photo by Inga Simitz

Ms. Turi’s Holmes 3rd graders had a great time building and testing fixed pulleys, movable pulleys, and block and tackle. It was part of OPEF’s Geared Up program, in which all District 97 3rd graders build with LEGO Mechanisms kits, building and testing machines in teams of two to learn about gears, pulleys, levers, friction, mass and more.

See more photos from the program by Inga Simitz here.