A computer-based design critiquing system analyzes a proposed solution and offers critiques (Robbins 1998). Critiques help designers identify problems as well as opportunities to improve their designs. Compared with human critics, todayis computer-based critiquing systems deliver feedback in quite restricted manner. Most systems provide only negative evaluations in text, whereas studio teachers critique by interpreting the studentis design, introducing new ideas, demonstrating and giving examples, and offering evaluations (Bailey 2004, Uluoglu 2000) using speech, writing, and drawing to communicate (Anthony 1991, Schön 1983). This article presents a computer-based critiquing system, Flat-pack Furniture Design Critic (FFDC). This system supports multiple delivery types and modalities, adapting the typical system architecture of constraint-based intelligent tutors (Mitrovic et al. 2007).