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I bought this for my soon to be 4 year old son for Christmas so haven't yet recieved. It's a bit old for him however, I hope to read it to him and go through all the different subject with him. I'm certain this will help his education in school as it covers pretty much all of nature be it biology, geography, space and more. I'm pretty certain that I'll be learning a lot more from this book then I ever did at school! The illustrations are beautiful too. I keep flicking through it myself and putting it back in my Christmas stash, can't bring myself to wrap it up yet!
I have young children and we are loving picking bits of this and reading it. We are adding our own notes in the margin; questions we have and answers we find. It's becoming OUR notebook. I would recommend it for families with young children 5-9 years. I'm a part time home educator and it's a great resource for some first stage nature studies.