In this lesson, we learned about the unitary method, a way to find the value of one item and use it to find the value of many, or the other way around. We used it to solve problems involving cost, distance, weight, and time. First, we divide to find the value of 1 unit, and then multiply to find the value of more units. This method helps solve word problems and real-life questions quickly. Important terms include unitary method, division, multiplication, value of one unit, cost, weight, distance, and time.