Can you muffle the sound of a jingle bell using a variety of Christmas-themed items? Explore your sense of hearing in this simple activity. Includes a video of Gemini astronauts playing Jingle Bells while in space in 1965. [1:22]

A fantastic resource where you can find biographies of historical figures. You can search by the person's name or by topics, such as Presidents, United States Leaders, Scientists, Inventors, Humanitarians, Explorers and Pioneers,...