101 Dinge, die jeder über Wissenschaft wissen sollte
Please note:
Montessori materials are NOT toys, but educational materials. Proper use requires appropriate training.
Montessori materials may contain small, rough, sharp, or other elements that could cause injury or damage if used improperly.
It may therefore only be used by children under the supervision of appropriately trained persons and in an appropriate environment.
Dia L. Michels. Nathan Levy. An impressive source of science information for all ages. Written in a question-and-answer format filled with fun facts and concise explanations.
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