It is argued that ‘design' is an essential characteristic of engineering practice, and hence, an essential theme of engineering education. It is suggested that first-year design courses enhance commencing student motivation and retention, and introduce engineering application content and basic design experience early in the curriculum. The research literature indicates that engineering design practice is a deeply social process, with collaboration and group interactions required at almost every stage. This chapter documents the evaluation of the initial and subsequent second offerings of a first-year engineering design unit at Griffith University in Australia. The unit 1006ENG Design and Professional Skills aims to provide an introduction to engineering design and professional practice through a project-based approach to problem solving. The unit learning design incorporates student group work, and uses self-and-peer-assessment to incorporate aspects of the design process into the unit assessment and to provide a mechanism for individualization of student marks.