Resumen de Innovative Interactive Lecture Demonstrations Using Wireless Force Sensors and Accelerometers for Introductory Physics Courses
Interactive lecture demonstrations1�6ILDs are a powerful tool designed to help instructors bring stateoftheart teaching pedagogies into the collegelevel introductory physics classroom. ILDs have been shown to improve students conceptual understanding, and many examples have been created and published by Sokoloff and Thornton.6We have used the new technology of Verniers Wireless Dynamics Sensor System WDSS7to develop three new ILDs for the firstsemester introductory physics calculusbased or algebrabased classroom. These three are the Force Board, to demonstrate the vector nature of forces, addition of vectors, and the first condition of equilibrium; the Torque Board, to demonstrate torque and the second condition for equilibrium; and the Circular Motion Board, to discover the nature of the acceleration an object exhibiting uniform circular motion. With the WDSS, all three of these ILDs are easy to set up and use in any classroom or laboratory situation, and allow more instructors to utilize the technique of interactive lecture demonstrations.
