This presentation introduces different types of bonds. It begins by defining a bond as a long-term debt instrument used by governments and corporations to raise money for projects. It then describes four main types of bonds: perpetual bonds that never mature; coupon bonds that pay interest and have a maturity date; zero-coupon bonds that do not pay interest but are sold at a discount; and semiannual coupon bonds where adjustments must be made to account for interest being paid twice a year. Formulas for calculating the value of each bond type are provided.