Mathematische Rätsel, Knobelaufgaben und Spiele

This book is aimed at anyone who enjoys solving mathematical problems and has some patience and perseverance. It is very versatile in its applications - for leisure, in school lessons, as part of gifted education, and in extracurricular activities. The predominantly multi-step tasks can be worked on independently of each other. The colorful mix encourages you to simply "get started": finding approaches, developing ideas, and trying out solutions. Specifically, it addresses questions such as: How can LEGO walls be built stably? Which incorrectly shortened fractions are still correct? Why can quadratic equations have more than two solutions? How do regular polygons fit together? How can fair rules for dice games be found? The tasks in the first part can be solved using basic mathematical methods, making them suitable for elementary and lower secondary school students. The problems in the second part require knowledge from the middle school level, while some methods in the third part are only taught in upper secondary education. Some questions in the fourth part may even challenge experienced mathematicians. Therefore, detailed solutions and hints for alternative approaches are provided - they make up about three-quarters of the book's content. Additionally, some tasks have printable templates available online.