K'NEX STEM Computer Control Set - 699 Pieces, Build and Control 5 K'NEX Models (one at a time)Dynamic STEM set challenges students to build and control K'NEX models using the K'NEX Computer Control interface. Students write programs to control on screen K'NEX models using the software included, then download them into the interface's memory and use them to operate student built K'NEX models. Build 5 K'NEX models, one at a time. Models are fully functioning replicas of real world machines and include a Sliding Door, Elevator, Opening Bridge,