Who has turned the clock? Is it really that late already? This book prepares your students to handle time spans and clock times—an essential skill for successfully navigating everyday life! The tasks in this book align with the concept of active-discovery learning. A key focus is on the area of "estimation," allowing your students to develop a sense of time and assess whether something takes a long or short time, or is fast or slow. A didactic-methodical commentary, practical implementation tips, and an overview of all sub-learning objectives complete the volume.