We believe that, on their own, Universal Design for Learning and Design Thinking are valuable ideas and can be used powerfully by teachers to reshape experiences and outcomes for students. Yet, in our view, they are even more powerful when used together. We have seen that when teachers are well-versed in the principles of Universal Design for Learning and the process of Design Thinking, more accessible designs for curriculum, routines, tools and spaces can result. So, our work is to study this intersection of UDL and Design Thinking and to understand the impacts for both teachers and students alike, particularly within K-12 STEM.