摘要 : Using materials that are easy to procure, students create a zipline for a weighted keychain. They measure distances and times to calculate average velocities and explore the idea of instantaneous velocity. This inquiry-based calcu... 展开 Using materials that are easy to procure, students create a zipline for a weighted keychain. They measure distances and times to calculate average velocities and explore the idea of instantaneous velocity. This inquiry-based calculus activity has been tested as a first day activity in classrooms at a variety of institutions and has received positive student and instructor feedback. 收起