Get the fun rolling with the Builders 123 fix-it truck! Little mechanics can construct two cool vehicles and more with more than 30 easy-to-hold pieces. Kids can follow the simple instructions to build a crane truck or a train engine or use their creativity to construct anything they can imagine using regular and movable blocks. Include the smart Star unit and little builders can bring their projects to life with the first-ever talking building blocks. Slide one of the 15 smart blocks into the smart Star unit to learn colors, numbers and counting. Press the learning, music and fun sounds buttons for even more learning excitement. Children can also use blocks from other builders sets to create and learn even more.