Project explaining this article consists of moment of inertia of a disc and a ring using an accelerometer measurements. This experimental process enables students to understand that to solve a problem you can search multiple paths and work with the most appropriate, since this expe riment has been taking as variable time, this way means the multiple options presented a scientific problem is. Also the student you will notice this i nstrument compared with the manual stopwatch measurement accuracy. It will also allow students easily understand the phenomenon of inertia to interact wi th the experiment may land and internalize the notion.