Southwestern Michigan College’s summer STEM camps have been proving popular this year. In fact, they’re so popular, they’re full. SMC says the camps for fourth graders are all about teaching science, technology, engineering, and math in a way that will be fun for kids. Last summer, participants rotated from the William P.D. O’Leary Building chemistry lab — where they concocted colorful slime from baking soda, glue, contact solution, glitter, and food coloring — to the Barbara Wood Building computer lab to learn about 3D printing and drones. This summer’s camps have 80 students per day, with 24 on a waitlist. Each camp is just one day, set for August 6, 7, and 8.