Design thinking, or human-centered design, is a successful method for solving complex product development and business problems, but smaller firms rarely have in-house design strategists or funds to hire external experts to make use of this approach. In Denise Ramzy’s course, students serve as business design consultants for client-partners whose work aligns with themes of the Dyson School’s Grand Challenges program, including food choice and human health, climate change and green businesses. Students practice the key techniques of design thinking: ethnographic research techniques, visioning workshops, collaborative work in multidisciplinary teams, and visualization and storytelling methods. The students’ work generates tested concepts that clients can use internally and within their communities.