Megan Yamoah, a former Tech Trek attendee, teaches this year's participants about pneumatics in robotics. Wayne Tilcock/Enterprise photo
Sithmi Jayasundara, center, a Davis junior high school student, listens intently as Jasmine Zhou of the Citrus Circuits robotics team explains a concept during this year's Tech Trek at UC Davis. Wayne Tilcock/Enterprise photo
Davis junior high school student Rebecca Wittman, center, and fellow Tech Trekkers Julia Buteau, left, and Maddy Kreiss listen to Kelly Ostrom explain how a computer algorithm would sort numbers. Ostrom is a member of the Citrus Circuits robotics team in Davis. Wayne Tilcock/Enterprise photo

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