Over the past few decades, breakthroughs in DIY (do it yourself) methods, low-cost technologies, and social media platforms have enabled people to participate in science in new and unexpected ways. This course will examine the technological, material, and social factors that expand science practice beyond professional settings. We will engage with initiatives ranging from low-cost environmental monitoring and quotidian food science, to grassroots efforts that communicate professional research to policy makers or members of the general public, as well as science-tinkering practices in art studios, garages, and hackspaces. Students will apply theoretical concepts and grounded fieldwork methods to the design of systems that scaffold expertise and support public participation in science.