You might never stop building once you get your hands on the 50-model building set from K'NEX. This super value set includes pieces to build over 50 moving machines, creatures, and rides, plus a bonus battery-powered motor to set the models in motion. A 225-page instruction manual features step-by-step instructions for three levels of building: friendly, moderate, and greater, depending on your childs age and skill level. The color-coded rod-and-connector system and visual instructions make construction simple while teaching hand-eye coordination and planning skills, as kids build everything from a sea turtle to a racing car. The set's sturdy components can also be combined creatively to form unique original structures and designs, and are compatible with other K'NEX systems. When it's time to put them away, all the pieces fit nicely into the 17-by-12-by-6-inch blue plastic box with handle. Requires two AA batteries (not included) to operate the motor. --N. Mered
With the K'Nex 50 Model Building Set your child can build more than 50 machines, creatures, rides, and more, and watch them come to life. The bonus motor will set your models in motion. Kids will learn hand-eye coordination and planning skills as they follow the instruction booklet that includes step-by-step instructions for an array of creations. Or they can test their creativity by building their own models. Booklet includes 3 building levels depending on your child's age and skill level. Color-coded rod-and-connector system makes building easy and fun. When it's time for a break, all pieces fit into the sturdy blue plastic carrying case. 481 pieces.