This activity will introduce the Calculator-Based Ranger™ 2 motion sensor and the Vernier EasyData® app. Students will collect data and analyze both linear and non-linear data.

Students will work in groups of two. One person will operate the calculator and also point the CBR 2 toward the torso of the other person, the “walker.” The walker should be standing approximately two meters from the motion sensor. The walker will walk slowly toward the motion sensor at a constant rate for five seconds. An analysis of the data with a linear regression curve can be performed within the EasyData app.