Teamwork has been described as a leadership-coupled professional competency in postsecondary engineering education. It has been listed among the most critical professional skills by engineering industries and professional organizations. Here, a mixed-method case study is reported, which used Visual Thinking Strategies alongside a group project in an elective honors short course. Descriptive statistics and analysis are further supported by qualitative evaluation, which suggests that lower-stakes activities that provide team-building functions can, increase teamwork skills among undergraduate engineers. Implications for planning more team-building activities into engineering coursework are discussed. Effects for team-building are highlighted because it has been shown to foster collaboration, communication, and mutual trust among team members, leading to improved productivity, creativity, and innovation.