Re:Wonders of Life Series (Score 1)

These are wonderful. They are exactly what you are looking for. Hemo the Magnificent is about the heart and lungs. Dr. Frank Baxter known in the series as Dr. Research is the preeminent teacher. While much has been added to our knowledge it is surprising how well these stand up. I'm 56 and just last year bought the whole series on Amazon. My 21 year old Va Tech senior loves them. Your 7 year old will adore them.