Prince Rupert of the Rhine first asked this question in the 17th century, and he soon found out the answer is yes. Later, ...

Can you drill a hole in a cube that an identical cube could fall through? Prince Rupert of the Rhine first asked this ...

This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more information, visit the Smithsonian's ...

So far in the unit on area in the series on measurement, Daniel has been looking at the area of plane 2-dimensional or flat shapes. In this movie, Daniel extends our understanding of area to ...