Ms. Parra's Lincoln School 3rd graders take part in OPEF's new hands-on pilot program, Geared Up. Here they experiment with principles of force Geared Up. Here they experiment with principles of force, motion, friction and more while building and testing a street sweeper, flywheeler and fishing rod. Click here or on the photo above to see pictures from Lincoln by Jessica Parra and Rachael Snodgrass.