In an introductory physics course where students first learn about vectors, they oftentimes struggle with the concept of vector addition and decomposition. For example, the classic physics problem involving a mass on an inclined plane requires the decomposition of the force of gravity into two directions that are parallel and perpendicular to the ramp. It takes time and effort for the students to become proficient with such a vector decomposition process. Here, we present simple lab experiments to help students learn and practice the vector concepts, by working with a familiar low-cost accelerometer, the Wii Remote ("Wiimote"). (Contains 3 figures.)