On February 7th, President Obama hosted the second White House Science Fair. 100 students from 30 teams showed their projects in various rooms in the White House.
The President viewed some of the displays and talked with students about their work, then spoke to all the students and teachers in the East Room.
After viewing the project of a Joey, from Phoenix, Arizona, President Obama wanted to see a demonstration of his air-powered marshmallow launcher, and he and the student, pumped up the gun and launched a marshmallow across the State Dining room.
What a cool president.
You can check out the White House Blog entry for this event here.