GOOD:The book's spine and cover are in good condition (may show signs of wear) and its pages are free of marks/highlights.
Product Details
From the back cover: "This colourful book is packed with exciting scientific activities designed to help young children explore the intriguing properties of light. All the experiments and tricks are safe and easy to carry out using ordinary household equipment. Real examples show how people exploit the way light behaves for driving mirrors, periscopes, lenses and so on."
The small book (24 pages) has labeled drawings that explain the various parts of cameras, for example. There are additional notes for adults who are working with their children.
(There are British spellings throughout as Usborne is a UK-based publisher.)