Rose Elementary School's 4th through 6th grade GATE class showcased their mock catapult made of popsicle sticks that was used for designing a full size catapult. which will be used during the San Jose Tech Museum's Tech Challenge, as Andy Vu, 11, watches during the MUSD Student Technology Showcase at Milpitas High School in Milpitas, California, on March 2, 2013. (Stan Olszewski/SOSKIphoto)
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