Maybe next time: Ronan Caine, 9, left, and Duncan Sullivan, 10, kneeling at right, react as their robot car’s tire exceeds the taped boundary on the demonstration course Monday at the Mobius Science Center’s Enter the Robopocalypse class. From left, Ben Asbury, 11, Tessa Neumann, 10, Mason Leisenring, 10, and Dominick Macauley, 9, watch the action. Students programmed the robots to stay inside the taped area. The robot succeeded on the next try. Twenty third- through fifth-graders are participating in the two-day class during spring break. For other spring break camps and events, go to www.spokesman.com/stories/2013/mar/28/family-calendar.