Potential Special Olympians have until Friday to register for a Winter Games basketball team through the town Parks and Recreation Department’s online system. There are later deadlines for other sports. The activities available include junior basketball, unified basketball, traditional basketball, bowling, and skiing. Special-needs athletes who take part will be eligible to compete in the Special Olympics Massachusetts Winter Games in March. All teams are open to Shrewsbury residents with intellectual disabilities. Some teams may allow athletes as young as 6 to play in practice matches, but participants in competitions must be at least 8. The junior basketball program (ages 8 to 15) plays on Tuesdays from 6 to 7 p.m. at the Coolidge School. Junior athletes turning 16 during the basketball season may remain on the junior team. The unified/traditional basketball program (ages 16 and up) plays on Tuesdays from 6:15 to 7:15 p.m. in the Sherwood Middle School gym. The traditional basketball program (for ages 22 and older) plays Tuesdays from 7:15 to 8:15 p.m. in the Sherwood gym. The registration deadline for bowling is Nov. 23, and the first practice is Dec. 3 from 10 to 11:30 a.m. at AMF Town & Country Bowling Center, 450 Boston Turnpike. The 10-week training session costs $8 per week, to be paid for at the bowling alley. The fee covers three strings of bowling and shoe rental for 10 weeks. The registration deadline for skiing is Nov. 30, with the first practice set for 6 to 8 p.m. Dec. 17 at Ski Ward. All skiers must have their own equipment and some prior experience. Because space is limited, returning ski team members will have first priority for registrations before the deadline. For more details and to register for the teams, go to the Parks and Recreation Department’s page on the town website, www.shrewsbury-ma.gov, and click on the Special Needs Programs link. Volunteers who wish to be partners on the teams should send an e-mail to firstname.lastname@example.org.