Tech Machines Set for Problem Solving and Fine Motor Skills by LEGO Education DUPLO 95-piece LEGO Education DUPLO tech machines set Includes the components to assemble four construction vehicles, a crane, and a wind turbine as well as other construction-scene accessories and figures to learn about machines and their functions Integrated screws on building components click into place with four screwdrivers for hands-on experience with tools and assembly Includes an activity pack with building-inspiration cards and problem-solving task list Supports a group of four students, ages three years and older