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Bought this book and "Monday with a Mad Genius" for my boy as a surprise for summer camp. He told me he enjoyed both, since this one tells the facts about Da Vinci's ideas. Simple reading and encourages the investigative side of him.
This is such a wonderful series. My daughter loves non-fiction and she has almost read every non-fiction book in this series. Well written and great pictures. The Kindle version lets you get a close up of the pictures which my daughter loves!