Designing and building robots to perform a series of increasingly complex tasks in an underwater environment is the vehicle to engage, interest, and cultivate 36 middle and high schools inlearning engineering, science and information technology. Using LEGO components and a hands-on, team-based, iterative design process, teachers and students learn how to build robotsthat must operate underwater in a three dimensional space. In building their robot to perform these tasks (proceed in straight line path across a pool, negotiate a slalom course, ascend/descendin a water column, and grab/deposit a