A survey of the use of manipulative devices by teachers of arithmetic in grades four, five, and six in selected sections of Massachusetts.

Priestley, Eleanor Mary2014-11-102014-11-1019531953b14685085https://hdl.handle.net/2144/9504Thesis (Ed.M.)--Boston Universityen-USBased on investigation of the BU Libraries' staff, this work is free of known copyright restrictions.A survey of the use of manipulative devices by teachers of arithmetic in grades four, five, and six in selected sections of Massachusetts.Thesis/Dissertation