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) | ()
|
December 9, 2015
|
December 9, 2015
|
December 9, 2015
|
December 9, 2015
|
|
December 7, 2015
|
December 6, 2015
|
December 6, 2015
|
December 5, 2015
|
- &lsaquo previous
- …
- 83
- 84
- 85
- 86
- 87
- 88
- 89
- 90
- 91
- …
- next &rsaquo