President Susan J. Hockfield holds an Apple iPad, used for its touch interface to sign a renewal of MIT’s charter, flanked (from left) by Chairman of the MIT Corporation John S. Reed ’61 and former Presidents Paul E. Gray ’54 and Charles M. Vest at the MIT Next Century Convocation this past Sunday at the Boston Convention and Exhibition Center. See page 9 for more photos of the convocation.

Former Chancellor Phillip L. Clay PhD ’75 speaks at the MIT Next Century Convocation.

Children learn the inner workings of a joystick-controlled robotic manipulator during a technology demonstration at the Stata Center during MIT’s Under The Dome open house celebration on Saturday afternoon. Approximately 20,000 attendees visited campus for the first open house in over 30 years, part of MIT’s 150th anniversary celebrations. For more photos of Under The Dome, see p. 11.

An artist directed the painting of a mural on the sidewalk near the corner of Ames Street and Main Street outside the newly-opened Koch Institute on Friday afternoon.

Children curiously watch a soccer-playing robot demonstration at the Stata Center on Saturday afternoon.

A team from the Research Laboratory of Electronics helped open house guests build a simple DC motor using insulated copper wire and ferromagnets in the Stata Center Saturday afternoon.

An Army UH 60 Black Hawk helicopter visited Briggs Field Saturday afternoon for an inspection by MIT’s Army ROTC.

At noon on Saturday, an organized “flash mob” convened in Lobby 7, singing and dancing to a selection of pop and dance music. The flash mob required advance sign-up and rehearsal attendance.