Math Circles

Math Circles of Chicago will host free “math circles” at Morgan Park High School, 1744 W. Pryor Ave., on Mondays, from 3:45 to 5 p.m., for students in grades five to eight.

Math circles are groups of people who get together to do fun, unusual math problems outside of regular school.

Registration is required.

For more information or to register, visit the website for Math Circles of Chicago.

De La Salle

The Alumni Association of De La Salle Institute will host its 124th annual alumni banquet on Saturday, Oct. 5, at Beverly Country Club, 8700 S. Western Ave.

The evening will begin at 5 p.m. with a reception for the Golden Jubilee Class of 1969 and the Silver Jubilee Class of 1994. The all-class reception will follow at 6 p.m., with program and dinner at 7 p.m.

For more information, contact De La Salle Event Manager Carl Willingham at (312) 842-7355, ext. 146, or email willinghamc@