Vernier Go! Motion is a motion-detection device that plugs into the USB port of any desktop computer and can measure the position (distance) of an object in relation to the sensor, as well as the object’s velocity as it moves. A free software program that accompanies the device can show these data in real time in either a table or a graph. Physics teachers can use the device to teach concepts around incline, slope, acceleration, and more. Go! Motion costs $99, and an adapter is available for an additional cost if you want to use the device with a calculator instead of a computer.