Poole, Roger Kay2014-12-152014-12-1519331933b14725587https://archive.org/details/studyofvariation00poolhttps://hdl.handle.net/2144/10131Thesis (M.A.)--Boston Universityen-USBased on investigation of the BU Libraries' staff, this work is free of known copyright restrictions.Study of the variations in type and frequency of written problems in two unknowns as evidenced by an analysis of several standard algebra textbooks.Thesis/Dissertation