A glitzy affair of changing exhibits that highlight the kiddie zeitgeist of the moment: Red Grooms, Maurice Sendak, and William Wegman’s dog art were just a few of the recent exhibit themes. Those with toddlers should go directly to the Child Development Center on the fourth floor, where kids can fingerpaint to their hearts’ delight, play with little stoves, and send rubber balls rocketing down a twisted tube from a loft to the floor (there were days when I never got past this room). Older children will want to take part in the classes and special exhibits, and since these fill up fast, it’s important that you stop by the sign-up desk right when you enter.