Marshmallow Launch at the White House Science Fair
February 07, 2012 | 3:01
The President meets an 8th grader named Joey from Phoenix, AZ at the White House Science Fair and the two launch a marshmallow across the state dining room with Joey's science project - an air cannon.
Download mp4 (72MB) | ()
|
September 13, 2014
|
September 12, 2014
|
September 12, 2014
|
September 11, 2014
|
|
September 11, 2014
|
September 11, 2014
|
September 11, 2014
|
September 10, 2014
|
- &lsaquo previous
- …
- 197
- 198
- 199
- 200
- 201
- 202
- 203
- 204
- 205
- …
- next &rsaquo