This lesson plan is for a 9th grade mathematics class in Surabaya, Indonesia. Over two class meetings, students will learn about the surface areas and volumes of cylinders, cones, and spheres. In the first meeting, students will work in groups on a worksheet solving problems related to surface areas. They will then discuss their work and solutions. In the second meeting, students will work on a similar worksheet involving volume problems for cylinders, cones, and spheres. The goal is for students to correctly solve surface area and volume problems by the end of the two lessons.