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 ...

Artificial intelligence systems are racing ahead, but the two questions still keep builders up at night: “Can the outputs be trusted, and is the underlying data really private?” The same tension is ...