The Silver Lake Lakers decided to take some foolish penalties at Hobomock Ice Arena on Saturday afternoon, and the Duxbury boys’ hockey team was more than happy to make them look foolish for doing so.

The Dragons scored three power-play goals to shut out the Lakers in their return to the ice after the weeklong break for school midterms.

Captains Matt Murphy, Mike Doyle and Trevor O’Brien all lit the lamp for the Dragons, who looked like a team that hadn’t played in a week early on. Duxbury out-shot and out-skated the Lakers while dominating the face-off circle from the drop of the puck, but struggled putting shots on target in the early going.

Despite Duxbury’s problems scoring, their control of the game caused Silver Lake’s composure to slip as the second period wore on. After Ryder Parkhurst was sent to the penalty box for slashing Nick Marrocco behind the play, Duxbury’s power-play unit responded with Murphy finishing a one-time off a cross-ice pass from Scott Whear.

Silver Lake sophomore Tyler Gillen was sent off later in the period for a late hit, and Doyle padded Duxbury’s lead with a wrist shot off the shoulder of Laker goalie Kyle McDonald with 5:34 left in the period.

“They’ve been working hard in practice and they really clicked today,” head coach John Blake said of his power-play unit. “The goal by Murph was a great shot and Doyle did a great job taking time and space off the half-wall to get a good shot.”

Gillen was sent off again in the third period for pulling down a Duxbury forward as he lost his edge and O’Brien took matters into his own hands by skating the puck inside the blue line and launching a wrister past Wright with 6:49 left in the game.

Silver Lake had some chances later in the third period, but Tucker Kelly made four saves before the Lakers proved to be their own worst enemies yet again. Play came to a halt after Silver Lake coach Tim Hill has to call timeout and regroup his team, which racked up three penalties in the span of 45 seconds. The infractions effectively ended the game as the Lakers had to play most of the final two minutes with the Dragons boasting a five-on-three advantage.

While Silver Lake imploded, the Dragons spent most of the game out of the box with only two penalties to nine from the Lakers.

“Today was really about discipline for us,” Blake said. “The key thing for us is that we stayed out of the box and didn’t get involved with the behind the play stuff, and that was the difference in the game.”

Despite the trouble scoring early, Blake said he was impressed with the way the Dragons maintained control of the game through all three periods coming off their weeklong hiatus.

“It’s always funny coming off exam week,” he said. “In the past, we’ve kind of been out to lunch in that first game back, and something we stressed with these guys all week long is that we’re trying to establish a team identity where we play hard and fast every game. I think we’re starting to establish that.”

The Dragons return home to The Bog on Saturday for one of their toughest three-day stretches in the schedule. Duxbury will host the Pembroke Titans on Saturday and then play a non-league game against the Hingham Harbormen on Monday.