This book paints a – quite literally – colorful picture of mathematics: It presents a selection of mathematical topics that are explored through consistently colorful illustrations and supported by simple explanations wherever possible. Formulas and calculations have been minimized as much as possible. The book is particularly suitable for children from around 8 years old and teenagers. It offers teachers and parents relevant suggestions for joint mathematical explorations. The individual chapters are essentially readable independently of one another, making them versatile for use. Regularly interspersed prompts for reflection and ideas for personal investigations make mathematical discovery tangible. Solutions to these prompts as well as printable templates are provided online. Most of the topics will be familiar to readers of the popular books Mathematics is Beautiful, Mathematics is Wonderful, and Mathematics is Truly Wonderful – this is a selection of content from these books, largely reworked anew here: The presentations in this "colorful" book are much more vivid, detailed, and child-friendly. Additionally, further topics have been added that are particularly suitable for younger math enthusiasts.