Ian Burke, a senior at Mt. Blue High School in Farmington, kneeling at right, explains to fifth-graders at Cascade Brook School in Farmington on Tuesday factors that affect a swinging pendulum. Burke is assisted by Dominic Sawyer, while fifth-graders Dylan Dobbie, left, Wyatt Flagg and Riley Rainville look on. (Donna M. Perry/Sun Journal)

Mt. Blue High School seniors Rebecca Harmon, kneeling, and Brianna Jackson, standing at right, show fifth-graders at Cascade Brook School in Farmington how a magnet is slowed but not stopped when it goes through an aluminum pipe Tuesday. (Donna M. Perry/Sun Journal)

Mt. Blue High School seniors Rebecca Harmon, left, and Brianna Jackson, right,  explain to fifth-graders Stephen Galkowski, Dane Cousineau and Keagan Moody at Cascade Brook School in Farmington how magnets work Tuesday. Students from Mt. Blue in Farmington shared physics projects with fifth-graders. (Donna M. Perry/Sun Journal)