adult black blackboard board caucasian chalk chalkboard class classroom closeup college education elderly face formula glasses green happy indoor information integral knowledge learn lecture lesson man mathematics modern old one person portrait pose professional professor russia school science serious shirt smile study sweater teach teacher teaching tutor tutoring university white |
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| Old smiling teacher stands near blackboard with mathematics formulas in school classroom |
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Stockphotos.ro (c) 2025. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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