First lady Michelle Obama dances with students at Alice Deal...

First lady Michelle Obama dances with students at Alice Deal Middle School in northwest Washington during a surprise visit. (May 3, 2011) Credit: AP

First lady Michelle Obama surprised students at Alice Deal Middle School in northwest Washington Tuesday during the school's Let's Move! event.

More than 600 schools worldwide signed up to perform the NAB Education Foundation's "’Let’s Move! Flash Workout" featuring Beyoncé.  

The pre-choreographed dance routine was performed to Beyoncé's song titled "Move Your Body." The "Let’s Move!" Flash Workout supports Obama’s initiative aimed at curbing childhood obesity.
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