LIVERMORE -- Tri-Valley elementary and middle school-age students will get hands-on experience with building robots, and learning a thing or two about science and math, at a Lego League competition Sunday.

The event is hosted by Robot Garden, a "hackerspace" of Tri-Valley parents, kids and educators with an interest in robotics, the iGATE Innovation Hub, and Innovation Tri-Valley.

The free event will run from 9 a.m. to 5 p.m. at the iGATE NEST, 7693 Longard Road.

Sixteen local teams will compete.

The FIRST Lego League is an international competition designed to develop interest in science, technology, engineering and math for children ages 9-14. The competition involves designing and programming robots to complete real world tasks, with a different theme each season. The theme for 2012 is "Senior Solutions," using robots to improve the way of life of senior citizens.

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