The "Next Generation Science Standards" framework outlines scientific and engineering practices as a key element of student development. Educators are just beginning to discover effective and meaningful ways to teach science content to students with intellectual disability; however, the literature on teaching science practices is still limited and engineering practices nonexistent. This study utilized a quasi-experimental group design to investigate the impact of universally designed engineering curriculum on 43 students with intellectual disability and autism display of engineering habits of mind (e.g., persist and learn from failure) during ongoing "Engineering is Elementary" design challenges. A statistically significant difference between the control and treatment groups was found. Findings suggest engineering instruction may support student development of problem-solving skills.