@book{173344, author = {Kadupitiya, Jayanath Chamindu Sandanuwan and Dr. Surangika Ranathunga}, title = {Assessment and error identification of answers to mathematical word problems}, year = {[2017]}, note = {TH3329 Senate Research Grant And the DL4D Grant.I}, url = {http://dl.lib.mrt.ac.lk/handle/123/12946} }