Our 5 year old daughter has received this book for Christmas. It is a pleasure to read it. The numerous illustrations are attractive, informative and varied. The topics identified in the book cover the topic very well and all its aspects. The explanations are well written, concise and precise - they must be paraphrased and re-explained to a 5 year old child, but suddenly it will still probably enjoy a read on her own book when she's older. Great collection!