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) | ()
|
March 30, 2015
|
March 28, 2015
|
March 27, 2015
|
March 27, 2015
|
|
March 27, 2015
|
March 26, 2015
|
March 26, 2015
|
March 26, 2015
|
- &lsaquo previous
- …
- 146
- 147
- 148
- 149
- 150
- 151
- 152
- 153
- 154
- …
- next &rsaquo