This math topic focuses on practicing the calculation of distance in scenarios with changed time units, within the framework of speed, distance, and time. Students compare which of two entities (such as horses, spaceships, bugs) travels further based on given speeds and time durations. Different units of speed and time are used across problems, requiring students to perform unit conversions and apply the distance formula (speed × time) to determine and compare the distances traveled. This set of problems enhances understanding of unit conversion within the context of real-world applications.