1. Things to Do

Free and cheap fun: 5 things to do under $5 Aug. 27-Sept. 2

1 Coffee with the Curator: The free monthly talk from the Dalí Museum's education team this month turns to math professor Kathryn Pantelis of Hillsborough Community College, who will explore the relationship between mathematics and M.C. Escher's visionary patterns. Some 135 works, mostly prints, by the master illusionist are on display through Jan. 3 at the Dalí Museum. Many of Escher's works employed repeated tilings called tessellations, making it artwork that is especially well liked by mathematicians and scientists because of his use of geometric distortions. The talk at 10:30 a.m. Wednesday is free, though you have to have admission to the museum to see the Escher exhibit, $24, $22 seniors, $17 students, $10 children ages 6-12 at the Dalí Museum, 1 Dalí Blvd. (Bayshore Drive SE and Fifth Avenue SE), St. Petersburg.

2 Food trucks welcome college students: There's music and food trucks on the St. Petersburg waterfront to welcome University of South Florida St. Petersburg students Friday starting at 6 p.m. near the Port of St. Petersburg, 250 Eighth Ave. SE. Meanwhile the Museum of Science and Industry on Friday will host Food Truck Madness for its USF Week of Welcome. There will be a giant food truck rally, music, games and $5 admission to standard exhibit galleries, while students get free admission. Food prices vary. It starts at 6 p.m. at MOSI, 4801 E Fowler Ave., Tampa.

3 Free Tuesday at Glazer Museum: The hands-on museum and the Children's Board of Hillsborough County join together to bring free admission Tuesday from 2 to 7 p.m. at the Glazer Children's Museum, 110 W Gasparilla Plaza, Tampa. (813) 443-3861.

4 Toy Train and Hobby Show: Vendors and collectors will display a variety of model trains, tracks, accessories and more at this show that features a running train and videos for kids. Food will be available for purchase. Admission is $5; 12 and younger free at the Knights of Columbus Hall in Pinellas Park, 7177 58th St. N, Pinellas Park. (727) 244-1341. 9 a.m.-2 p.m. Saturday.

5 Back to School Expo and Open House: Now that the kids are back in school, find out what vendors have to offer families with back-to-school goodies and wellness information at Largo's Highland Recreation Center on Saturday. Prizes will be given away hourly, and the rec center's open house will offer free play areas, game room, walking track and fitness room activities in the gymnasium, and the pool will have a buy one get one free admission during swim session from 11 a.m. to 1 p.m. The expo runs from 10 a.m. to 2 p.m. at the recreation complex at 400 Highland Ave. NE, Largo. Free.

Sharon Kennedy Wynne, Follow @SharonKWn.