Bob has been working with math circles since 2012. A past director of the Navajo Nation Math Circles project, Bob has worked with students, teachers, parents, community members, and educational leadership on engaging mathematics, rural education, and community collaboration. Bob is proud to be an adopted member of the Navajo Tribal clan, Todích’íí’nii (Bitter Water). He has worked with indigenous peoples from around the world in the U.S., México, Guatemala, Panamá, and Nepal. He resides in Athens, Ohio, USA. Bob is also a 2019-20 Fellow of the American Council on Education. email: aimathcircles@gmail.com