The Roominate amusement park is a recent addition to the Roominate line of toys that introduces girls to both mechanical and electrical engineering. The kit includes a large number of standard Roominate parts which can be combined to construct a variety of carnival-style rides like a merry-go-round, ferris wheel, pirate swing, etc. Each of these constructions can be outfitted with a simple motor, so that it can be actuated and really "work." The electronic components (battery and motor) are easy to use, and my six-year-old daughter loves that she can plug them in and turn them on herself. It's not quite as easy to actually build the rides themselves, as they require a large number of parts to be assembled. Overall this is a fun kit, but we recommend it for older girls (at least seven years old, maybe eight), or girls who are particularly mechanically inclined at a younger age.