This collection of Sketchpad activities enriches your students' study of calculus, empowering them to directly experience the dynamic, geometric nature of calculus in a hands-on format. Students' understanding will deepen as they: dynamically control the number of subintervals in a partition and see the area measurement change instantaneously explore the relationship between the graphs of an equation, its derivative, and its second derivative as the original equation changes nvestigate changes of position and velocity, leading to an exploration of rates of change and limits at infinity.