At Explora!, the city’s hands-on, not-just-for-kids museum, children and adults push, pull, twist, turn and build things. With almost no instructions, we watch and then do, creating eight-inch bubbles from Frisbee-size wands. We help Scott, a fourth grader, construct a Rube Goldberg-like chain reaction machine by setting the ramps that lead the golf ball down a track that flips a seesaw that topples a block. The museum’s so popular it had to create an adults-only night to stop some parents from pushing kids out of the way in order to play, too. On Mondays the museum opens an hour early for kids ages four and younger. Often the facility has special stories and activities.