Rebecca Raby, a second-grader at Fairview Elementary School in Auburn, demonstrates her science project to classmates Isabel Berube, center, and Echo Church during the Third Annual Fairview Science Fair on Wednesday. Raby built a water wheel and a windmill using household objects such as a Tupperware lid and a chopstick. She won the fair’s “Innovative Inventor” award. The 67 second-grade students showed off their projects that were designed to show motion and gravity and had to be made from everyday household items.

Fairview Elementary School teacher Kathy Martin has a bit of fun with second-grader Galen Libby during the Auburn school’s Third Annual Science Fair on Wednesday. Libby built a tug-of-war maze out of cardboard, which won him the fair’s “Coolest Toy” award. The science fair featured the projects of 67 second-graders using household items.