"Additional materials" is a book that opens the reader up to limitless opportunities for research and learning. The authors offer a unique perspective on studying the world around us through the lens of various materials: from stone and metal to fabrics and plastic. Thanks to this book, the reader can learn a lot of interesting things about the structure and properties of materials, their impact on our everyday life and the development of technologies. "Additional materials" is not only a source of knowledge, but also an impetus for new discoveries and creativity in the field of materials science.