Think about a recent purchase you made that required a loan, like a house, or a new car.  Explain how you arrived at the decision to purchase.  Then explain how the interest rate on the loan affected your purchase.  For instance, were you able to purchase a higher priced item because the interest rate was low?  Thinking deeper about your answers; how do interest rates affect millions of other buyers and their decisions, then how that affects the whole economy? Explain.