Maple Grove High School will be presenting Mamma Mia at 7 p.m. Friday and Saturday and 2 p.m. Sunday. Tickets are $8 for adults and $6 for students. Presale tickets are available at ticketpeak.co/maplegrove or available at the door. Those attending Saturday’s performance can dress in their best 1970s costume for a chance to win gift cards from Lake Life Cafe or the Bemus Point Golf Course and Tap House.