Dress up your little goblins for the Monsters on the Meadows Halloween Festival at the Meadows of Lake Saint Louis. There will be free pumpkin painting, trick or treating, face painting, giveaways and lots more.
11 a.m. to 2 p.m. Free and open to everyone.
More information: themeadowsatlsl.com
Engage your young scientist in science-related learning at the Saint Louis Science Center's Preschool Science Series. Through interactive stories and hands-on exploration, children learn about science, as well as language, problem-solving and social skills.