He teaches African, World, and Middle Eastern History, as well as courses on Historical Method. He also serves as advisor to the International Student Union and the Phi Alpha Theta History honor society. He and co-author Erik Gilbert recently published Africa in World History: From Prehistory to the Present (Prentice Hall, 2004). Reynolds has also authored The Time of Politics (Zamanin Siyasa): Islam and the Politics of Legitimacy in Northern Nigeria, 1950–1966 (UPA, 2001) and several articles on "Africa in World History" and Islam and Politics in West Africa.