Εκπαιδευτική διαδικασία. Μαυροπίνακα για το κείμενό σου. Μαθήτρια βοηθώντας τους μαθητές να σπουδάζουν σε γραφεία στην τάξη - Φωτογραφίες & Εικόνες Αρχείου

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Basic knowledge of chemistry. Girls study chemistry. Make studying chemistry interesting. Microscope and test tubes on table. Educational experiment concept. Be careful performing chemical reaction.

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