[vimeography id="651"] We spent some time to revise on various topics before touching on finding volume of revolution.[vimeography id="650"] In this lesson, we discussed integration of modulus functions and area of rectangles.[vimeography id="649"] In this lesson we discussed integration by substitution and integration by parts.[vimeography id="638"] In this lesson, we discussed the integration of trigo ratios: including the factor formula and trigo ratios with powers.[vimeography id="639"] We started on integration. We discussed the inside-outside formula and the integration of exponential functions.[vimeography id="633"] In this lesson, we discussed more about planes. We have to quickly finish up the topic so that we will have enough time for techniques of integration before the promos.