Q: “Why are we studying this?”
Ultimately everything the Christian does should be an extension of God’s command to glorify Him in all things—“whether we eat, or drink, or whatever we do.” Glorifying God means “making much of” Him. The seraphim in heaven make much of God, crying out “the whole earth is full of [God’s] glory!” Whatever we teach, our goal should be to make much of God—not just in our personal interaction with students or in Bible class, but also in every subject. So the Christian educator should be able to say along with the seraphim “mathematics is full of God’s glory” or “literature is full of God’s glory!” If we find that strange, it’s not because God’s glory isn’t found in that subject, but simply that we’ve probably never given it much thought.
Are your textbooks answering this question for you?