The beach at Silver Lake will open for the season Saturday, with lifeguards on duty daily from 10 a.m. to 6 p.m. Stickers for beach parking are free to residents. The Hockomock Area YMCA will offer swim lessons at the lake for children ages 3 to 12 starting June 23. The fee is $90 for twice-weekly sessions for nine weeks. Lessons are 30 minutes long and held Mondays and Wednesdays or Tuesdays and Thursdays in morning and evening sessions depending on participants’ ages. To register, e-mail aquatics program coordinator Heather Plumb at email@example.com.