The twentieth century managed to isolate art, science, and engineering. It is time to reconcile these disciplines. I claim that design is one and, very probably, the bridge among them. Most importantly human-centered design (HCD)—the way it is defined in this book—is ready to do the job! The USA worries about the lack of interest and proficiency in science, technology, engineering, and mathematics (STEM) of its citizens, especially young people. It is time to move from STEM to STEAM, where the "A" means "arts." This chapter will present concepts and methods that can be useful to this end in the context of the design and development of tangible interactive systems (TISs).