Get in touch with nature with this magic lens book from Sassi Science. This book comes with a magic three coloured lens that allows you to discover three different things on each page of the book. Move the red lens over a page in the book and it will focus on one learning – for example, the caterpillar. Look through the green lens and suddenly you are exploring and learning about the butterfly in the same image – magic! Like a true scientist, discover the water cycle, the growth of plants, the seasons, volcanoes, fossils and many other features of the natural world. Age guide: from 6 years.