There are many theoretical perspectives on this question, ranging from expectancy-value theory to future time perspective and self-determination theory. The age of the students also plays a major role as younger children have more difficulty connecting with the instrumentality of content. These complexities aside, teachers have a clear and important role in helping students understand the "why" of their studies. The question is how is this best done with elementary, middle, high school and university students? How should our approach change in fields like math or physics, compared to fields like geography or history, and native or foreign language studies? Finally, how do our approaches change across different cultures?