With the help of the 74 folding exercises, students can experience mathematical relationships in a hands-on way, making them comprehensible in a lasting manner. The folds lead to various mathematical aspects, addressing not only geometric topics but also algebraic content. The folding exercises can be directly used in a classroom setting without any prior knowledge of paper folding. For each exercise, there is a page for the teacher with material specifications, solutions, instructions for implementation, and alternative or further tasks.