Calculus essentially takes the fundamentals of algebra and extends them to include rates of change between quantities. The concepts are taught entirely through step-by-step example problems of increasing difficulty. It works by introducing each new concept in an easy to understand way and using example problems that are worked out step-by-step and line-by-line to completion. This lesson teaches students the techniques of integration associated with integrating polynomials and trigonometric functions. The fundamental theorem of calculus is used to solve definite integrals of these types in a step-by-step fashion. The problems are sequenced in increasing difficulty to promote understanding of these topics. Teachers User Instruction & Resource Guide; Includes Recommended books & Calculus Websites.