Πίσω στο σχολείο. Ευτυχισμένος μικρός επιστήμονας που κάνει πειράματα με δοκιμαστικό σωλήνα. Ήταν ένα μικρό πείραμα χημείας. - Φωτογραφίες & Εικόνες Αρχείου

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My chemistry experiment. Little kids scientist earning chemistry in school lab. Little children at school lesson. School concept

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Cheerful smiling little boy having fun against blue wall. Home schooling. Lesson Plans - Middle School Chemistry. A chemistry demonstration

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