The Hood River Middle School engineering students — aka Gravity Gremlins — are putting math and physics to use Saturday in the first Gorge Gravity Games, 10 a.m. to 4 p.m. on Court Street in The Dalles. The team refurbished a soap box car donated by Google and is fine-tuning the design this week. With the shell are Nathan McAllister, left, and Andrew McCarthy. In back are: left, Zach Moore, Henry Barton, teacher Andy Angstrom, Kevin Torres, Casey Holzman, Callie Crumpacker and Ramón Garcia Rivas. Not pictured: driver Matthew McCravey and Danielle Connelly.