At Brighton School, in Lynnwood, Washington, 2nd Grade Students in Mrs. Figel's class connected Arduino boards to motion sensors to track the progress of the Grinch coming down his mountain to return presents. As the Grinch approached, they programmed the Arduino microcontrollers to turn on a snow fan, spinning Christmas trees, village lights and even a chocolate fountain. This video shows the process and the final STEM Storybook event.