These books are superb (Biology, Physics, Chemistry and Maths). Well written and illustrated. Does not shy away from complex subjects but still manages to be clear but not condescending. I must point out that this book is also a good reference for adults as well. With so much misunderstanding of science these days it is a good way for people to get up to speed with the sciences. After the results regarding science and New Zealand children this book is a ‘must have’.