Physical computing education has the ability to integrate computing into a variety of domains expanding the possibilities to engage students in personally valuable educational experiences with computing. However, it is difficult to create these personally valuable experiences to accommodate the diversity of students in a learning environment. Kayla will discuss her work integrating meta-design processes into physical computing education to scaffold students to reflect on their values and integrate them into their learning experiences. Through this work she has begun to explore the design space of hardware tools to improve the ability for students to learn about the electronics. She will present her spectrum of modularity, which serves to identify design decisions in the hardware tools that affect the affordances of the tool to support learning.