In this lesson, students learn about metric units of length, including millimeters, centimeters, meters, and kilometers, and explore how to read, write, and convert between these units. A discussion highlighted that the statement “meters are longer than centimeters” is sometimes true, as it depends on the specific values being compared. Through examples, such as comparing the lengths of Moe’s and Alex’s skipping ropes and Sam’s garden rope, students are taught to consider both numerical values and units when measuring and converting lengths.